Merge branch 'master' of github.com:rosenbjerg/FFMpegCore

.github/workflows/ci.yml

@@ -18,12 +18,12 @@ jobs:
     timeout-minutes: 6
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
     - name: Prepare .NET
       uses: actions/setup-dotnet@v1
       with:
         dotnet-version: '5.0.x'
     - name: Prepare FFMpeg
-      uses: FedericoCarboni/setup-ffmpeg@v1-beta
+      uses: FedericoCarboni/setup-ffmpeg@v1
     - name: Test with dotnet
       run: dotnet test --logger GitHubActions

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
     - name: Prepare .NET
       uses: actions/setup-dotnet@v1
       with:

FFMpegCore.Examples/FFMpegCore.Examples.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net5.0</TargetFramework>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\FFMpegCore\FFMpegCore.csproj" />
+    </ItemGroup>
+
+</Project>

FFMpegCore.Examples/Program.cs

@@ -0,0 +1,124 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using FFMpegCore;
+using FFMpegCore.Enums;
+using FFMpegCore.Pipes;
+using FFMpegCore.Extend;
+
+var inputPath = "/path/to/input";
+var outputPath = "/path/to/output";
+
+{
+    var mediaInfo = FFProbe.Analyse(inputPath);
+}
+
+{
+    var mediaInfo = await FFProbe.AnalyseAsync(inputPath);
+}
+
+{
+    FFMpegArguments
+        .FromFileInput(inputPath)
+        .OutputToFile(outputPath, false, options => options
+            .WithVideoCodec(VideoCodec.LibX264)
+            .WithConstantRateFactor(21)
+            .WithAudioCodec(AudioCodec.Aac)
+            .WithVariableBitrate(4)
+            .WithVideoFilters(filterOptions => filterOptions
+                .Scale(VideoSize.Hd))
+            .WithFastStart())
+        .ProcessSynchronously();
+}
+
+{
+    // process the snapshot in-memory and use the Bitmap directly
+    var bitmap = FFMpeg.Snapshot(inputPath, new Size(200, 400), TimeSpan.FromMinutes(1));
+
+    // or persists the image on the drive
+    FFMpeg.Snapshot(inputPath, outputPath, new Size(200, 400), TimeSpan.FromMinutes(1));
+}
+
+var inputStream = new MemoryStream();
+var outputStream = new MemoryStream();
+
+{
+    await FFMpegArguments
+        .FromPipeInput(new StreamPipeSource(inputStream))
+        .OutputToPipe(new StreamPipeSink(outputStream), options => options
+            .WithVideoCodec("vp9")
+            .ForceFormat("webm"))
+        .ProcessAsynchronously();
+}
+
+{
+    FFMpeg.Join(@"..\joined_video.mp4",
+        @"..\part1.mp4",
+        @"..\part2.mp4",
+        @"..\part3.mp4"
+    );
+}
+
+{
+    FFMpeg.JoinImageSequence(@"..\joined_video.mp4", frameRate: 1,
+        ImageInfo.FromPath(@"..\1.png"),
+        ImageInfo.FromPath(@"..\2.png"),
+        ImageInfo.FromPath(@"..\3.png")
+    );
+}
+
+{
+    FFMpeg.Mute(inputPath, outputPath);
+}
+
+{
+    FFMpeg.ExtractAudio(inputPath, outputPath);
+}
+
+var inputAudioPath = "/path/to/input/audio";
+{
+    FFMpeg.ReplaceAudio(inputPath, inputAudioPath, outputPath);
+}
+
+var inputImagePath = "/path/to/input/image";
+{
+    FFMpeg.PosterWithAudio(inputPath, inputAudioPath, outputPath);
+    // or
+    var image = Image.FromFile(inputImagePath);
+    image.AddAudio(inputAudioPath, outputPath);
+}
+
+IVideoFrame GetNextFrame() => throw new NotImplementedException();
+{
+    IEnumerable<IVideoFrame> CreateFrames(int count)
+    {
+        for(int i = 0; i < count; i++)
+        {
+            yield return GetNextFrame(); //method of generating new frames
+        }
+    }
+    
+    var videoFramesSource = new RawVideoPipeSource(CreateFrames(64)) //pass IEnumerable<IVideoFrame> or IEnumerator<IVideoFrame> to constructor of RawVideoPipeSource
+    {
+        FrameRate = 30 //set source frame rate
+    };
+    await FFMpegArguments
+        .FromPipeInput(videoFramesSource)
+        .OutputToFile(outputPath, false, options => options
+            .WithVideoCodec(VideoCodec.LibVpx))
+        .ProcessAsynchronously();
+}
+
+{
+    // setting global options
+    GlobalFFOptions.Configure(new FFOptions { BinaryFolder = "./bin", TemporaryFilesFolder = "/tmp" });
+    // or
+    GlobalFFOptions.Configure(options => options.BinaryFolder = "./bin");
+    
+    // or individual, per-run options
+    await FFMpegArguments
+        .FromFileInput(inputPath)
+        .OutputToFile(outputPath)
+        .ProcessAsynchronously(true, new FFOptions { BinaryFolder = "./bin", TemporaryFilesFolder = "/tmp" });
+}

FFMpegCore.Test/ArgumentBuilderTest.cs

@@ -8,7 +8,7 @@ namespace FFMpegCore.Test
     [TestClass]
     public class ArgumentBuilderTest
     {
-        private readonly string[] _concatFiles = { "1.mp4", "2.mp4", "3.mp4", "4.mp4"};
+        private readonly string[] _concatFiles = { "1.mp4", "2.mp4", "3.mp4", "4.mp4" };
 
 
         [TestMethod]
@@ -21,28 +21,35 @@ public void Builder_BuildString_IO_1()
         [TestMethod]
         public void Builder_BuildString_Scale()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", true, opt => opt.Scale(VideoSize.Hd)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
-            Assert.AreEqual("-i \"input.mp4\" -vf scale=-1:720 \"output.mp4\" -y", str);
+                .OutputToFile("output.mp4", true, opt => opt
+                    .WithVideoFilters(filterOptions => filterOptions
+                        .Scale(VideoSize.Hd)))
+                .Arguments;
+            Assert.AreEqual("-i \"input.mp4\" -vf \"scale=-1:720\" \"output.mp4\" -y", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_AudioCodec()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", true, opt => opt.WithAudioCodec(AudioCodec.Aac)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", true, opt => opt.WithAudioCodec(AudioCodec.Aac)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c:a aac \"output.mp4\" -y", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_AudioBitrate()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", true, opt => opt.WithAudioBitrate(AudioQuality.Normal)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", true, opt => opt.WithAudioBitrate(AudioQuality.Normal)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -b:a 128k \"output.mp4\" -y", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_Quiet()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").WithGlobalOptions(opt => opt.WithVerbosityLevel()).OutputToFile("output.mp4", false).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4").WithGlobalOptions(opt => opt.WithVerbosityLevel())
+                .OutputToFile("output.mp4", false).Arguments;
             Assert.AreEqual("-hide_banner -loglevel error -i \"input.mp4\" \"output.mp4\"", str);
         }
 
@@ -50,27 +57,32 @@ public void Builder_BuildString_Quiet()
         [TestMethod]
         public void Builder_BuildString_AudioCodec_Fluent()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithAudioCodec(AudioCodec.Aac).WithAudioBitrate(128)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false,
+                opt => opt.WithAudioCodec(AudioCodec.Aac).WithAudioBitrate(128)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c:a aac -b:a 128k \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_BitStream()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithBitStreamFilter(Channel.Audio, Filter.H264_Mp4ToAnnexB)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false,
+                opt => opt.WithBitStreamFilter(Channel.Audio, Filter.H264_Mp4ToAnnexB)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -bsf:a h264_mp4toannexb \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_HardwareAcceleration_Auto()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithHardwareAcceleration()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithHardwareAcceleration()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -hwaccel \"output.mp4\"", str);
         }
+
         [TestMethod]
         public void Builder_BuildString_HardwareAcceleration_Specific()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithHardwareAcceleration(HardwareAccelerationDevice.CUVID)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false,
+                opt => opt.WithHardwareAcceleration(HardwareAccelerationDevice.CUVID)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -hwaccel cuvid \"output.mp4\"", str);
         }
 
@@ -84,98 +96,138 @@ public void Builder_BuildString_Concat()
         [TestMethod]
         public void Builder_BuildString_Copy_Audio()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.CopyChannel(Channel.Audio)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.CopyChannel(Channel.Audio)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c:a copy \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Copy_Video()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.CopyChannel(Channel.Video)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.CopyChannel(Channel.Video)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c:v copy \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Copy_Both()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.CopyChannel()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.CopyChannel()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c copy \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_DisableChannel_Audio()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.DisableChannel(Channel.Audio)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.DisableChannel(Channel.Audio)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -an \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_DisableChannel_Video()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.DisableChannel(Channel.Video)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.DisableChannel(Channel.Video)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -vn \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_AudioSamplingRate_Default()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithAudioSamplingRate()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithAudioSamplingRate()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -ar 48000 \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_AudioSamplingRate()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithAudioSamplingRate(44000)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithAudioSamplingRate(44000)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -ar 44000 \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_VariableBitrate()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithVariableBitrate(5)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithVariableBitrate(5)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -vbr 5 \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_Faststart()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithFastStart()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithFastStart()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -movflags faststart \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_Overwrite()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.OverwriteExisting()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.OverwriteExisting()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -y \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_RemoveMetadata()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithoutMetadata()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithoutMetadata()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -map_metadata -1 \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_Transpose()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.Transpose(Transposition.CounterClockwise90)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt
+                    .WithVideoFilters(filterOptions => filterOptions
+                        .Transpose(Transposition.CounterClockwise90)))
+                .Arguments;
             Assert.AreEqual("-i \"input.mp4\" -vf \"transpose=2\" \"output.mp4\"", str);
         }
 
+        [TestMethod]
+        public void Builder_BuildString_Mirroring()
+        {
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt
+                    .WithVideoFilters(filterOptions => filterOptions
+                        .Mirror(Mirroring.Horizontal)))
+                .Arguments;
+            Assert.AreEqual("-i \"input.mp4\" -vf \"hflip\" \"output.mp4\"", str);
+        }
+
+        [TestMethod]
+        public void Builder_BuildString_TransposeScale()
+        {
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt
+                    .WithVideoFilters(filterOptions => filterOptions
+                        .Transpose(Transposition.CounterClockwise90)
+                        .Scale(200, 300)))
+                .Arguments;
+            Assert.AreEqual("-i \"input.mp4\" -vf \"transpose=2, scale=200:300\" \"output.mp4\"", str);
+        }
+
         [TestMethod]
         public void Builder_BuildString_ForceFormat()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4", false, opt => opt.ForceFormat(VideoType.Mp4)).OutputToFile("output.mp4", false, opt => opt.ForceFormat(VideoType.Mp4)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4", false, opt => opt.ForceFormat(VideoType.Mp4))
+                .OutputToFile("output.mp4", false, opt => opt.ForceFormat(VideoType.Mp4)).Arguments;
             Assert.AreEqual("-f mp4 -i \"input.mp4\" -f mp4 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_FrameOutputCount()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithFrameOutputCount(50)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithFrameOutputCount(50)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -vframes 50 \"output.mp4\"", str);
         }
 
@@ -189,14 +241,16 @@ public void Builder_BuildString_VideoStreamNumber()
         [TestMethod]
         public void Builder_BuildString_FrameRate()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithFramerate(50)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithFramerate(50)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -r 50 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Loop()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.Loop(50)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.Loop(50))
+                .Arguments;
             Assert.AreEqual("-i \"input.mp4\" -loop 50 \"output.mp4\"", str);
         }
 
@@ -204,27 +258,30 @@ public void Builder_BuildString_Loop()
         public void Builder_BuildString_Seek()
         {
             var str = FFMpegArguments.FromFileInput("input.mp4", false, opt => opt.Seek(TimeSpan.FromSeconds(10))).OutputToFile("output.mp4", false, opt => opt.Seek(TimeSpan.FromSeconds(10))).Arguments;
-            Assert.AreEqual("-ss 00:00:10 -i \"input.mp4\" -ss 00:00:10 \"output.mp4\"", str);
+            Assert.AreEqual("-ss 00:00:10.000 -i \"input.mp4\" -ss 00:00:10.000 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Shortest()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.UsingShortest()).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.UsingShortest()).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -shortest \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Size()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.Resize(1920, 1080)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.Resize(1920, 1080)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -s 1920x1080 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Speed()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithSpeedPreset(Speed.Fast)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithSpeedPreset(Speed.Fast)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -preset fast \"output.mp4\"", str);
         }
 
@@ -234,18 +291,21 @@ public void Builder_BuildString_DrawtextFilter()
             var str = FFMpegArguments
                 .FromFileInput("input.mp4")
                 .OutputToFile("output.mp4", false, opt => opt
-                    .DrawText(DrawTextOptions
+                    .WithVideoFilters(filterOptions => filterOptions
-                        .Create("Stack Overflow", "/path/to/font.ttf")
+                        .DrawText(DrawTextOptions
-                        .WithParameter("fontcolor", "white")
+                            .Create("Stack Overflow", "/path/to/font.ttf")
-                        .WithParameter("fontsize", "24")
+                            .WithParameter("fontcolor", "white")
-                        .WithParameter("box", "1")
+                            .WithParameter("fontsize", "24")
-                        .WithParameter("boxcolor", "black@0.5")
+                            .WithParameter("box", "1")
-                        .WithParameter("boxborderw", "5")
+                            .WithParameter("boxcolor", "black@0.5")
-                        .WithParameter("x", "(w-text_w)/2")
+                            .WithParameter("boxborderw", "5")
-                        .WithParameter("y", "(h-text_h)/2")))
+                            .WithParameter("x", "(w-text_w)/2")
+                            .WithParameter("y", "(h-text_h)/2"))))
                 .Arguments;
 
-            Assert.AreEqual("-i \"input.mp4\" -vf drawtext=\"text='Stack Overflow':fontfile=/path/to/font.ttf:fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2\" \"output.mp4\"", str);
+            Assert.AreEqual(
+                "-i \"input.mp4\" -vf \"drawtext=text='Stack Overflow':fontfile=/path/to/font.ttf:fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2\" \"output.mp4\"",
+                str);
         }
 
         [TestMethod]
@@ -254,45 +314,53 @@ public void Builder_BuildString_DrawtextFilter_Alt()
             var str = FFMpegArguments
                 .FromFileInput("input.mp4")
                 .OutputToFile("output.mp4", false, opt => opt
-                    .DrawText(DrawTextOptions
+                    .WithVideoFilters(filterOptions => filterOptions
-                        .Create("Stack Overflow", "/path/to/font.ttf", ("fontcolor", "white"), ("fontsize", "24"))))
+                        .DrawText(DrawTextOptions
+                            .Create("Stack Overflow", "/path/to/font.ttf", ("fontcolor", "white"), ("fontsize", "24")))))
                 .Arguments;
 
-            Assert.AreEqual("-i \"input.mp4\" -vf drawtext=\"text='Stack Overflow':fontfile=/path/to/font.ttf:fontcolor=white:fontsize=24\" \"output.mp4\"", str);
+            Assert.AreEqual(
+                "-i \"input.mp4\" -vf \"drawtext=text='Stack Overflow':fontfile=/path/to/font.ttf:fontcolor=white:fontsize=24\" \"output.mp4\"",
+                str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_StartNumber()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithStartNumber(50)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithStartNumber(50)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -start_number 50 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Threads_1()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.UsingThreads(50)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.UsingThreads(50)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -threads 50 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Threads_2()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.UsingMultithreading(true)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.UsingMultithreading(true)).Arguments;
             Assert.AreEqual($"-i \"input.mp4\" -threads {Environment.ProcessorCount} \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Codec()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithVideoCodec(VideoCodec.LibX264)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithVideoCodec(VideoCodec.LibX264)).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c:v libx264 \"output.mp4\"", str);
         }
 
         [TestMethod]
         public void Builder_BuildString_Codec_Override()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", true, opt => opt.WithVideoCodec(VideoCodec.LibX264).ForcePixelFormat("yuv420p")).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", true,
+                opt => opt.WithVideoCodec(VideoCodec.LibX264).ForcePixelFormat("yuv420p")).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -c:v libx264 -pix_fmt yuv420p \"output.mp4\" -y", str);
         }
 
@@ -300,17 +368,20 @@ public void Builder_BuildString_Codec_Override()
         [TestMethod]
         public void Builder_BuildString_Duration()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithDuration(TimeSpan.FromSeconds(20))).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithDuration(TimeSpan.FromSeconds(20))).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -t 00:00:20 \"output.mp4\"", str);
         }
-        
+
         [TestMethod]
         public void Builder_BuildString_Raw()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4", false, opt => opt.WithCustomArgument(null!)).OutputToFile("output.mp4", false, opt => opt.WithCustomArgument(null!)).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4", false, opt => opt.WithCustomArgument(null!))
+                .OutputToFile("output.mp4", false, opt => opt.WithCustomArgument(null!)).Arguments;
             Assert.AreEqual(" -i \"input.mp4\"  \"output.mp4\"", str);
 
-            str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.WithCustomArgument("-acodec copy")).Arguments;
+            str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.WithCustomArgument("-acodec copy")).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -acodec copy \"output.mp4\"", str);
         }
 
@@ -318,7 +389,8 @@ public void Builder_BuildString_Raw()
         [TestMethod]
         public void Builder_BuildString_ForcePixelFormat()
         {
-            var str = FFMpegArguments.FromFileInput("input.mp4").OutputToFile("output.mp4", false, opt => opt.ForcePixelFormat("yuv444p")).Arguments;
+            var str = FFMpegArguments.FromFileInput("input.mp4")
+                .OutputToFile("output.mp4", false, opt => opt.ForcePixelFormat("yuv444p")).Arguments;
             Assert.AreEqual("-i \"input.mp4\" -pix_fmt yuv444p \"output.mp4\"", str);
         }
     }

FFMpegCore.Test/AudioTest.cs

@@ -1,11 +1,13 @@
-using System;
+using FFMpegCore.Enums;
-using FFMpegCore.Enums;
+using FFMpegCore.Exceptions;
+using FFMpegCore.Pipes;
 using FFMpegCore.Test.Resources;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
-using FFMpegCore.Pipes;
 
 namespace FFMpegCore.Test
 {
@@ -70,5 +72,155 @@ public void Image_AddAudio()
             Assert.IsTrue(analysis.Duration.TotalSeconds > 0);
             Assert.IsTrue(File.Exists(outputFile));
         }
+
+        [TestMethod, Timeout(10000)]
+        public void Audio_ToAAC_Args_Pipe()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var samples = new List<IAudioSample>
+            {
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+            };
+
+            var audioSamplesSource = new RawAudioPipeSource(samples)
+            {
+                Channels = 2,
+                Format = "s8",
+                SampleRate = 8000,
+            };
+
+            var success = FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Audio_ToLibVorbis_Args_Pipe()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var samples = new List<IAudioSample>
+            {
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+            };
+
+            var audioSamplesSource = new RawAudioPipeSource(samples)
+            {
+                Channels = 2,
+                Format = "s8",
+                SampleRate = 8000,
+            };
+
+            var success = FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.LibVorbis))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public async Task Audio_ToAAC_Args_Pipe_Async()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var samples = new List<IAudioSample>
+            {
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+            };
+
+            var audioSamplesSource = new RawAudioPipeSource(samples)
+            {
+                Channels = 2,
+                Format = "s8",
+                SampleRate = 8000,
+            };
+
+            var success = await FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac))
+                .ProcessAsynchronously();
+            Assert.IsTrue(success);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Audio_ToAAC_Args_Pipe_ValidDefaultConfiguration()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var samples = new List<IAudioSample>
+            {
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+                new PcmAudioSampleWrapper(new byte[] { 0, 0 }),
+            };
+
+            var audioSamplesSource = new RawAudioPipeSource(samples);
+
+            var success = FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Audio_ToAAC_Args_Pipe_InvalidChannels()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var audioSamplesSource = new RawAudioPipeSource(new List<IAudioSample>())
+            {
+                Channels = 0,
+            };
+
+            var ex = Assert.ThrowsException<FFMpegException>(() => FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac))
+                .ProcessSynchronously());
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Audio_ToAAC_Args_Pipe_InvalidFormat()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var audioSamplesSource = new RawAudioPipeSource(new List<IAudioSample>())
+            {
+                Format = "s8le",
+            };
+
+            var ex = Assert.ThrowsException<FFMpegException>(() => FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac))
+                .ProcessSynchronously());
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Audio_ToAAC_Args_Pipe_InvalidSampleRate()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var audioSamplesSource = new RawAudioPipeSource(new List<IAudioSample>())
+            {
+                SampleRate = 0,
+            };
+
+            var ex = Assert.ThrowsException<FFMpegException>(() => FFMpegArguments
+                .FromPipeInput(audioSamplesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac))
+                .ProcessSynchronously());
+        }
     }
 }

FFMpegCore.Test/FFMpegCore.Test.csproj

@@ -39,10 +39,10 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="GitHubActionsTestLogger" Version="1.1.2" />
+    <PackageReference Include="GitHubActionsTestLogger" Version="1.2.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
-    <PackageReference Include="MSTest.TestAdapter" Version="2.1.2" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="2.1.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.1" />
   </ItemGroup>
 
   <ItemGroup>

FFMpegCore.Test/FFMpegOptionsTests.cs

@@ -10,39 +10,39 @@ public class FFMpegOptionsTest
         [TestMethod]
         public void Options_Initialized()
         {
-            Assert.IsNotNull(FFMpegOptions.Options);
+            Assert.IsNotNull(GlobalFFOptions.Current);
         }
 
         [TestMethod]
         public void Options_Defaults_Configured()
         {
-            Assert.AreEqual(new FFMpegOptions().RootDirectory, $"");
+            Assert.AreEqual(new FFOptions().BinaryFolder, $"");
         }
 
         [TestMethod]
         public void Options_Loaded_From_File()
         {
             Assert.AreEqual(
-                FFMpegOptions.Options.RootDirectory, 
+                GlobalFFOptions.Current.BinaryFolder, 
-                JsonConvert.DeserializeObject<FFMpegOptions>(File.ReadAllText("ffmpeg.config.json")).RootDirectory
+                JsonConvert.DeserializeObject<FFOptions>(File.ReadAllText("ffmpeg.config.json")).BinaryFolder
             );
         }
 
         [TestMethod]
         public void Options_Set_Programmatically()
         {
-            var original = FFMpegOptions.Options; 
+            var original = GlobalFFOptions.Current; 
             try
             {
-                FFMpegOptions.Configure(new FFMpegOptions { RootDirectory = "Whatever" });
+                GlobalFFOptions.Configure(new FFOptions { BinaryFolder = "Whatever" });
                 Assert.AreEqual(
-                    FFMpegOptions.Options.RootDirectory,
+                    GlobalFFOptions.Current.BinaryFolder,
                     "Whatever"
                 );
             }
             finally
             {
-                FFMpegOptions.Configure(original);
+                GlobalFFOptions.Configure(original);
             }
         }
     }

FFMpegCore.Test/FFProbeTests.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 using System.Threading.Tasks;
 using FFMpegCore.Test.Resources;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
@@ -23,16 +24,39 @@ public async Task Audio_FromStream_Duration()
             var streamAnalysis = await FFProbe.AnalyseAsync(inputStream);
             Assert.IsTrue(fileAnalysis.Duration == streamAnalysis.Duration);
         }
+
+        [DataTestMethod]
+        [DataRow("0:00:03.008000", 0, 0, 0, 3, 8)]
+        [DataRow("05:12:59.177", 0, 5, 12, 59, 177)]
+        [DataRow("149:07:50.911750", 6, 5, 7, 50, 911)]
+        [DataRow("00:00:00.83", 0, 0, 0, 0, 830)]
+        public void MediaAnalysis_ParseDuration(string duration, int expectedDays, int expectedHours, int expectedMinutes, int expectedSeconds, int expectedMilliseconds)
+        {
+            var ffprobeStream = new FFProbeStream { Duration = duration };
+
+            var parsedDuration = MediaAnalysisUtils.ParseDuration(ffprobeStream);
+
+            Assert.AreEqual(expectedDays, parsedDuration.Days);
+            Assert.AreEqual(expectedHours, parsedDuration.Hours);
+            Assert.AreEqual(expectedMinutes, parsedDuration.Minutes);
+            Assert.AreEqual(expectedSeconds, parsedDuration.Seconds);
+            Assert.AreEqual(expectedMilliseconds, parsedDuration.Milliseconds);
+        }
+
+        [TestMethod]
+        public async Task Uri_Duration()
+        {
+            var fileAnalysis = await FFProbe.AnalyseAsync(new Uri("https://github.com/rosenbjerg/FFMpegCore/raw/master/FFMpegCore.Test/Resources/input_3sec.webm"));
+            Assert.IsNotNull(fileAnalysis);
+        }
         
         [TestMethod]
         public void Probe_Success()
         {
             var info = FFProbe.Analyse(TestResources.Mp4Video);
             Assert.AreEqual(3, info.Duration.Seconds);
-            Assert.AreEqual(".mp4", info.Extension);
-            Assert.AreEqual(TestResources.Mp4Video, info.Path);
             
-            Assert.AreEqual("5.1", info.PrimaryAudioStream.ChannelLayout);
+            Assert.AreEqual("5.1", info.PrimaryAudioStream!.ChannelLayout);
             Assert.AreEqual(6, info.PrimaryAudioStream.Channels);
             Assert.AreEqual("AAC (Advanced Audio Coding)", info.PrimaryAudioStream.CodecLongName);
             Assert.AreEqual("aac", info.PrimaryAudioStream.CodecName);
@@ -40,7 +64,7 @@ public void Probe_Success()
             Assert.AreEqual(377351, info.PrimaryAudioStream.BitRate);
             Assert.AreEqual(48000, info.PrimaryAudioStream.SampleRateHz);
             
-            Assert.AreEqual(1471810, info.PrimaryVideoStream.BitRate);
+            Assert.AreEqual(1471810, info.PrimaryVideoStream!.BitRate);
             Assert.AreEqual(16, info.PrimaryVideoStream.DisplayAspectRatio.Width);
             Assert.AreEqual(9, info.PrimaryVideoStream.DisplayAspectRatio.Height);
             Assert.AreEqual("yuv420p", info.PrimaryVideoStream.PixelFormat);

FFMpegCore.Test/Resources/TestResources.cs

@@ -1,8 +1,4 @@
-using System;
+namespace FFMpegCore.Test.Resources
-using System.IO;
-using FFMpegCore.Enums;
-
-namespace FFMpegCore.Test.Resources
 {
     public enum AudioType
     {

FFMpegCore.Test/TasksExtensions.cs

@@ -1,10 +0,0 @@
-using System.Threading.Tasks;
-
-namespace FFMpegCore.Test
-{
-    static class TasksExtensions
-    {
-        public static T WaitForResult<T>(this Task<T> task) =>
-            task.ConfigureAwait(false).GetAwaiter().GetResult();
-    }
-}

FFMpegCore.Test/Utilities/BitmapSources.cs

@@ -21,7 +21,7 @@ public static IEnumerable<IVideoFrame> CreateBitmaps(int count, PixelFormat fmt,
             }
         }
 
-        private static BitmapVideoFrameWrapper CreateVideoFrame(int index, PixelFormat fmt, int w, int h, float scaleNoise, float offset)
+        public static BitmapVideoFrameWrapper CreateVideoFrame(int index, PixelFormat fmt, int w, int h, float scaleNoise, float offset)
         {
             var bitmap = new Bitmap(w, h, fmt);
 

FFMpegCore.Test/VideoTest.cs

@@ -12,245 +12,64 @@
 using FFMpegCore.Arguments;
 using FFMpegCore.Exceptions;
 using FFMpegCore.Pipes;
+using System.Threading;
 
 namespace FFMpegCore.Test
 {
     [TestClass]
     public class VideoTest
     {
-        public bool Convert(ContainerFormat type, bool multithreaded = false, VideoSize size = VideoSize.Original)
+        [TestMethod, Timeout(10000)]
+        public void Video_ToOGV()
         {
-            using var outputFile = new TemporaryFile($"out{type.Extension}");
+            using var outputFile = new TemporaryFile($"out{VideoType.Ogv.Extension}");
-
-            var input = FFProbe.Analyse(TestResources.Mp4Video);
-            FFMpeg.Convert(input, outputFile, type, size: size, multithreaded: multithreaded);
-            var outputVideo = FFProbe.Analyse(outputFile);
-
-            Assert.IsTrue(File.Exists(outputFile));
-            Assert.AreEqual(outputVideo.Duration.TotalSeconds, input.Duration.TotalSeconds, 0.1);
-            if (size == VideoSize.Original)
-            {
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-            else
-            {
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, (int)size);
-            }
-
-            return File.Exists(outputFile) && 
-                   outputVideo.Duration == input.Duration &&
-                   (
-                       (
-                           size == VideoSize.Original &&
-                           outputVideo.PrimaryVideoStream.Width == input.PrimaryVideoStream.Width &&
-                           outputVideo.PrimaryVideoStream.Height == input.PrimaryVideoStream.Height
-                       ) ||
-                       (
-                           size != VideoSize.Original &&
-                           outputVideo.PrimaryVideoStream.Width != input.PrimaryVideoStream.Width &&
-                           outputVideo.PrimaryVideoStream.Height != input.PrimaryVideoStream.Height &&
-                           outputVideo.PrimaryVideoStream.Height == (int)size
-                       )
-                   );
-        }
-
-        private void ConvertFromStreamPipe(ContainerFormat type, params IArgument[] arguments)
-        {
-            using var outputFile = new TemporaryFile($"out{type.Extension}");
             
-            var input = FFProbe.Analyse(TestResources.WebmVideo);
+            var success = FFMpegArguments
-            using var inputStream = File.OpenRead(input.Path);
+                .FromFileInput(TestResources.WebmVideo)
-            var processor = FFMpegArguments
+                .OutputToFile(outputFile, false)
-                .FromPipeInput(new StreamPipeSource(inputStream))
+                .ProcessSynchronously();
-                .OutputToFile(outputFile, false, opt =>
-                {
-                    foreach (var arg in arguments)
-                        opt.WithArgument(arg);
-                });
-
-            var scaling = arguments.OfType<ScaleArgument>().FirstOrDefault();
-
-            var success = processor.ProcessSynchronously();
-
-            var outputVideo = FFProbe.Analyse(outputFile);
-
             Assert.IsTrue(success);
-            Assert.IsTrue(File.Exists(outputFile));
-            Assert.IsTrue(Math.Abs((outputVideo.Duration - input.Duration).TotalMilliseconds) < 1000.0 / input.PrimaryVideoStream.FrameRate);
-
-            if (scaling?.Size == null)
-            {
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-            else
-            {
-                if (scaling.Size.Value.Width != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, scaling.Size.Value.Width);
-                }
-
-                if (scaling.Size.Value.Height != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, scaling.Size.Value.Height);
-                }
-
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-        }
-
-        private void ConvertToStreamPipe(params IArgument[] arguments)
-        {
-            using var ms = new MemoryStream();
-            var processor = FFMpegArguments
-                .FromFileInput(TestResources.Mp4Video)
-                .OutputToPipe(new StreamPipeSink(ms), opt =>
-                {
-                    foreach (var arg in arguments)
-                        opt.WithArgument(arg);
-                });
-
-            var scaling = arguments.OfType<ScaleArgument>().FirstOrDefault();
-
-            processor.ProcessSynchronously();
-
-            ms.Position = 0;
-            var outputVideo = FFProbe.Analyse(ms);
-
-            var input = FFProbe.Analyse(TestResources.Mp4Video);
-            // Assert.IsTrue(Math.Abs((outputVideo.Duration - input.Duration).TotalMilliseconds) < 1000.0 / input.PrimaryVideoStream.FrameRate);
-
-            if (scaling?.Size == null)
-            {
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-            else
-            {
-                if (scaling.Size.Value.Width != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, scaling.Size.Value.Width);
-                }
-
-                if (scaling.Size.Value.Height != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, scaling.Size.Value.Height);
-                }
-
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-        }
-
-        public void Convert(ContainerFormat type, Action<IMediaAnalysis> validationMethod, params IArgument[] arguments)
-        {
-            using var outputFile = new TemporaryFile($"out{type.Extension}");
-
-            var input = FFProbe.Analyse(TestResources.Mp4Video);
-
-            var processor = FFMpegArguments
-                .FromFileInput(TestResources.Mp4Video)
-                .OutputToFile(outputFile, false, opt =>
-                {
-                    foreach (var arg in arguments)
-                        opt.WithArgument(arg);
-                });
-
-            var scaling = arguments.OfType<ScaleArgument>().FirstOrDefault();
-            processor.ProcessSynchronously();
-
-            var outputVideo = FFProbe.Analyse(outputFile);
-
-            Assert.IsTrue(File.Exists(outputFile));
-            Assert.AreEqual(outputVideo.Duration.TotalSeconds, input.Duration.TotalSeconds, 0.1);
-            validationMethod?.Invoke(outputVideo);
-            if (scaling?.Size == null)
-            {
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-            else
-            {
-                if (scaling.Size.Value.Width != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, scaling.Size.Value.Width);
-                }
-
-                if (scaling.Size.Value.Height != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, scaling.Size.Value.Height);
-                }
-
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Width, input.PrimaryVideoStream.Width);
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Height, input.PrimaryVideoStream.Height);
-            }
-        }
-
-        public void Convert(ContainerFormat type, params IArgument[] inputArguments)
-        {
-            Convert(type, null, inputArguments);
-        }
-
-        public void ConvertFromPipe(ContainerFormat type, System.Drawing.Imaging.PixelFormat fmt, params IArgument[] arguments)
-        {
-            using var outputFile = new TemporaryFile($"out{type.Extension}");
-
-            var videoFramesSource = new RawVideoPipeSource(BitmapSource.CreateBitmaps(128, fmt, 256, 256));
-            var processor = FFMpegArguments.FromPipeInput(videoFramesSource).OutputToFile(outputFile, false, opt =>
-            {
-                foreach (var arg in arguments)
-                    opt.WithArgument(arg);
-            });
-            var scaling = arguments.OfType<ScaleArgument>().FirstOrDefault();
-            processor.ProcessSynchronously();
-
-            var outputVideo = FFProbe.Analyse(outputFile);
-
-            Assert.IsTrue(File.Exists(outputFile));
-
-            if (scaling?.Size == null)
-            {
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, videoFramesSource.Width);
-                Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, videoFramesSource.Height);
-            }
-            else
-            {
-                if (scaling.Size.Value.Width != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Width, scaling.Size.Value.Width);
-                }
-
-                if (scaling.Size.Value.Height != -1)
-                {
-                    Assert.AreEqual(outputVideo.PrimaryVideoStream.Height, scaling.Size.Value.Height);
-                }
-
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Width, videoFramesSource.Width);
-                Assert.AreNotEqual(outputVideo.PrimaryVideoStream.Height, videoFramesSource.Height);
-            }
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_ToMP4()
         {
-            Convert(VideoType.Mp4);
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+            
+            var success = FFMpegArguments
+                .FromFileInput(TestResources.WebmVideo)
+                .OutputToFile(outputFile, false)
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_ToMP4_YUV444p()
         {
-            Convert(VideoType.Mp4, (a) => Assert.IsTrue(a.VideoStreams.First().PixelFormat == "yuv444p"), 
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
-                new ForcePixelFormat("yuv444p"));
+            
+            var success = FFMpegArguments
+                .FromFileInput(TestResources.WebmVideo)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithVideoCodec(VideoCodec.LibX264)
+                    .ForcePixelFormat("yuv444p"))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
+            var analysis = FFProbe.Analyse(outputFile);
+            Assert.IsTrue(analysis.VideoStreams.First().PixelFormat == "yuv444p");
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_ToMP4_Args()
         {
-            Convert(VideoType.Mp4, new VideoCodecArgument(VideoCodec.LibX264));
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+            
+            var success = FFMpegArguments
+                .FromFileInput(TestResources.WebmVideo)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithVideoCodec(VideoCodec.LibX264))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
         }
 
         [DataTestMethod, Timeout(10000)]
@@ -258,13 +77,115 @@ public void Video_ToMP4_Args()
         [DataRow(System.Drawing.Imaging.PixelFormat.Format32bppArgb)]
         public void Video_ToMP4_Args_Pipe(System.Drawing.Imaging.PixelFormat pixelFormat)
         {
-            ConvertFromPipe(VideoType.Mp4, pixelFormat, new VideoCodecArgument(VideoCodec.LibX264));
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var videoFramesSource = new RawVideoPipeSource(BitmapSource.CreateBitmaps(128, pixelFormat, 256, 256));
+            var success = FFMpegArguments
+                .FromPipeInput(videoFramesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithVideoCodec(VideoCodec.LibX264))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Video_ToMP4_Args_Pipe_DifferentImageSizes()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var frames = new List<IVideoFrame> 
+            {
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format24bppRgb, 255, 255, 1, 0),
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format24bppRgb, 256, 256, 1, 0)
+            };
+
+            var videoFramesSource = new RawVideoPipeSource(frames);
+            var ex = Assert.ThrowsException<FFMpegException>(() => FFMpegArguments
+              .FromPipeInput(videoFramesSource)
+              .OutputToFile(outputFile, false, opt => opt
+                  .WithVideoCodec(VideoCodec.LibX264))
+              .ProcessSynchronously());
+
+            Assert.IsInstanceOfType(ex.GetBaseException(), typeof(FFMpegStreamFormatException));
+        }
+
+
+        [TestMethod, Timeout(10000)]
+        public async Task Video_ToMP4_Args_Pipe_DifferentImageSizes_Async()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var frames = new List<IVideoFrame>
+            {
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format24bppRgb, 255, 255, 1, 0),
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format24bppRgb, 256, 256, 1, 0)
+            };
+
+            var videoFramesSource = new RawVideoPipeSource(frames);
+            var ex = await Assert.ThrowsExceptionAsync<FFMpegException>(() => FFMpegArguments
+              .FromPipeInput(videoFramesSource)
+              .OutputToFile(outputFile, false, opt => opt
+                  .WithVideoCodec(VideoCodec.LibX264))
+              .ProcessAsynchronously());
+
+            Assert.IsInstanceOfType(ex.GetBaseException(), typeof(FFMpegStreamFormatException));
+        }
+
+        [TestMethod, Timeout(10000)]
+        public void Video_ToMP4_Args_Pipe_DifferentPixelFormats()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var frames = new List<IVideoFrame>
+            {
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format24bppRgb, 255, 255, 1, 0),
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format32bppRgb, 255, 255, 1, 0)
+            };
+
+            var videoFramesSource = new RawVideoPipeSource(frames);
+            var ex = Assert.ThrowsException<FFMpegException>(() => FFMpegArguments
+              .FromPipeInput(videoFramesSource)
+              .OutputToFile(outputFile, false, opt => opt
+                  .WithVideoCodec(VideoCodec.LibX264))
+              .ProcessSynchronously());
+
+            Assert.IsInstanceOfType(ex.GetBaseException(), typeof(FFMpegStreamFormatException));
+        }
+
+
+        [TestMethod, Timeout(10000)]
+        public async Task Video_ToMP4_Args_Pipe_DifferentPixelFormats_Async()
+        {
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+
+            var frames = new List<IVideoFrame>
+            {
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format24bppRgb, 255, 255, 1, 0),
+                BitmapSource.CreateVideoFrame(0, System.Drawing.Imaging.PixelFormat.Format32bppRgb, 255, 255, 1, 0)
+            };
+
+            var videoFramesSource = new RawVideoPipeSource(frames);
+            var ex = await Assert.ThrowsExceptionAsync<FFMpegException>(() => FFMpegArguments
+              .FromPipeInput(videoFramesSource)
+              .OutputToFile(outputFile, false, opt => opt
+                  .WithVideoCodec(VideoCodec.LibX264))
+              .ProcessAsynchronously());
+
+            Assert.IsInstanceOfType(ex.GetBaseException(), typeof(FFMpegStreamFormatException));
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_ToMP4_Args_StreamPipe()
         {
-            ConvertFromStreamPipe(VideoType.Mp4, new VideoCodecArgument(VideoCodec.LibX264));
+            using var input = File.OpenRead(TestResources.WebmVideo);
+            using var output = new TemporaryFile($"out{VideoType.Mp4.Extension}");
+            
+            var success = FFMpegArguments
+                .FromPipeInput(new StreamPipeSource(input))
+                .OutputToFile(output, false, opt => opt
+                    .WithVideoCodec(VideoCodec.LibX264))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
         }
 
         [TestMethod, Timeout(10000)]
@@ -276,18 +197,21 @@ await Assert.ThrowsExceptionAsync<FFMpegException>(async () =>
                 var pipeSource = new StreamPipeSink(ms);
                 await FFMpegArguments
                     .FromFileInput(TestResources.Mp4Video)
-                    .OutputToPipe(pipeSource, opt => opt.ForceFormat("mkv"))
+                    .OutputToPipe(pipeSource, opt => opt.ForceFormat("mp4"))
                     .ProcessAsynchronously();
             });
         }
+
+
         [TestMethod, Timeout(10000)]
         public void Video_StreamFile_OutputToMemoryStream()
         {
             var output = new MemoryStream();
 
             FFMpegArguments
-                .FromPipeInput(new StreamPipeSource(File.OpenRead(TestResources.WebmVideo)), options => options.ForceFormat("webm"))
+                .FromPipeInput(new StreamPipeSource(File.OpenRead(TestResources.WebmVideo)), opt => opt
-                .OutputToPipe(new StreamPipeSink(output), options => options
+                    .ForceFormat("webm"))
+                .OutputToPipe(new StreamPipeSink(output), opt => opt
                     .ForceFormat("mpegts"))
                 .ProcessSynchronously();
 
@@ -299,32 +223,41 @@ public void Video_StreamFile_OutputToMemoryStream()
         [TestMethod, Timeout(10000)]
         public void Video_ToMP4_Args_StreamOutputPipe_Failure()
         {
-            Assert.ThrowsException<FFMpegException>(() => ConvertToStreamPipe(new ForceFormatArgument("mkv")));
+            Assert.ThrowsException<FFMpegException>(() =>
+            {
+                using var ms = new MemoryStream();
+                FFMpegArguments
+                    .FromFileInput(TestResources.Mp4Video)
+                    .OutputToPipe(new StreamPipeSink(ms), opt => opt
+                        .ForceFormat("mkv"))
+                    .ProcessSynchronously();
+            });
         }
 
 
         [TestMethod, Timeout(10000)]
-        public void Video_ToMP4_Args_StreamOutputPipe_Async()
+        public async Task Video_ToMP4_Args_StreamOutputPipe_Async()
         {
-            using var ms = new MemoryStream();
+            await using var ms = new MemoryStream();
             var pipeSource = new StreamPipeSink(ms);
-            FFMpegArguments
+            await FFMpegArguments
                 .FromFileInput(TestResources.Mp4Video)
                 .OutputToPipe(pipeSource, opt => opt
                     .WithVideoCodec(VideoCodec.LibX264)
                     .ForceFormat("matroska"))
-                .ProcessAsynchronously()
+                .ProcessAsynchronously();
-                .WaitForResult();
         }
 
         [TestMethod, Timeout(10000)]
         public async Task TestDuplicateRun()
         {
-            FFMpegArguments.FromFileInput(TestResources.Mp4Video)
+            FFMpegArguments
+                .FromFileInput(TestResources.Mp4Video)
                 .OutputToFile("temporary.mp4")
                 .ProcessSynchronously();
             
-            await FFMpegArguments.FromFileInput(TestResources.Mp4Video)
+            await FFMpegArguments
+                .FromFileInput(TestResources.Mp4Video)
                 .OutputToFile("temporary.mp4")
                 .ProcessAsynchronously();
             
@@ -332,65 +265,115 @@ await FFMpegArguments.FromFileInput(TestResources.Mp4Video)
         }
 
         [TestMethod, Timeout(10000)]
-        public void Video_ToMP4_Args_StreamOutputPipe()
+        public void TranscodeToMemoryStream_Success()
         {
-            ConvertToStreamPipe(new VideoCodecArgument(VideoCodec.LibX264), new ForceFormatArgument("matroska"));
+            using var output = new MemoryStream();
+            var success = FFMpegArguments
+                .FromFileInput(TestResources.WebmVideo)
+                .OutputToPipe(new StreamPipeSink(output), opt => opt
+                    .WithVideoCodec(VideoCodec.LibVpx)
+                    .ForceFormat("matroska"))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
+
+            output.Position = 0;
+            var inputAnalysis = FFProbe.Analyse(TestResources.WebmVideo);
+            var outputAnalysis = FFProbe.Analyse(output);
+            Assert.AreEqual(inputAnalysis.Duration.TotalSeconds, outputAnalysis.Duration.TotalSeconds, 0.3);
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_ToTS()
         {
-            Convert(VideoType.Ts);
+            using var outputFile = new TemporaryFile($"out{VideoType.MpegTs.Extension}");
+            
+            var success = FFMpegArguments
+                .FromFileInput(TestResources.Mp4Video)
+                .OutputToFile(outputFile, false)
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_ToTS_Args()
         {
-            Convert(VideoType.Ts,
+            using var outputFile = new TemporaryFile($"out{VideoType.MpegTs.Extension}");
-                new CopyArgument(),
+            
-                new BitStreamFilterArgument(Channel.Video, Filter.H264_Mp4ToAnnexB),
+            var success = FFMpegArguments
-                new ForceFormatArgument(VideoType.MpegTs));
+                .FromFileInput(TestResources.Mp4Video)
+                .OutputToFile(outputFile, false, opt => opt
+                    .CopyChannel()
+                    .WithBitStreamFilter(Channel.Video, Filter.H264_Mp4ToAnnexB)
+                    .ForceFormat(VideoType.MpegTs))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
         }
 
         [DataTestMethod, Timeout(10000)]
         [DataRow(System.Drawing.Imaging.PixelFormat.Format24bppRgb)]
         [DataRow(System.Drawing.Imaging.PixelFormat.Format32bppArgb)]
-        public void Video_ToTS_Args_Pipe(System.Drawing.Imaging.PixelFormat pixelFormat)
+        public async Task Video_ToTS_Args_Pipe(System.Drawing.Imaging.PixelFormat pixelFormat)
         {
-            ConvertFromPipe(VideoType.Ts, pixelFormat, new ForceFormatArgument(VideoType.Ts));
+            using var output = new TemporaryFile($"out{VideoType.Ts.Extension}");
+            var input = new RawVideoPipeSource(BitmapSource.CreateBitmaps(128, pixelFormat, 256, 256));
+            
+            var success = await FFMpegArguments
+                .FromPipeInput(input)
+                .OutputToFile(output, false, opt => opt
+                    .ForceFormat(VideoType.Ts))
+                .ProcessAsynchronously();
+            Assert.IsTrue(success);
+
+            var analysis = await FFProbe.AnalyseAsync(output);
+            Assert.AreEqual(VideoType.Ts.Name, analysis.Format.FormatName);
         }
 
         [TestMethod, Timeout(10000)]
-        public void Video_ToOGV_Resize()
+        public async Task Video_ToOGV_Resize()
         {
-            Convert(VideoType.Ogv, true, VideoSize.Ed);
+            using var outputFile = new TemporaryFile($"out{VideoType.Ogv.Extension}");
-        }
+            var success = await FFMpegArguments
-
+                .FromFileInput(TestResources.Mp4Video)
-        [TestMethod, Timeout(10000)]
+                .OutputToFile(outputFile, false, opt => opt
-        public void Video_ToOGV_Resize_Args()
+                    .Resize(200, 200)
-        {
+                    .WithVideoCodec(VideoCodec.LibTheora))
-            Convert(VideoType.Ogv, new ScaleArgument(VideoSize.Ed), new VideoCodecArgument(VideoCodec.LibTheora));
+                .ProcessAsynchronously();
+            Assert.IsTrue(success);
         }
 
         [DataTestMethod, Timeout(10000)]
         [DataRow(System.Drawing.Imaging.PixelFormat.Format24bppRgb)]
         [DataRow(System.Drawing.Imaging.PixelFormat.Format32bppArgb)]
         // [DataRow(PixelFormat.Format48bppRgb)]
-        public void Video_ToOGV_Resize_Args_Pipe(System.Drawing.Imaging.PixelFormat pixelFormat)
+        public void RawVideoPipeSource_Ogv_Scale(System.Drawing.Imaging.PixelFormat pixelFormat)
         {
-            ConvertFromPipe(VideoType.Ogv, pixelFormat, new ScaleArgument(VideoSize.Ed), new VideoCodecArgument(VideoCodec.LibTheora));
+            using var outputFile = new TemporaryFile($"out{VideoType.Ogv.Extension}");
+            var videoFramesSource = new RawVideoPipeSource(BitmapSource.CreateBitmaps(128, pixelFormat, 256, 256));
+            
+            FFMpegArguments
+                .FromPipeInput(videoFramesSource)
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithVideoFilters(filterOptions => filterOptions
+                        .Scale(VideoSize.Ed))
+                    .WithVideoCodec(VideoCodec.LibTheora))
+                .ProcessSynchronously();
+
+            var analysis = FFProbe.Analyse(outputFile);
+            Assert.AreEqual((int)VideoSize.Ed, analysis.PrimaryVideoStream!.Width);
         }
 
         [TestMethod, Timeout(10000)]
-        public void Video_ToMP4_Resize()
+        public void Scale_Mp4_Multithreaded()
         {
-            Convert(VideoType.Mp4, true, VideoSize.Ed);
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
-        }
+            
-
+            var success = FFMpegArguments
-        [TestMethod, Timeout(10000)]
+                .FromFileInput(TestResources.Mp4Video)
-        public void Video_ToMP4_Resize_Args()
+                .OutputToFile(outputFile, false, opt => opt
-        {
+                    .UsingMultithreading(true)
-            Convert(VideoType.Mp4, new ScaleArgument(VideoSize.Ld), new VideoCodecArgument(VideoCodec.LibX264));
+                    .WithVideoCodec(VideoCodec.LibX264))
+                .ProcessSynchronously();
+            Assert.IsTrue(success);
         }
 
         [DataTestMethod, Timeout(10000)]
@@ -399,40 +382,24 @@ public void Video_ToMP4_Resize_Args()
         // [DataRow(PixelFormat.Format48bppRgb)]
         public void Video_ToMP4_Resize_Args_Pipe(System.Drawing.Imaging.PixelFormat pixelFormat)
         {
-            ConvertFromPipe(VideoType.Mp4, pixelFormat, new ScaleArgument(VideoSize.Ld), new VideoCodecArgument(VideoCodec.LibX264));
+            using var outputFile = new TemporaryFile($"out{VideoType.Mp4.Extension}");
-        }
+            var videoFramesSource = new RawVideoPipeSource(BitmapSource.CreateBitmaps(128, pixelFormat, 256, 256));
-
+            
-        [TestMethod, Timeout(10000)]
+            var success = FFMpegArguments
-        public void Video_ToOGV()
+                .FromPipeInput(videoFramesSource)
-        {
+                .OutputToFile(outputFile, false, opt => opt
-            Convert(VideoType.Ogv);
+                    .WithVideoCodec(VideoCodec.LibX264))
-        }
+                .ProcessSynchronously();
-
+            Assert.IsTrue(success);
-        [TestMethod, Timeout(10000)]
-        public void Video_ToMP4_MultiThread()
-        {
-            Convert(VideoType.Mp4, true);
-        }
-
-        [TestMethod, Timeout(10000)]
-        public void Video_ToTS_MultiThread()
-        {
-            Convert(VideoType.Ts, true);
-        }
-
-        [TestMethod, Timeout(10000)]
-        public void Video_ToOGV_MultiThread()
-        {
-            Convert(VideoType.Ogv, true);
         }
 
         [TestMethod, Timeout(10000)]
         public void Video_Snapshot_InMemory()
         {
             var input = FFProbe.Analyse(TestResources.Mp4Video);
-            using var bitmap = FFMpeg.Snapshot(input);
+            using var bitmap = FFMpeg.Snapshot(TestResources.Mp4Video);
             
-            Assert.AreEqual(input.PrimaryVideoStream.Width, bitmap.Width);
+            Assert.AreEqual(input.PrimaryVideoStream!.Width, bitmap.Width);
             Assert.AreEqual(input.PrimaryVideoStream.Height, bitmap.Height);
             Assert.AreEqual(bitmap.RawFormat, ImageFormat.Png);
         }
@@ -443,10 +410,10 @@ public void Video_Snapshot_PersistSnapshot()
             var outputPath = new TemporaryFile("out.png");
             var input = FFProbe.Analyse(TestResources.Mp4Video);
 
-            FFMpeg.Snapshot(input, outputPath);
+            FFMpeg.Snapshot(TestResources.Mp4Video, outputPath);
 
             using var bitmap = Image.FromFile(outputPath);
-            Assert.AreEqual(input.PrimaryVideoStream.Width, bitmap.Width);
+            Assert.AreEqual(input.PrimaryVideoStream!.Width, bitmap.Width);
             Assert.AreEqual(input.PrimaryVideoStream.Height, bitmap.Height);
             Assert.AreEqual(bitmap.RawFormat, ImageFormat.Png);
         }
@@ -469,7 +436,7 @@ public void Video_Join()
             Assert.AreEqual(expectedDuration.Hours, result.Duration.Hours);
             Assert.AreEqual(expectedDuration.Minutes, result.Duration.Minutes);
             Assert.AreEqual(expectedDuration.Seconds, result.Duration.Seconds);
-            Assert.AreEqual(input.PrimaryVideoStream.Height, result.PrimaryVideoStream.Height);
+            Assert.AreEqual(input.PrimaryVideoStream!.Height, result.PrimaryVideoStream!.Height);
             Assert.AreEqual(input.PrimaryVideoStream.Width, result.PrimaryVideoStream.Width);
         }
 
@@ -493,7 +460,7 @@ public void Video_Join_Image_Sequence()
             Assert.IsTrue(success);
             var result = FFProbe.Analyse(outputFile);
             Assert.AreEqual(3, result.Duration.Seconds);
-            Assert.AreEqual(imageSet.First().Width, result.PrimaryVideoStream.Width);
+            Assert.AreEqual(imageSet.First().Width, result.PrimaryVideoStream!.Width);
             Assert.AreEqual(imageSet.First().Height, result.PrimaryVideoStream.Height);
         }
 
@@ -502,7 +469,7 @@ public void Video_With_Only_Audio_Should_Extract_Metadata()
         {
             var video = FFProbe.Analyse(TestResources.Mp4WithoutVideo);
             Assert.AreEqual(null, video.PrimaryVideoStream);
-            Assert.AreEqual("aac", video.PrimaryAudioStream.CodecName);
+            Assert.AreEqual("aac", video.PrimaryAudioStream!.CodecName);
             Assert.AreEqual(10, video.Duration.TotalSeconds, 0.5);
         }
 
@@ -557,7 +524,7 @@ public void Video_OutputsData()
             var outputFile = new TemporaryFile("out.mp4");
             var dataReceived = false;
             
-            FFMpegOptions.Configure(opt => opt.Encoding = Encoding.UTF8);
+            GlobalFFOptions.Configure(opt => opt.Encoding = Encoding.UTF8);
             var success = FFMpegArguments
                 .FromFileInput(TestResources.Mp4Video)
                 .WithGlobalOptions(options => options
@@ -588,7 +555,7 @@ public void Video_TranscodeInMemory()
 
             resStream.Position = 0;
             var vi = FFProbe.Analyse(resStream);
-            Assert.AreEqual(vi.PrimaryVideoStream.Width, 128);
+            Assert.AreEqual(vi.PrimaryVideoStream!.Width, 128);
             Assert.AreEqual(vi.PrimaryVideoStream.Height, 128);
         }
 
@@ -596,24 +563,114 @@ public void Video_TranscodeInMemory()
         public async Task Video_Cancel_Async()
         {
             var outputFile = new TemporaryFile("out.mp4");
-            
+
             var task = FFMpegArguments
-                .FromFileInput(TestResources.Mp4Video)
+                .FromFileInput("testsrc2=size=320x240[out0]; sine[out1]", false, args => args
+                    .WithCustomArgument("-re")
+                    .ForceFormat("lavfi"))
                 .OutputToFile(outputFile, false, opt => opt
-                    .Resize(new Size(1000, 1000))
                     .WithAudioCodec(AudioCodec.Aac)
                     .WithVideoCodec(VideoCodec.LibX264)
-                    .WithConstantRateFactor(14)
+                    .WithSpeedPreset(Speed.VeryFast))
-                    .WithSpeedPreset(Speed.VerySlow)
-                    .Loop(3))
                 .CancellableThrough(out var cancel)
                 .ProcessAsynchronously(false);
-            
+
             await Task.Delay(300);
             cancel();
-            
+
             var result = await task;
+
             Assert.IsFalse(result);
         }
+
+        [TestMethod, Timeout(10000)]
+        public async Task Video_Cancel_Async_With_Timeout()
+        {
+            var outputFile = new TemporaryFile("out.mp4");
+
+            var task = FFMpegArguments
+                .FromFileInput("testsrc2=size=320x240[out0]; sine[out1]", false, args => args
+                    .WithCustomArgument("-re")
+                    .ForceFormat("lavfi"))
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac)
+                    .WithVideoCodec(VideoCodec.LibX264)
+                    .WithSpeedPreset(Speed.VeryFast))
+                .CancellableThrough(out var cancel, 10000)
+                .ProcessAsynchronously(false);
+
+            await Task.Delay(300);
+            cancel();
+
+            var result = await task;
+
+            var outputInfo = await FFProbe.AnalyseAsync(outputFile);
+
+            Assert.IsTrue(result);
+            Assert.IsNotNull(outputInfo);
+            Assert.AreEqual(320, outputInfo.PrimaryVideoStream!.Width);
+            Assert.AreEqual(240, outputInfo.PrimaryVideoStream.Height);
+            Assert.AreEqual("h264", outputInfo.PrimaryVideoStream.CodecName);
+            Assert.AreEqual("aac", outputInfo.PrimaryAudioStream!.CodecName);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public async Task Video_Cancel_CancellationToken_Async()
+        {
+            var outputFile = new TemporaryFile("out.mp4");
+
+            var cts = new CancellationTokenSource();
+
+            var task = FFMpegArguments
+                .FromFileInput("testsrc2=size=320x240[out0]; sine[out1]", false, args => args
+                    .WithCustomArgument("-re")
+                    .ForceFormat("lavfi"))
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac)
+                    .WithVideoCodec(VideoCodec.LibX264)
+                    .WithSpeedPreset(Speed.VeryFast))
+                .CancellableThrough(cts.Token)
+                .ProcessAsynchronously(false);
+
+            await Task.Delay(300);
+            cts.Cancel();
+
+            var result = await task;
+
+            Assert.IsFalse(result);
+        }
+
+        [TestMethod, Timeout(10000)]
+        public async Task Video_Cancel_CancellationToken_Async_With_Timeout()
+        {
+            var outputFile = new TemporaryFile("out.mp4");
+
+            var cts = new CancellationTokenSource();
+
+            var task = FFMpegArguments
+                .FromFileInput("testsrc2=size=320x240[out0]; sine[out1]", false, args => args
+                    .WithCustomArgument("-re")
+                    .ForceFormat("lavfi"))
+                .OutputToFile(outputFile, false, opt => opt
+                    .WithAudioCodec(AudioCodec.Aac)
+                    .WithVideoCodec(VideoCodec.LibX264)
+                    .WithSpeedPreset(Speed.VeryFast))
+                .CancellableThrough(cts.Token, 5000)
+                .ProcessAsynchronously(false);
+
+            await Task.Delay(300);
+            cts.Cancel();
+
+            var result = await task;
+
+            var outputInfo = await FFProbe.AnalyseAsync(outputFile);
+
+            Assert.IsTrue(result);
+            Assert.IsNotNull(outputInfo);
+            Assert.AreEqual(320, outputInfo.PrimaryVideoStream!.Width);
+            Assert.AreEqual(240, outputInfo.PrimaryVideoStream.Height);
+            Assert.AreEqual("h264", outputInfo.PrimaryVideoStream.CodecName);
+            Assert.AreEqual("aac", outputInfo.PrimaryAudioStream!.CodecName);
+        }
     }
 }

FFMpegCore.sln

@@ -1,12 +1,14 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
+# Visual Studio Version 16
-VisualStudioVersion = 15.0.28307.329
+VisualStudioVersion = 16.0.31005.135
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FFMpegCore", "FFMpegCore\FFMpegCore.csproj", "{19DE2EC2-9955-4712-8096-C22EF6713E4F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FFMpegCore", "FFMpegCore\FFMpegCore.csproj", "{19DE2EC2-9955-4712-8096-C22EF6713E4F}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FFMpegCore.Test", "FFMpegCore.Test\FFMpegCore.Test.csproj", "{F20C8353-72D9-454B-9F16-3624DBAD2328}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FFMpegCore.Examples", "FFMpegCore.Examples\FFMpegCore.Examples.csproj", "{3125CF91-FFBD-4E4E-8930-247116AFE772}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +23,10 @@ Global
 		{F20C8353-72D9-454B-9F16-3624DBAD2328}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F20C8353-72D9-454B-9F16-3624DBAD2328}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F20C8353-72D9-454B-9F16-3624DBAD2328}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3125CF91-FFBD-4E4E-8930-247116AFE772}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3125CF91-FFBD-4E4E-8930-247116AFE772}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3125CF91-FFBD-4E4E-8930-247116AFE772}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3125CF91-FFBD-4E4E-8930-247116AFE772}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

FFMpegCore/Assembly.cs

@@ -0,0 +1,3 @@
+using System.Runtime.CompilerServices;
+
+[assembly: InternalsVisibleTo("FFMpegCore.Test")]

FFMpegCore/Extend/BitmapExtensions.cs

@@ -6,7 +6,7 @@ namespace FFMpegCore.Extend
 {
     public static class BitmapExtensions
     {
-        public static bool AddAudio(this Bitmap poster, string audio, string output)
+        public static bool AddAudio(this Image poster, string audio, string output)
         {
             var destination = $"{Environment.TickCount}.png";
             poster.Save(destination);

FFMpegCore/Extend/BitmapVideoFrameWrapper.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Drawing;
 using System.Drawing.Imaging;
+using System.IO;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
@@ -24,7 +25,7 @@ public BitmapVideoFrameWrapper(Bitmap bitmap)
             Format = ConvertStreamFormat(bitmap.PixelFormat);
         }
 
-        public void Serialize(System.IO.Stream stream)
+        public void Serialize(Stream stream)
         {
             var data = Source.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadOnly, Source.PixelFormat);
 
@@ -40,7 +41,7 @@ public void Serialize(System.IO.Stream stream)
             }
         }
 
-        public async Task SerializeAsync(System.IO.Stream stream, CancellationToken token)
+        public async Task SerializeAsync(Stream stream, CancellationToken token)
         {
             var data = Source.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadOnly, Source.PixelFormat);
 
@@ -67,6 +68,8 @@ private static string ConvertStreamFormat(PixelFormat fmt)
             {
                 case PixelFormat.Format16bppGrayScale:
                     return "gray16le";
+                case PixelFormat.Format16bppRgb555:
+                    return "bgr555le";
                 case PixelFormat.Format16bppRgb565:
                     return "bgr565le";
                 case PixelFormat.Format24bppRgb:

FFMpegCore/Extend/PcmAudioSampleWrapper.cs

@@ -0,0 +1,27 @@
+using FFMpegCore.Pipes;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+public class PcmAudioSampleWrapper : IAudioSample
+{
+    //This could actually be short or int, but copies would be inefficient.
+    //Handling bytes lets the user decide on the conversion, and abstract the library
+    //from handling shorts, unsigned shorts, integers, unsigned integers and floats.
+    private readonly byte[] _sample;
+
+    public PcmAudioSampleWrapper(byte[] sample)
+    {
+        _sample = sample;
+    }
+
+    public void Serialize(Stream stream)
+    {
+        stream.Write(_sample, 0, _sample.Length);
+    }
+
+    public async Task SerializeAsync(Stream stream, CancellationToken token)
+    {
+        await stream.WriteAsync(_sample, 0, _sample.Length, token);
+    }
+}

FFMpegCore/FFMpeg/Arguments/DemuxConcatArgument.cs

@@ -18,7 +18,7 @@ public DemuxConcatArgument(IEnumerable<string> values)
         {
             Values = values.Select(value => $"file '{value}'");
         }
-        private readonly string _tempFileName = Path.Combine(FFMpegOptions.Options.TempDirectory, Guid.NewGuid() + ".txt");
+        private readonly string _tempFileName = Path.Combine(GlobalFFOptions.Current.TemporaryFilesFolder, $"concat_{Guid.NewGuid()}.txt");
 
         public void Pre() => File.WriteAllLines(_tempFileName, Values);
         public Task During(CancellationToken cancellationToken = default) => Task.CompletedTask;

FFMpegCore/FFMpeg/Arguments/DrawTextArgument.cs

@@ -6,7 +6,7 @@ namespace FFMpegCore.Arguments
     /// <summary>
     /// Drawtext video filter argument
     /// </summary>
-    public class DrawTextArgument : IArgument
+    public class DrawTextArgument : IVideoFilterArgument
     {
         public readonly DrawTextOptions Options;
         
@@ -15,7 +15,8 @@ public DrawTextArgument(DrawTextOptions options)
             Options = options;
         }
         
-        public string Text => $"-vf drawtext=\"{Options.TextInternal}\"";
+        public string Key { get; } = "drawtext";
+        public string Value => Options.TextInternal;
     }
     
     public class DrawTextOptions

FFMpegCore/FFMpeg/Arguments/InputDeviceArgument.cs

@@ -0,0 +1,26 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FFMpegCore.Arguments
+{
+    /// <summary>
+    /// Represents an input device parameter
+    /// </summary>
+    public class InputDeviceArgument : IInputArgument
+    {
+        private readonly string Device;
+
+        public InputDeviceArgument(string device)
+        {
+            Device = device;
+        }
+
+        public Task During(CancellationToken cancellationToken = default) => Task.CompletedTask;
+
+        public void Pre() { }
+
+        public void Post() { }
+
+        public string Text => $"-i {Device}";
+    }
+}

FFMpegCore/FFMpeg/Arguments/InputPipeArgument.cs

@@ -17,7 +17,7 @@ public InputPipeArgument(IPipeSource writer) : base(PipeDirection.Out)
             Writer = writer;
         }
 
-        public override string Text => $"-y {Writer.GetStreamArguments()} -i \"{PipePath}\"";
+        public override string Text => $"{Writer.GetStreamArguments()} -i \"{PipePath}\"";
 
         protected override async Task ProcessDataAsync(CancellationToken token)
         {

FFMpegCore/FFMpeg/Arguments/OutputUrlArgument.cs

@@ -0,0 +1,27 @@
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FFMpegCore.Arguments
+{
+    /// <summary>
+    /// Represents outputting to url using supported protocols
+    /// See http://ffmpeg.org/ffmpeg-protocols.html
+    /// </summary>
+    public class OutputUrlArgument : IOutputArgument
+    {
+        public readonly string Url;
+
+        public OutputUrlArgument(string url)
+        {
+            Url = url;
+        }
+
+        public void Post() { }
+
+        public Task During(CancellationToken cancellationToken = default) => Task.CompletedTask;
+
+        public void Pre() { }
+
+        public string Text => Url;
+    }
+}

FFMpegCore/FFMpeg/Arguments/PipeArgument.cs

@@ -40,14 +40,17 @@ public async Task During(CancellationToken cancellationToken = default)
         {
             try
             {
-                await ProcessDataAsync(cancellationToken);
+                await ProcessDataAsync(cancellationToken);           
-                Debug.WriteLine($"Disconnecting NamedPipeServerStream on {GetType().Name}");
-                Pipe?.Disconnect();
             }
             catch (TaskCanceledException)
             {
                 Debug.WriteLine($"ProcessDataAsync on {GetType().Name} cancelled");
             }
+            finally
+            {
+                Debug.WriteLine($"Disconnecting NamedPipeServerStream on {GetType().Name}");
+                Pipe?.Disconnect();
+            }
         }
 
         protected abstract Task ProcessDataAsync(CancellationToken token);

FFMpegCore/FFMpeg/Arguments/ScaleArgument.cs

@@ -6,7 +6,7 @@ namespace FFMpegCore.Arguments
     /// <summary>
     /// Represents scale parameter
     /// </summary>
-    public class ScaleArgument : IArgument
+    public class ScaleArgument : IVideoFilterArgument
     {
         public readonly Size? Size;
         public ScaleArgument(Size? size)
@@ -18,9 +18,10 @@ public ScaleArgument(int width, int height) : this(new Size(width, height)) { }
 
         public ScaleArgument(VideoSize videosize)
         {
-            Size = videosize == VideoSize.Original ? new Size(-1, -1) : new Size(-1, (int)videosize);
+            Size = videosize == VideoSize.Original ? null : (Size?)new Size(-1, (int)videosize);
         }
 
-        public virtual string Text => Size.HasValue ? $"-vf scale={Size.Value.Width}:{Size.Value.Height}" : string.Empty;
+        public string Key { get; } = "scale";
+        public string Value => Size == null ? string.Empty : $"{Size.Value.Width}:{Size.Value.Height}";
     }
 }

FFMpegCore/FFMpeg/Arguments/SeekArgument.cs

@@ -8,11 +8,28 @@ namespace FFMpegCore.Arguments
     public class SeekArgument : IArgument
     {
         public readonly TimeSpan? SeekTo;
+
         public SeekArgument(TimeSpan? seekTo)
         {
             SeekTo = seekTo;
         }
-        
+
-        public string Text => !SeekTo.HasValue ? string.Empty : $"-ss {SeekTo.Value}";
+        public string Text {
+            get { 
+                if(SeekTo.HasValue)
+                {
+                    int hours = SeekTo.Value.Hours;
+                    if(SeekTo.Value.Days > 0)
+                    {
+                        hours += SeekTo.Value.Days * 24;
+                    }
+                    return $"-ss {hours.ToString("00")}:{SeekTo.Value.Minutes.ToString("00")}:{SeekTo.Value.Seconds.ToString("00")}.{SeekTo.Value.Milliseconds.ToString("000")}";
+                }
+                else
+                {
+                    return string.Empty;
+                }
+            }
+        }
     }
 }

FFMpegCore/FFMpeg/Arguments/SetMirroringArgument.cs

@@ -0,0 +1,30 @@
+using FFMpegCore.Enums;
+using System;
+
+namespace FFMpegCore.Arguments
+{
+    public class SetMirroringArgument : IVideoFilterArgument
+    {
+        public SetMirroringArgument(Mirroring mirroring)
+        {
+            Mirroring = mirroring;
+        }
+
+        public Mirroring Mirroring { get; set; }
+
+        public string Key => string.Empty;
+
+        public string Value
+        {
+            get
+            {
+                return Mirroring switch
+                {
+                    Mirroring.Horizontal => "hflip",
+                    Mirroring.Vertical => "vflip",
+                    _ => throw new ArgumentOutOfRangeException(nameof(Mirroring))
+                };
+            }
+        }
+    }
+}

FFMpegCore/FFMpeg/Arguments/SizeArgument.cs

@@ -1,19 +1,20 @@
 using System.Drawing;
-using FFMpegCore.Enums;
 
 namespace FFMpegCore.Arguments
 {
     /// <summary>
     /// Represents size parameter
     /// </summary>
-    public class SizeArgument : ScaleArgument
+    public class SizeArgument : IArgument
     {
-        public SizeArgument(Size? value) : base(value) { }
+        public readonly Size? Size;
+        public SizeArgument(Size? size)
+        {
+            Size = size;
+        }
 
-        public SizeArgument(VideoSize videosize) : base(videosize) { }
+        public SizeArgument(int width, int height) : this(new Size(width, height)) { }
 
-        public SizeArgument(int width, int height) : base(width, height) { }
+        public string Text => Size == null ? string.Empty : $"-s {Size.Value.Width}x{Size.Value.Height}";
-
-        public override string Text => Size.HasValue ? $"-s {Size.Value.Width}x{Size.Value.Height}" : string.Empty;
     }
 }

FFMpegCore/FFMpeg/Arguments/TransposeArgument.cs

@@ -9,7 +9,7 @@ namespace FFMpegCore.Arguments
     /// 2 = 90CounterClockwise
     /// 3 = 90Clockwise and Vertical Flip
     /// </summary>
-    public class TransposeArgument : IArgument
+    public class TransposeArgument : IVideoFilterArgument
     {
         public readonly Transposition Transposition;
         public TransposeArgument(Transposition transposition)
@@ -17,6 +17,7 @@ public TransposeArgument(Transposition transposition)
             Transposition = transposition;
         }
 
-        public string Text => $"-vf \"transpose={(int)Transposition}\"";
+        public string Key { get; } = "transpose";
+        public string Value => ((int)Transposition).ToString();
     }
 }

FFMpegCore/FFMpeg/Arguments/VideoFiltersArgument.cs

@@ -0,0 +1,60 @@
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using FFMpegCore.Enums;
+using FFMpegCore.Exceptions;
+
+namespace FFMpegCore.Arguments
+{
+    public class VideoFiltersArgument : IArgument
+    {
+        public readonly VideoFilterOptions Options;
+        
+        public VideoFiltersArgument(VideoFilterOptions options)
+        {
+            Options = options;
+        }
+
+        public string Text => GetText();
+
+        private string GetText()
+        {
+            if (!Options.Arguments.Any())
+                throw new FFMpegArgumentException("No video-filter arguments provided");
+
+            var arguments = Options.Arguments
+                .Where(arg => !string.IsNullOrEmpty(arg.Value))
+                .Select(arg =>
+                {
+                    var escapedValue = arg.Value.Replace(",", "\\,");
+                    return string.IsNullOrEmpty(arg.Key) ? escapedValue : $"{arg.Key}={escapedValue}";
+                });
+
+            return $"-vf \"{string.Join(", ", arguments)}\"";
+        }
+    }
+
+    public interface IVideoFilterArgument
+    {
+        public string Key { get; }
+        public string Value { get; }
+    }
+
+    public class VideoFilterOptions
+    {
+        public List<IVideoFilterArgument> Arguments { get; } = new List<IVideoFilterArgument>();
+        
+        public VideoFilterOptions Scale(VideoSize videoSize) => WithArgument(new ScaleArgument(videoSize));
+        public VideoFilterOptions Scale(int width, int height) => WithArgument(new ScaleArgument(width, height));
+        public VideoFilterOptions Scale(Size size) => WithArgument(new ScaleArgument(size));
+        public VideoFilterOptions Transpose(Transposition transposition) => WithArgument(new TransposeArgument(transposition));
+        public VideoFilterOptions Mirror(Mirroring mirroring) => WithArgument(new SetMirroringArgument(mirroring));
+        public VideoFilterOptions DrawText(DrawTextOptions drawTextOptions) => WithArgument(new DrawTextArgument(drawTextOptions));
+
+        private VideoFilterOptions WithArgument(IVideoFilterArgument argument)
+        {
+            Arguments.Add(argument);
+            return this;
+        }
+    }
+}

FFMpegCore/FFMpeg/Enums/ContainerFormat.cs

@@ -15,8 +15,8 @@ public string Extension
         {
             get
             {
-                if (FFMpegOptions.Options.ExtensionOverrides.ContainsKey(Name))
+                if (GlobalFFOptions.Current.ExtensionOverrides.ContainsKey(Name))
-                    return FFMpegOptions.Options.ExtensionOverrides[Name];
+                    return GlobalFFOptions.Current.ExtensionOverrides[Name];
                 return "." + Name;
             }
         }

FFMpegCore/FFMpeg/Enums/Mirroring.cs

@@ -0,0 +1,8 @@
+namespace FFMpegCore.Enums
+{
+    public enum Mirroring
+    {
+        Vertical,
+        Horizontal
+    }
+}

FFMpegCore/FFMpeg/Exceptions/FFMpegException.cs

@@ -4,7 +4,6 @@ namespace FFMpegCore.Exceptions
 {
     public enum FFMpegExceptionType
     {
-        Dependency,
         Conversion,
         File,
         Operation,
@@ -13,16 +12,49 @@ public enum FFMpegExceptionType
 
     public class FFMpegException : Exception
     {
-        public FFMpegException(FFMpegExceptionType type, string? message = null, Exception? innerException = null, string ffmpegErrorOutput = "", string ffmpegOutput = "")
+        public FFMpegException(FFMpegExceptionType type, string message, Exception? innerException = null, string ffMpegErrorOutput = "")
             : base(message, innerException)
         {
-            FfmpegOutput = ffmpegOutput;
+            FFMpegErrorOutput = ffMpegErrorOutput;
-            FfmpegErrorOutput = ffmpegErrorOutput;
             Type = type;
         }
-
+        public FFMpegException(FFMpegExceptionType type, string message, string ffMpegErrorOutput = "")
+            : base(message)
+        {
+            FFMpegErrorOutput = ffMpegErrorOutput;
+            Type = type;
+        }
+        public FFMpegException(FFMpegExceptionType type, string message)
+            : base(message)
+        {
+            FFMpegErrorOutput = string.Empty;
+            Type = type;
+        }
+        
         public FFMpegExceptionType Type { get; }
-        public string FfmpegOutput { get; }
+        public string FFMpegErrorOutput { get; }
-        public string FfmpegErrorOutput { get; }
+    }
+    public class FFOptionsException : Exception
+    {
+        public FFOptionsException(string message, Exception? innerException = null)
+            : base(message, innerException)
+        {
+        }
+    }
+
+    public class FFMpegArgumentException : Exception
+    {
+        public FFMpegArgumentException(string? message = null, Exception? innerException = null)
+            : base(message, innerException)
+        {
+        }
+    }
+
+    public class FFMpegStreamFormatException : FFMpegException
+    {
+        public FFMpegStreamFormatException(FFMpegExceptionType type, string message, Exception? innerException = null)
+            : base(type, message, innerException)
+        {
+        }
     }
 }

FFMpegCore/FFMpeg/FFMpeg.cs

@@ -16,19 +16,19 @@ public static class FFMpeg
         /// <summary>
         ///     Saves a 'png' thumbnail from the input video to drive
         /// </summary>
-        /// <param name="source">Source video analysis</param>
+        /// <param name="input">Source video analysis</param>
         /// <param name="output">Output video file path</param>
         /// <param name="captureTime">Seek position where the thumbnail should be taken.</param>
         /// <param name="size">Thumbnail size. If width or height equal 0, the other will be computed automatically.</param>
-        /// <param name="streamIndex">Index of video stream in input file. Default it is 0.</param>
         /// <returns>Bitmap with the requested snapshot.</returns>
-        public static bool Snapshot(IMediaAnalysis source, string output, Size? size = null, TimeSpan? captureTime = null, int streamIndex = 0)
+        public static bool Snapshot(string input, string output, Size? size = null, TimeSpan? captureTime = null)
         {
             if (Path.GetExtension(output) != FileExtension.Png)
                 output = Path.GetFileNameWithoutExtension(output) + FileExtension.Png;
 
-            var (arguments, outputOptions) = BuildSnapshotArguments(source, size, captureTime, streamIndex);
+            var source = FFProbe.Analyse(input);
-
+            var (arguments, outputOptions) = BuildSnapshotArguments(input, source, size, captureTime);
+            
             return arguments
                 .OutputToFile(output, true, outputOptions)
                 .ProcessSynchronously();
@@ -36,36 +36,37 @@ public static bool Snapshot(IMediaAnalysis source, string output, Size? size = n
         /// <summary>
         ///     Saves a 'png' thumbnail from the input video to drive
         /// </summary>
-        /// <param name="source">Source video analysis</param>
+        /// <param name="input">Source video analysis</param>
         /// <param name="output">Output video file path</param>
         /// <param name="captureTime">Seek position where the thumbnail should be taken.</param>
         /// <param name="size">Thumbnail size. If width or height equal 0, the other will be computed automatically.</param>
-        /// <param name="streamIndex">Index of video stream in input file. Default it is 0.</param>
         /// <returns>Bitmap with the requested snapshot.</returns>
-        public static Task<bool> SnapshotAsync(IMediaAnalysis source, string output, Size? size = null, TimeSpan? captureTime = null, int streamIndex = 0)
+        public static async Task<bool> SnapshotAsync(string input, string output, Size? size = null, TimeSpan? captureTime = null)
         {
             if (Path.GetExtension(output) != FileExtension.Png)
                 output = Path.GetFileNameWithoutExtension(output) + FileExtension.Png;
 
-            var (arguments, outputOptions) = BuildSnapshotArguments(source, size, captureTime, streamIndex);
+            var source = await FFProbe.AnalyseAsync(input);
-
+            var (arguments, outputOptions) = BuildSnapshotArguments(input, source, size, captureTime);
-            return arguments
+            
+            return await arguments
                 .OutputToFile(output, true, outputOptions)
                 .ProcessAsynchronously();
         }
+
         /// <summary>
         ///     Saves a 'png' thumbnail to an in-memory bitmap
         /// </summary>
-        /// <param name="source">Source video file.</param>
+        /// <param name="input">Source video file.</param>
         /// <param name="captureTime">Seek position where the thumbnail should be taken.</param>
         /// <param name="size">Thumbnail size. If width or height equal 0, the other will be computed automatically.</param>
-        /// <param name="streamIndex">Index of video stream in input file. Default it is 0.</param>
         /// <returns>Bitmap with the requested snapshot.</returns>
-        public static Bitmap Snapshot(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int streamIndex = 0)
+        public static Bitmap Snapshot(string input, Size? size = null, TimeSpan? captureTime = null)
         {
-            var (arguments, outputOptions) = BuildSnapshotArguments(source, size, captureTime, streamIndex);
+            var source = FFProbe.Analyse(input);
+            var (arguments, outputOptions) = BuildSnapshotArguments(input, source, size, captureTime);
             using var ms = new MemoryStream();
-
+            
             arguments
                 .OutputToPipe(new StreamPipeSink(ms), options => outputOptions(options
                     .ForceFormat("rawvideo")))
@@ -78,16 +79,16 @@ public static Bitmap Snapshot(IMediaAnalysis source, Size? size = null, TimeSpan
         /// <summary>
         ///     Saves a 'png' thumbnail to an in-memory bitmap
         /// </summary>
-        /// <param name="source">Source video file.</param>
+        /// <param name="input">Source video file.</param>
         /// <param name="captureTime">Seek position where the thumbnail should be taken.</param>
         /// <param name="size">Thumbnail size. If width or height equal 0, the other will be computed automatically.</param>
-        /// <param name="streamIndex">Index of video stream in input file. Default it is 0.</param>
         /// <returns>Bitmap with the requested snapshot.</returns>
-        public static async Task<Bitmap> SnapshotAsync(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int streamIndex = 0)
+        public static async Task<Bitmap> SnapshotAsync(string input, Size? size = null, TimeSpan? captureTime = null)
         {
-            var (arguments, outputOptions) = BuildSnapshotArguments(source, size, captureTime, streamIndex);
+            var source = await FFProbe.AnalyseAsync(input);
+            var (arguments, outputOptions) = BuildSnapshotArguments(input, source, size, captureTime);
             using var ms = new MemoryStream();
-
+            
             await arguments
                 .OutputToPipe(new StreamPipeSink(ms), options => outputOptions(options
                     .ForceFormat("rawvideo")))
@@ -97,25 +98,15 @@ await arguments
             return new Bitmap(ms);
         }
 
-        private static (FFMpegArguments, Action<FFMpegArgumentOptions> outputOptions) BuildSnapshotArguments(IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null, int streamIndex = 0)
+        private static (FFMpegArguments, Action<FFMpegArgumentOptions> outputOptions) BuildSnapshotArguments(string input, IMediaAnalysis source, Size? size = null, TimeSpan? captureTime = null)
         {
             captureTime ??= TimeSpan.FromSeconds(source.Duration.TotalSeconds / 3);
             size = PrepareSnapshotSize(source, size);
 
-            // If user will know about numeration of streams (user passes index of necessary video stream)            
-            int index = source.VideoStreams.Where(videoStream => videoStream.Index == streamIndex).FirstOrDefault().Index;
-
-            // User passes number of video stream
-            // E.g: user can pass 0, but index of first video stream will be 1 
-            /*int index = 0;
-            try { index = source.VideoStreams[streamIndex].Index; }
-            catch { };*/
-
             return (FFMpegArguments
-                .FromFileInput(source, options => options
+                .FromFileInput(input, false, options => options
-                    .Seek(captureTime)),
+                    .Seek(captureTime)), 
                 options => options
-                    .SelectStream(index)
                     .WithVideoCodec(VideoCodec.Png)
                     .WithFrameOutputCount(1)
                     .Resize(size));
@@ -123,13 +114,13 @@ private static (FFMpegArguments, Action<FFMpegArgumentOptions> outputOptions) Bu
 
         private static Size? PrepareSnapshotSize(IMediaAnalysis source, Size? wantedSize)
         {
-            if (wantedSize == null || (wantedSize.Value.Height <= 0 && wantedSize.Value.Width <= 0))
+            if (wantedSize == null || (wantedSize.Value.Height <= 0 && wantedSize.Value.Width <= 0) || source.PrimaryVideoStream == null)
                 return null;
-
+            
             var currentSize = new Size(source.PrimaryVideoStream.Width, source.PrimaryVideoStream.Height);
             if (source.PrimaryVideoStream.Rotation == 90 || source.PrimaryVideoStream.Rotation == 180)
                 currentSize = new Size(source.PrimaryVideoStream.Height, source.PrimaryVideoStream.Width);
-
+            
             if (wantedSize.Value.Width != currentSize.Width || wantedSize.Value.Height != currentSize.Height)
             {
                 if (wantedSize.Value.Width <= 0 && wantedSize.Value.Height > 0)
@@ -160,7 +151,7 @@ private static (FFMpegArguments, Action<FFMpegArgumentOptions> outputOptions) Bu
         /// <param name="multithreaded">Is encoding multithreaded.</param>
         /// <returns>Output video information.</returns>
         public static bool Convert(
-            IMediaAnalysis source,
+            string input,
             string output,
             ContainerFormat format,
             Speed speed = Speed.SuperFast,
@@ -169,10 +160,11 @@ public static bool Convert(
             bool multithreaded = false)
         {
             FFMpegHelper.ExtensionExceptionCheck(output, format.Extension);
+            var source = FFProbe.Analyse(input);
             FFMpegHelper.ConversionSizeExceptionCheck(source);
 
-            var scale = VideoSize.Original == size ? 1 : (double)source.PrimaryVideoStream.Height / (int)size;
+            var scale = VideoSize.Original == size ? 1 : (double)source.PrimaryVideoStream!.Height / (int)size;
-            var outputSize = new Size((int)(source.PrimaryVideoStream.Width / scale), (int)(source.PrimaryVideoStream.Height / scale));
+            var outputSize = new Size((int)(source.PrimaryVideoStream!.Width / scale), (int)(source.PrimaryVideoStream.Height / scale));
 
             if (outputSize.Width % 2 != 0)
                 outputSize.Width += 1;
@@ -180,41 +172,44 @@ public static bool Convert(
             return format.Name switch
             {
                 "mp4" => FFMpegArguments
-                    .FromFileInput(source)
+                    .FromFileInput(input)
                     .OutputToFile(output, true, options => options
                         .UsingMultithreading(multithreaded)
                         .WithVideoCodec(VideoCodec.LibX264)
                         .WithVideoBitrate(2400)
-                        .Scale(outputSize)
+                        .WithVideoFilters(filterOptions => filterOptions 
+                            .Scale(outputSize))
                         .WithSpeedPreset(speed)
                         .WithAudioCodec(AudioCodec.Aac)
                         .WithAudioBitrate(audioQuality))
                     .ProcessSynchronously(),
                 "ogv" => FFMpegArguments
-                    .FromFileInput(source)
+                    .FromFileInput(input)
                     .OutputToFile(output, true, options => options
                         .UsingMultithreading(multithreaded)
                         .WithVideoCodec(VideoCodec.LibTheora)
                         .WithVideoBitrate(2400)
-                        .Scale(outputSize)
+                        .WithVideoFilters(filterOptions => filterOptions 
+                            .Scale(outputSize))
                         .WithSpeedPreset(speed)
                         .WithAudioCodec(AudioCodec.LibVorbis)
                         .WithAudioBitrate(audioQuality))
                     .ProcessSynchronously(),
                 "mpegts" => FFMpegArguments
-                    .FromFileInput(source)
+                    .FromFileInput(input)
                     .OutputToFile(output, true, options => options
                         .CopyChannel()
                         .WithBitStreamFilter(Channel.Video, Filter.H264_Mp4ToAnnexB)
                         .ForceFormat(VideoType.Ts))
                     .ProcessSynchronously(),
                 "webm" => FFMpegArguments
-                    .FromFileInput(source)
+                    .FromFileInput(input)
                     .OutputToFile(output, true, options => options
                         .UsingMultithreading(multithreaded)
                         .WithVideoCodec(VideoCodec.LibVpx)
                         .WithVideoBitrate(2400)
-                        .Scale(outputSize)
+                        .WithVideoFilters(filterOptions => filterOptions 
+                            .Scale(outputSize))
                         .WithSpeedPreset(speed)
                         .WithAudioCodec(AudioCodec.LibVorbis)
                         .WithAudioBitrate(audioQuality))
@@ -246,21 +241,22 @@ public static bool PosterWithAudio(string image, string audio, string output)
                     .UsingShortest())
                 .ProcessSynchronously();
         }
-
+        
         /// <summary>
         ///     Joins a list of video files.
         /// </summary>
         /// <param name="output">Output video file.</param>
         /// <param name="videos">List of vides that need to be joined together.</param>
         /// <returns>Output video information.</returns>
-        public static bool Join(string output, params IMediaAnalysis[] videos)
+        public static bool Join(string output, params string[] videos)
         {
-            var temporaryVideoParts = videos.Select(video =>
+            var temporaryVideoParts = videos.Select(videoPath =>
             {
+                var video = FFProbe.Analyse(videoPath);
                 FFMpegHelper.ConversionSizeExceptionCheck(video);
-                var destinationPath = Path.Combine(FFMpegOptions.Options.TempDirectory, $"{Path.GetFileNameWithoutExtension(video.Path)}{FileExtension.Ts}");
+                var destinationPath = Path.Combine(GlobalFFOptions.Current.TemporaryFilesFolder, $"{Path.GetFileNameWithoutExtension(videoPath)}{FileExtension.Ts}");
-                Directory.CreateDirectory(FFMpegOptions.Options.TempDirectory);
+                Directory.CreateDirectory(GlobalFFOptions.Current.TemporaryFilesFolder);
-                Convert(video, destinationPath, VideoType.Ts);
+                Convert(videoPath, destinationPath, VideoType.Ts);
                 return destinationPath;
             }).ToArray();
 
@@ -278,16 +274,6 @@ public static bool Join(string output, params IMediaAnalysis[] videos)
                 Cleanup(temporaryVideoParts);
             }
         }
-        /// <summary>
-        ///     Joins a list of video files.
-        /// </summary>
-        /// <param name="output">Output video file.</param>
-        /// <param name="videos">List of vides that need to be joined together.</param>
-        /// <returns>Output video information.</returns>
-        public static bool Join(string output, params string[] videos)
-        {
-            return Join(output, videos.Select(videoPath => FFProbe.Analyse(videoPath)).ToArray());
-        }
 
         /// <summary>
         /// Converts an image sequence to a video.
@@ -298,7 +284,7 @@ public static bool Join(string output, params string[] videos)
         /// <returns>Output video information.</returns>
         public static bool JoinImageSequence(string output, double frameRate = 30, params ImageInfo[] images)
         {
-            var tempFolderName = Path.Combine(FFMpegOptions.Options.TempDirectory, Guid.NewGuid().ToString());
+            var tempFolderName = Path.Combine(GlobalFFOptions.Current.TemporaryFilesFolder, Guid.NewGuid().ToString());
             var temporaryImageFiles = images.Select((image, index) =>
             {
                 FFMpegHelper.ConversionSizeExceptionCheck(Image.FromFile(image.FullName));
@@ -337,7 +323,7 @@ public static bool SaveM3U8Stream(Uri uri, string output)
 
             if (uri.Scheme != "http" && uri.Scheme != "https")
                 throw new ArgumentException($"Uri: {uri.AbsoluteUri}, does not point to a valid http(s) stream.");
-
+            
             return FFMpegArguments
                 .FromUrlInput(uri)
                 .OutputToFile(output)
@@ -354,10 +340,10 @@ public static bool Mute(string input, string output)
         {
             var source = FFProbe.Analyse(input);
             FFMpegHelper.ConversionSizeExceptionCheck(source);
-            FFMpegHelper.ExtensionExceptionCheck(output, source.Extension);
+            // FFMpegHelper.ExtensionExceptionCheck(output, source.Extension);
 
             return FFMpegArguments
-                .FromFileInput(source)
+                .FromFileInput(input)
                 .OutputToFile(output, true, options => options
                     .CopyChannel(Channel.Video)
                     .DisableChannel(Channel.Audio))
@@ -393,10 +379,10 @@ public static bool ReplaceAudio(string input, string inputAudio, string output,
         {
             var source = FFProbe.Analyse(input);
             FFMpegHelper.ConversionSizeExceptionCheck(source);
-            FFMpegHelper.ExtensionExceptionCheck(output, source.Extension);
+            // FFMpegHelper.ExtensionExceptionCheck(output, source.Format.);
 
             return FFMpegArguments
-                .FromFileInput(source)
+                .FromFileInput(input)
                 .AddFileInput(inputAudio)
                 .OutputToFile(output, true, options => options
                     .CopyChannel()
@@ -412,7 +398,7 @@ internal static IReadOnlyList<PixelFormat> GetPixelFormatsInternal()
             FFMpegHelper.RootExceptionCheck();
 
             var list = new List<PixelFormat>();
-            using var instance = new Instances.Instance(FFMpegOptions.Options.FFmpegBinary(), "-pix_fmts");
+            using var instance = new Instances.Instance(GlobalFFOptions.GetFFMpegBinaryPath(), "-pix_fmts");
             instance.DataReceived += (e, args) =>
             {
                 if (PixelFormat.TryParse(args.Data, out var format))
@@ -427,14 +413,14 @@ internal static IReadOnlyList<PixelFormat> GetPixelFormatsInternal()
 
         public static IReadOnlyList<PixelFormat> GetPixelFormats()
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
                 return GetPixelFormatsInternal();
             return FFMpegCache.PixelFormats.Values.ToList().AsReadOnly();
         }
 
         public static bool TryGetPixelFormat(string name, out PixelFormat fmt)
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
             {
                 fmt = GetPixelFormatsInternal().FirstOrDefault(x => x.Name == name.ToLowerInvariant().Trim());
                 return fmt != null;
@@ -457,11 +443,11 @@ private static void ParsePartOfCodecs(Dictionary<string, Codec> codecs, string a
         {
             FFMpegHelper.RootExceptionCheck();
 
-            using var instance = new Instances.Instance(FFMpegOptions.Options.FFmpegBinary(), arguments);
+            using var instance = new Instances.Instance(GlobalFFOptions.GetFFMpegBinaryPath(), arguments);
             instance.DataReceived += (e, args) =>
             {
                 var codec = parser(args.Data);
-                if (codec != null)
+                if(codec != null)
                     if (codecs.TryGetValue(codec.Name, out var parentCodec))
                         parentCodec.Merge(codec);
                     else
@@ -499,16 +485,16 @@ internal static Dictionary<string, Codec> GetCodecsInternal()
 
         public static IReadOnlyList<Codec> GetCodecs()
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
                 return GetCodecsInternal().Values.ToList().AsReadOnly();
             return FFMpegCache.Codecs.Values.ToList().AsReadOnly();
         }
 
         public static IReadOnlyList<Codec> GetCodecs(CodecType type)
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
                 return GetCodecsInternal().Values.Where(x => x.Type == type).ToList().AsReadOnly();
-            return FFMpegCache.Codecs.Values.Where(x => x.Type == type).ToList().AsReadOnly();
+            return FFMpegCache.Codecs.Values.Where(x=>x.Type == type).ToList().AsReadOnly();
         }
 
         public static IReadOnlyList<Codec> GetVideoCodecs() => GetCodecs(CodecType.Video);
@@ -518,7 +504,7 @@ public static IReadOnlyList<Codec> GetCodecs(CodecType type)
 
         public static bool TryGetCodec(string name, out Codec codec)
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
             {
                 codec = GetCodecsInternal().Values.FirstOrDefault(x => x.Name == name.ToLowerInvariant().Trim());
                 return codec != null;
@@ -541,7 +527,7 @@ internal static IReadOnlyList<ContainerFormat> GetContainersFormatsInternal()
             FFMpegHelper.RootExceptionCheck();
 
             var list = new List<ContainerFormat>();
-            using var instance = new Instances.Instance(FFMpegOptions.Options.FFmpegBinary(), "-formats");
+            using var instance = new Instances.Instance(GlobalFFOptions.GetFFMpegBinaryPath(), "-formats");
             instance.DataReceived += (e, args) =>
             {
                 if (ContainerFormat.TryParse(args.Data, out var fmt))
@@ -556,14 +542,14 @@ internal static IReadOnlyList<ContainerFormat> GetContainersFormatsInternal()
 
         public static IReadOnlyList<ContainerFormat> GetContainerFormats()
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
                 return GetContainersFormatsInternal();
             return FFMpegCache.ContainerFormats.Values.ToList().AsReadOnly();
         }
 
         public static bool TryGetContainerFormat(string name, out ContainerFormat fmt)
         {
-            if (!FFMpegOptions.Options.UseCache)
+            if (!GlobalFFOptions.Current.UseCache)
             {
                 fmt = GetContainersFormatsInternal().FirstOrDefault(x => x.Name == name.ToLowerInvariant().Trim());
                 return fmt != null;

FFMpegCore/FFMpeg/FFMpegArgumentOptions.cs

@@ -5,7 +5,7 @@
 
 namespace FFMpegCore
 {
-    public class FFMpegArgumentOptions : FFMpegOptionsBase
+    public class FFMpegArgumentOptions : FFMpegArgumentsBase
     {
         internal FFMpegArgumentOptions() { }
         
@@ -15,14 +15,10 @@ internal FFMpegArgumentOptions() { }
         public FFMpegArgumentOptions WithAudioBitrate(int bitrate) => WithArgument(new AudioBitrateArgument(bitrate));
         public FFMpegArgumentOptions WithAudioSamplingRate(int samplingRate = 48000) => WithArgument(new AudioSamplingRateArgument(samplingRate));
         public FFMpegArgumentOptions WithVariableBitrate(int vbr) => WithArgument(new VariableBitRateArgument(vbr));
-        
-        public FFMpegArgumentOptions Resize(VideoSize videoSize) => WithArgument(new SizeArgument(videoSize));
         public FFMpegArgumentOptions Resize(int width, int height) => WithArgument(new SizeArgument(width, height));
         public FFMpegArgumentOptions Resize(Size? size) => WithArgument(new SizeArgument(size));
         
-        public FFMpegArgumentOptions Scale(VideoSize videoSize) => WithArgument(new ScaleArgument(videoSize));
+
-        public FFMpegArgumentOptions Scale(int width, int height) => WithArgument(new ScaleArgument(width, height));
-        public FFMpegArgumentOptions Scale(Size size) => WithArgument(new ScaleArgument(size));
         
         public FFMpegArgumentOptions WithBitStreamFilter(Channel channel, Filter filter) => WithArgument(new BitStreamFilterArgument(channel, filter));
         public FFMpegArgumentOptions WithConstantRateFactor(int crf) => WithArgument(new ConstantRateFactorArgument(crf));
@@ -40,6 +36,13 @@ internal FFMpegArgumentOptions() { }
         public FFMpegArgumentOptions WithVideoCodec(Codec videoCodec) => WithArgument(new VideoCodecArgument(videoCodec));
         public FFMpegArgumentOptions WithVideoCodec(string videoCodec) => WithArgument(new VideoCodecArgument(videoCodec));
         public FFMpegArgumentOptions WithVideoBitrate(int bitrate) => WithArgument(new VideoBitrateArgument(bitrate));
+        public FFMpegArgumentOptions WithVideoFilters(Action<VideoFilterOptions> videoFilterOptions)
+        {
+            var videoFilterOptionsObj = new VideoFilterOptions();
+            videoFilterOptions(videoFilterOptionsObj);
+            return WithArgument(new VideoFiltersArgument(videoFilterOptionsObj));
+        }
+
         public FFMpegArgumentOptions WithFramerate(double framerate) => WithArgument(new FrameRateArgument(framerate));
         public FFMpegArgumentOptions WithoutMetadata() => WithArgument(new RemoveMetadataArgument());
         public FFMpegArgumentOptions WithSpeedPreset(Speed speed) => WithArgument(new SpeedPresetArgument(speed));
@@ -47,7 +50,6 @@ internal FFMpegArgumentOptions() { }
         public FFMpegArgumentOptions WithCustomArgument(string argument) => WithArgument(new CustomArgument(argument));
         
         public FFMpegArgumentOptions Seek(TimeSpan? seekTo) => WithArgument(new SeekArgument(seekTo));
-        public FFMpegArgumentOptions Transpose(Transposition transposition) => WithArgument(new TransposeArgument(transposition));
         public FFMpegArgumentOptions Loop(int times) => WithArgument(new LoopArgument(times));
         public FFMpegArgumentOptions OverwriteExisting() => WithArgument(new OverwriteArgument());
         public FFMpegArgumentOptions SelectStream(int index) => WithArgument(new MapStreamArgument(index));
@@ -57,8 +59,6 @@ internal FFMpegArgumentOptions() { }
         public FFMpegArgumentOptions ForcePixelFormat(string pixelFormat) => WithArgument(new ForcePixelFormat(pixelFormat));
         public FFMpegArgumentOptions ForcePixelFormat(PixelFormat pixelFormat) => WithArgument(new ForcePixelFormat(pixelFormat));
 
-        public FFMpegArgumentOptions DrawText(DrawTextOptions drawTextOptions) => WithArgument(new DrawTextArgument(drawTextOptions));
-
         public FFMpegArgumentOptions WithArgument(IArgument argument)
         {
             Arguments.Add(argument);

FFMpegCore/FFMpeg/FFMpegArgumentProcessor.cs

@@ -27,7 +27,7 @@ internal FFMpegArgumentProcessor(FFMpegArguments ffMpegArguments)
 
         public string Arguments => _ffMpegArguments.Text;
 
-        private event EventHandler CancelEvent = null!; 
+        private event EventHandler<int> CancelEvent = null!; 
 
         public FFMpegArgumentProcessor NotifyOnProgress(Action<double> onPercentageProgress, TimeSpan totalTimeSpan)
         {
@@ -45,21 +45,30 @@ public FFMpegArgumentProcessor NotifyOnOutput(Action<string, DataType> onOutput)
             _onOutput = onOutput;
             return this;
         }
-        public FFMpegArgumentProcessor CancellableThrough(out Action cancel)
+        public FFMpegArgumentProcessor CancellableThrough(out Action cancel, int timeout = 0)
         {
-            cancel = () => CancelEvent?.Invoke(this, EventArgs.Empty);
+            cancel = () => CancelEvent?.Invoke(this, timeout);
             return this;
         }
-        public bool ProcessSynchronously(bool throwOnError = true)
+        public FFMpegArgumentProcessor CancellableThrough(CancellationToken token, int timeout = 0)
         {
-            using var instance = PrepareInstance(out var cancellationTokenSource);
+            token.Register(() => CancelEvent?.Invoke(this, timeout));
+            return this;
+        }
+        public bool ProcessSynchronously(bool throwOnError = true, FFOptions? ffMpegOptions = null)
+        {
+            using var instance = PrepareInstance(ffMpegOptions ?? GlobalFFOptions.Current, out var cancellationTokenSource);
             var errorCode = -1;
 
-            void OnCancelEvent(object sender, EventArgs args)
+            void OnCancelEvent(object sender, int timeout)
             {
                 instance.SendInput("q");
-                cancellationTokenSource.Cancel();
+
-                instance.Started = false;
+                if (!cancellationTokenSource.Token.WaitHandle.WaitOne(timeout, true))
+                {
+                    cancellationTokenSource.Cancel();
+                    instance.Started = false;
+                }
             }
             CancelEvent += OnCancelEvent;
             instance.Exited += delegate { cancellationTokenSource.Cancel(); };
@@ -76,37 +85,30 @@ void OnCancelEvent(object sender, EventArgs args)
             }
             catch (Exception e)
             {
-                if (!HandleException(throwOnError, e, instance.ErrorData, instance.OutputData)) return false;
+                if (!HandleException(throwOnError, e, instance.ErrorData)) return false;
             }
             finally
             {
                 CancelEvent -= OnCancelEvent;
             }
             
-            return HandleCompletion(throwOnError, errorCode, instance.ErrorData, instance.OutputData);
+            return HandleCompletion(throwOnError, errorCode, instance.ErrorData);
         }
 
-        private bool HandleCompletion(bool throwOnError, int errorCode, IReadOnlyList<string> errorData, IReadOnlyList<string> outputData)
+        public async Task<bool> ProcessAsynchronously(bool throwOnError = true, FFOptions? ffMpegOptions = null)
         {
-            if (throwOnError && errorCode != 0)
+            using var instance = PrepareInstance(ffMpegOptions ?? GlobalFFOptions.Current, out var cancellationTokenSource);
-                throw new FFMpegException(FFMpegExceptionType.Conversion, "FFMpeg exited with non-zero exitcode.", null, string.Join("\n", errorData), string.Join("\n", outputData));
-
-            _onPercentageProgress?.Invoke(100.0);
-            if (_totalTimespan.HasValue) _onTimeProgress?.Invoke(_totalTimespan.Value);
-
-            return errorCode == 0;
-        }
-
-        public async Task<bool> ProcessAsynchronously(bool throwOnError = true)
-        {
-            using var instance = PrepareInstance(out var cancellationTokenSource);
             var errorCode = -1;
 
-            void OnCancelEvent(object sender, EventArgs args)
+            void OnCancelEvent(object sender, int timeout)
             {
                 instance.SendInput("q");
-                cancellationTokenSource.Cancel();
+
-                instance.Started = false;
+                if (!cancellationTokenSource.Token.WaitHandle.WaitOne(timeout, true))
+                {
+                    cancellationTokenSource.Cancel();
+                    instance.Started = false;
+                }
             }
             CancelEvent += OnCancelEvent;
             
@@ -122,26 +124,38 @@ await Task.WhenAll(instance.FinishedRunning().ContinueWith(t =>
             }
             catch (Exception e)
             {
-                if (!HandleException(throwOnError, e, instance.ErrorData, instance.OutputData)) return false;
+                if (!HandleException(throwOnError, e, instance.ErrorData)) return false;
             }
             finally
             {
                 CancelEvent -= OnCancelEvent;
             }
 
-            return HandleCompletion(throwOnError, errorCode, instance.ErrorData, instance.OutputData);
+            return HandleCompletion(throwOnError, errorCode, instance.ErrorData);
         }
 
-        private Instance PrepareInstance(out CancellationTokenSource cancellationTokenSource)
+        private bool HandleCompletion(bool throwOnError, int exitCode, IReadOnlyList<string> errorData)
+        {
+            if (throwOnError && exitCode != 0)
+                throw new FFMpegException(FFMpegExceptionType.Process, $"ffmpeg exited with non-zero exit-code ({exitCode} - {string.Join("\n", errorData)})", null, string.Join("\n", errorData));
+
+            _onPercentageProgress?.Invoke(100.0);
+            if (_totalTimespan.HasValue) _onTimeProgress?.Invoke(_totalTimespan.Value);
+
+            return exitCode == 0;
+        }
+
+        private Instance PrepareInstance(FFOptions ffMpegOptions,
+            out CancellationTokenSource cancellationTokenSource)
         {
             FFMpegHelper.RootExceptionCheck();
-            FFMpegHelper.VerifyFFMpegExists();
+            FFMpegHelper.VerifyFFMpegExists(ffMpegOptions);
             var startInfo = new ProcessStartInfo
             {
-                FileName = FFMpegOptions.Options.FFmpegBinary(),
+                FileName = GlobalFFOptions.GetFFMpegBinaryPath(ffMpegOptions),
                 Arguments = _ffMpegArguments.Text,
-                StandardOutputEncoding = FFMpegOptions.Options.Encoding,
+                StandardOutputEncoding = ffMpegOptions.Encoding,
-                StandardErrorEncoding = FFMpegOptions.Options.Encoding,
+                StandardErrorEncoding = ffMpegOptions.Encoding,
             };
             var instance = new Instance(startInfo);
             cancellationTokenSource = new CancellationTokenSource();
@@ -153,12 +167,12 @@ private Instance PrepareInstance(out CancellationTokenSource cancellationTokenSo
         }
 
         
-        private static bool HandleException(bool throwOnError, Exception e, IReadOnlyList<string> errorData, IReadOnlyList<string> outputData)
+        private static bool HandleException(bool throwOnError, Exception e, IReadOnlyList<string> errorData)
         {
             if (!throwOnError)
                 return false;
 
-            throw new FFMpegException(FFMpegExceptionType.Process, "Exception thrown during processing", e, string.Join("\n", errorData), string.Join("\n", outputData));
+            throw new FFMpegException(FFMpegExceptionType.Process, "Exception thrown during processing", e, string.Join("\n", errorData));
         }
 
         private void OutputData(object sender, (DataType Type, string Data) msg)

FFMpegCore/FFMpeg/FFMpegArguments.cs

@@ -9,26 +9,26 @@
 
 namespace FFMpegCore
 {
-    public sealed class FFMpegArguments : FFMpegOptionsBase
+    public sealed class FFMpegArguments : FFMpegArgumentsBase
     {
-        private readonly FFMpegGlobalOptions _globalOptions = new FFMpegGlobalOptions();
+        private readonly FFMpegGlobalArguments _globalArguments = new FFMpegGlobalArguments();
         
         private FFMpegArguments() { }
 
-        public string Text => string.Join(" ", _globalOptions.Arguments.Concat(Arguments).Select(arg => arg.Text));
+        public string Text => string.Join(" ", _globalArguments.Arguments.Concat(Arguments).Select(arg => arg.Text));
 
         public static FFMpegArguments FromConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new ConcatArgument(filePaths), addArguments);
         public static FFMpegArguments FromDemuxConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new DemuxConcatArgument(filePaths), addArguments);
         public static FFMpegArguments FromFileInput(string filePath, bool verifyExists = true, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(verifyExists, filePath), addArguments);
         public static FFMpegArguments FromFileInput(FileInfo fileInfo, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(fileInfo.FullName, false), addArguments);
-        public static FFMpegArguments FromFileInput(IMediaAnalysis mediaAnalysis, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(mediaAnalysis.Path, false), addArguments);
         public static FFMpegArguments FromUrlInput(Uri uri, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputArgument(uri.AbsoluteUri, false), addArguments);
+        public static FFMpegArguments FromDeviceInput(string device, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputDeviceArgument(device), addArguments);
         public static FFMpegArguments FromPipeInput(IPipeSource sourcePipe, Action<FFMpegArgumentOptions>? addArguments = null) => new FFMpegArguments().WithInput(new InputPipeArgument(sourcePipe), addArguments);
 
         
-        public FFMpegArguments WithGlobalOptions(Action<FFMpegGlobalOptions> configureOptions)
+        public FFMpegArguments WithGlobalOptions(Action<FFMpegGlobalArguments> configureOptions)
         {
-            configureOptions(_globalOptions);
+            configureOptions(_globalArguments);
             return this;
         }
 
@@ -36,7 +36,6 @@ public FFMpegArguments WithGlobalOptions(Action<FFMpegGlobalOptions> configureOp
         public FFMpegArguments AddDemuxConcatInput(IEnumerable<string> filePaths, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new DemuxConcatArgument(filePaths), addArguments);
         public FFMpegArguments AddFileInput(string filePath, bool verifyExists = true, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(verifyExists, filePath), addArguments);
         public FFMpegArguments AddFileInput(FileInfo fileInfo, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(fileInfo.FullName, false), addArguments);
-        public FFMpegArguments AddFileInput(IMediaAnalysis mediaAnalysis, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(mediaAnalysis.Path, false), addArguments);
         public FFMpegArguments AddUrlInput(Uri uri, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputArgument(uri.AbsoluteUri, false), addArguments);
         public FFMpegArguments AddPipeInput(IPipeSource sourcePipe, Action<FFMpegArgumentOptions>? addArguments = null) => WithInput(new InputPipeArgument(sourcePipe), addArguments);
 
@@ -50,7 +49,8 @@ private FFMpegArguments WithInput(IInputArgument inputArgument, Action<FFMpegArg
         }
 
         public FFMpegArgumentProcessor OutputToFile(string file, bool overwrite = true, Action<FFMpegArgumentOptions>? addArguments = null) => ToProcessor(new OutputArgument(file, overwrite), addArguments);
-        public FFMpegArgumentProcessor OutputToFile(Uri uri, bool overwrite = true, Action<FFMpegArgumentOptions>? addArguments = null) => ToProcessor(new OutputArgument(uri.AbsolutePath, overwrite), addArguments);
+        public FFMpegArgumentProcessor OutputToUrl(string uri, Action<FFMpegArgumentOptions>? addArguments = null) => ToProcessor(new OutputUrlArgument(uri), addArguments);
+        public FFMpegArgumentProcessor OutputToUrl(Uri uri, Action<FFMpegArgumentOptions>? addArguments = null) => ToProcessor(new OutputUrlArgument(uri.ToString()), addArguments);
         public FFMpegArgumentProcessor OutputToPipe(IPipeSink reader, Action<FFMpegArgumentOptions>? addArguments = null) => ToProcessor(new OutputPipeArgument(reader), addArguments);
 
         private FFMpegArgumentProcessor ToProcessor(IOutputArgument argument, Action<FFMpegArgumentOptions>? addArguments)

FFMpegCore/FFMpeg/FFMpegArgumentsBase.cs

@@ -3,7 +3,7 @@
 
 namespace FFMpegCore
 {
-    public abstract class FFMpegOptionsBase
+    public abstract class FFMpegArgumentsBase
     {
         internal readonly List<IArgument> Arguments = new List<IArgument>();
     }

FFMpegCore/FFMpeg/FFMpegGlobalArguments.cs

@@ -0,0 +1,18 @@
+using FFMpegCore.Arguments;
+
+namespace FFMpegCore
+{
+    public sealed class FFMpegGlobalArguments : FFMpegArgumentsBase
+    {
+        internal FFMpegGlobalArguments() { }
+        
+        public FFMpegGlobalArguments WithVerbosityLevel(VerbosityLevel verbosityLevel = VerbosityLevel.Error) => WithOption(new VerbosityLevelArgument(verbosityLevel));
+        
+        private FFMpegGlobalArguments WithOption(IArgument argument)
+        {
+            Arguments.Add(argument);
+            return this;
+        }
+        
+    }
+}

FFMpegCore/FFMpeg/FFMpegGlobalOptions.cs

@@ -1,18 +0,0 @@
-using FFMpegCore.Arguments;
-
-namespace FFMpegCore
-{
-    public sealed class FFMpegGlobalOptions : FFMpegOptionsBase
-    {
-        internal FFMpegGlobalOptions() { }
-        
-        public FFMpegGlobalOptions WithVerbosityLevel(VerbosityLevel verbosityLevel = VerbosityLevel.Error) => WithOption(new VerbosityLevelArgument(verbosityLevel));
-        
-        private FFMpegGlobalOptions WithOption(IArgument argument)
-        {
-            Arguments.Add(argument);
-            return this;
-        }
-        
-    }
-}

FFMpegCore/FFMpeg/FFMpegOptions.cs

@@ -1,66 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Runtime.InteropServices;
-using System.Text;
-using System.Text.Json;
-
-namespace FFMpegCore
-{
-    public class FFMpegOptions
-    {
-        private static readonly string ConfigFile = "ffmpeg.config.json";
-        private static readonly string DefaultRoot = "";
-        private static readonly string DefaultTemp = Path.GetTempPath();
-        private static readonly Dictionary<string, string> DefaultExtensionsOverrides = new Dictionary<string, string>
-        {
-            { "mpegts", ".ts" },
-        };
-
-        public static FFMpegOptions Options { get; private set; } = new FFMpegOptions();
-
-        public static void Configure(Action<FFMpegOptions> optionsAction)
-        {
-            optionsAction?.Invoke(Options);
-        }
-
-        public static void Configure(FFMpegOptions options)
-        {
-            Options = options ?? throw new ArgumentNullException(nameof(options));
-        }
-
-        static FFMpegOptions()
-        {
-            if (File.Exists(ConfigFile))
-            {
-                Options = JsonSerializer.Deserialize<FFMpegOptions>(File.ReadAllText(ConfigFile))!;
-                foreach (var pair in DefaultExtensionsOverrides)
-                    if (!Options.ExtensionOverrides.ContainsKey(pair.Key)) Options.ExtensionOverrides.Add(pair.Key, pair.Value);
-            }
-        }
-
-        public string RootDirectory { get; set; } = DefaultRoot;
-        public string TempDirectory { get; set; } = DefaultTemp;
-        public bool UseCache { get; set; } = true;
-        public Encoding Encoding { get; set; } = Encoding.Default;
-
-        public string FFmpegBinary() => FFBinary("FFMpeg");
-
-        public string FFProbeBinary() => FFBinary("FFProbe");
-
-        public Dictionary<string, string> ExtensionOverrides { get; private set; } = new Dictionary<string, string>();
-
-        private static string FFBinary(string name)
-        {
-            var ffName = name.ToLowerInvariant();
-            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
-                ffName += ".exe";
-
-            var target = Environment.Is64BitProcess ? "x64" : "x86";
-            if (Directory.Exists(Path.Combine(Options.RootDirectory, target)))
-                ffName = Path.Combine(target, ffName);
-
-            return Path.Combine(Options.RootDirectory, ffName);
-        }
-    }
-}

FFMpegCore/FFMpeg/Pipes/IAudioSample.cs

@@ -0,0 +1,16 @@
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FFMpegCore.Pipes
+{
+    /// <summary>
+    /// Interface for Audio sample
+    /// </summary>
+    public interface IAudioSample
+    {
+        void Serialize(Stream stream);
+
+        Task SerializeAsync(Stream stream, CancellationToken token);
+    }
+}

FFMpegCore/FFMpeg/Pipes/IPipeSink.cs

@@ -1,11 +1,12 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
 {
     public interface IPipeSink
     {
-        Task ReadAsync(System.IO.Stream inputStream, CancellationToken cancellationToken);
+        Task ReadAsync(Stream inputStream, CancellationToken cancellationToken);
         string GetFormat();
     }
 }

FFMpegCore/FFMpeg/Pipes/IPipeSource.cs

@@ -1,4 +1,5 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
@@ -9,6 +10,6 @@ namespace FFMpegCore.Pipes
     public interface IPipeSource
     {
         string GetStreamArguments();
-        Task WriteAsync(System.IO.Stream outputStream, CancellationToken cancellationToken);
+        Task WriteAsync(Stream outputStream, CancellationToken cancellationToken);
     }
 }

FFMpegCore/FFMpeg/Pipes/IVideoFrame.cs

@@ -1,4 +1,5 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
@@ -12,7 +13,7 @@ public interface IVideoFrame
         int Height { get; }
         string Format { get; }
 
-        void Serialize(System.IO.Stream pipe);
+        void Serialize(Stream pipe);
-        Task SerializeAsync(System.IO.Stream pipe, CancellationToken token);
+        Task SerializeAsync(Stream pipe, CancellationToken token);
     }
 }

FFMpegCore/FFMpeg/Pipes/RawAudioPipeSource.cs

@@ -0,0 +1,46 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace FFMpegCore.Pipes
+{
+    /// <summary>
+    /// Implementation of <see cref="IPipeSource"/> for a raw audio stream that is gathered from <see cref="IEnumerator{IAudioFrame}"/>.
+    /// It is the user's responbility to make sure the enumerated samples match the configuration provided to this pipe.
+    /// </summary>
+    public class RawAudioPipeSource : IPipeSource
+    {
+        private readonly IEnumerator<IAudioSample> _sampleEnumerator;
+
+        public string Format { get; set; } = "s16le";
+        public uint SampleRate { get; set; } = 8000;
+        public uint Channels { get; set; } = 1;
+
+        public RawAudioPipeSource(IEnumerator<IAudioSample> sampleEnumerator)
+        {
+            _sampleEnumerator = sampleEnumerator;
+        }
+
+        public RawAudioPipeSource(IEnumerable<IAudioSample> sampleEnumerator)
+            : this(sampleEnumerator.GetEnumerator()) { }
+
+        public string GetStreamArguments()
+        {
+            return $"-f {Format} -ar {SampleRate} -ac {Channels}";
+        }
+
+        public async Task WriteAsync(Stream outputStream, CancellationToken cancellationToken)
+        {
+            if (_sampleEnumerator.Current != null)
+            {
+                await _sampleEnumerator.Current.SerializeAsync(outputStream, cancellationToken).ConfigureAwait(false);
+            }
+
+            while (_sampleEnumerator.MoveNext())
+            {
+                await _sampleEnumerator.Current!.SerializeAsync(outputStream, cancellationToken).ConfigureAwait(false);
+            }
+        }
+    }
+}

FFMpegCore/FFMpeg/Pipes/RawVideoPipeSource.cs

@@ -1,5 +1,7 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
 using System.Threading;
 using System.Threading.Tasks;
 using FFMpegCore.Exceptions;
@@ -14,7 +16,7 @@ public class RawVideoPipeSource : IPipeSource
         public string StreamFormat { get; private set; } = null!;
         public int Width { get; private set; }
         public int Height { get; private set; }
-        public int FrameRate { get; set; } = 25;
+        public double FrameRate { get; set; } = 25;
         private bool _formatInitialized;
         private readonly IEnumerator<IVideoFrame> _framesEnumerator;
 
@@ -42,10 +44,10 @@ public string GetStreamArguments()
                 _formatInitialized = true;
             }
 
-            return $"-f rawvideo -r {FrameRate} -pix_fmt {StreamFormat} -s {Width}x{Height}";
+            return $"-f rawvideo -r {FrameRate.ToString(CultureInfo.InvariantCulture)} -pix_fmt {StreamFormat} -s {Width}x{Height}";
         }
 
-        public async Task WriteAsync(System.IO.Stream outputStream, CancellationToken cancellationToken)
+        public async Task WriteAsync(Stream outputStream, CancellationToken cancellationToken)
         {
             if (_framesEnumerator.Current != null)
             {
@@ -63,7 +65,7 @@ public async Task WriteAsync(System.IO.Stream outputStream, CancellationToken ca
         private void CheckFrameAndThrow(IVideoFrame frame)
         {
             if (frame.Width != Width || frame.Height != Height || frame.Format != StreamFormat)
-                throw new FFMpegException(FFMpegExceptionType.Operation, "Video frame is not the same format as created raw video stream\r\n" +
+                throw new FFMpegStreamFormatException(FFMpegExceptionType.Operation, "Video frame is not the same format as created raw video stream\r\n" +
                     $"Frame format: {frame.Width}x{frame.Height} pix_fmt: {frame.Format}\r\n" +
                     $"Stream format: {Width}x{Height} pix_fmt: {StreamFormat}");
         }

FFMpegCore/FFMpeg/Pipes/StreamPipeSink.cs

@@ -20,7 +20,7 @@ public StreamPipeSink(Stream destination)
             Writer = (inputStream, cancellationToken) => inputStream.CopyToAsync(destination, BlockSize, cancellationToken);
         }
 
-        public Task ReadAsync(System.IO.Stream inputStream, CancellationToken cancellationToken) 
+        public Task ReadAsync(Stream inputStream, CancellationToken cancellationToken) 
             => Writer(inputStream, cancellationToken);
 
         public string GetFormat() => Format;

FFMpegCore/FFMpeg/Pipes/StreamPipeSource.cs

@@ -1,4 +1,5 @@
-using System.Threading;
+using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FFMpegCore.Pipes
@@ -8,17 +9,17 @@ namespace FFMpegCore.Pipes
     /// </summary>
     public class StreamPipeSource : IPipeSource
     {
-        public System.IO.Stream Source { get; }
+        public Stream Source { get; }
         public int BlockSize { get; } = 4096;
         public string StreamFormat { get; } = string.Empty;
 
-        public StreamPipeSource(System.IO.Stream source)
+        public StreamPipeSource(Stream source)
         {
             Source = source;
         }
 
         public string GetStreamArguments() => StreamFormat;
 
-        public Task WriteAsync(System.IO.Stream outputStream, CancellationToken cancellationToken) => Source.CopyToAsync(outputStream, BlockSize, cancellationToken);
+        public Task WriteAsync(Stream outputStream, CancellationToken cancellationToken) => Source.CopyToAsync(outputStream, BlockSize, cancellationToken);
     }
 }

FFMpegCore/FFMpegCore.csproj

@@ -5,16 +5,17 @@
     <RepositoryUrl>https://github.com/rosenbjerg/FFMpegCore</RepositoryUrl>
     <PackageProjectUrl>https://github.com/rosenbjerg/FFMpegCore</PackageProjectUrl>
     <Copyright></Copyright>
-    <Description>A .NET Standard FFMpeg/FFProbe wrapper for easily integrating media analysis and conversion into your C# applications</Description>
+    <Description>A .NET Standard FFMpeg/FFProbe wrapper for easily integrating media analysis and conversion into your .NET applications</Description>
     <Version>3.0.0.0</Version>
     <AssemblyVersion>3.0.0.0</AssemblyVersion>
     <FileVersion>3.0.0.0</FileVersion>
-    <PackageReleaseNotes>- return null from FFProbe.Analyse* when no media format was detected
+    <PackageReleaseNotes>- Cancellation token support (thanks patagonaa)
-- Expose tags as string dictionary on IMediaAnalysis (thanks hey-red)</PackageReleaseNotes>
+- Support for setting stdout and stderr encoding for ffprobe (thanks CepheiSigma)
+- Improved ffprobe exceptions</PackageReleaseNotes>
     <LangVersion>8</LangVersion>
-    <PackageVersion>3.4.0</PackageVersion>
+    <PackageVersion>4.4.0</PackageVersion>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
-    <Authors>Malte Rosenbjerg, Vlad Jerca</Authors>
+    <Authors>Malte Rosenbjerg, Vlad Jerca, Max Bagryantsev</Authors>
     <PackageTags>ffmpeg ffprobe convert video audio mediafile resize analyze muxing</PackageTags>
     <RepositoryType>GitHub</RepositoryType>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
@@ -30,7 +31,7 @@
 
   <ItemGroup>
     <PackageReference Include="Instances" Version="1.6.0" />
-    <PackageReference Include="System.Drawing.Common" Version="5.0.0" />
+    <PackageReference Include="System.Drawing.Common" Version="5.0.2" />
     <PackageReference Include="System.Text.Json" Version="5.0.1" />
   </ItemGroup>
 

FFMpegCore/FFMpegCore.csproj.DotSettings

@@ -1,2 +1,3 @@
 <wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
-	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=ffmpeg/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=ffmpeg/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=ffprobe/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

FFMpegCore/FFOptions.cs

@@ -0,0 +1,37 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+
+namespace FFMpegCore
+{
+    public class FFOptions
+    {
+        /// <summary>
+        /// Folder container ffmpeg and ffprobe binaries. Leave empty if ffmpeg and ffprobe are present in PATH
+        /// </summary>
+        public string BinaryFolder { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Folder used for temporary files necessary for static methods on FFMpeg class
+        /// </summary>
+        public string TemporaryFilesFolder { get; set; } = Path.GetTempPath();
+        
+        /// <summary>
+        /// Encoding used for parsing stdout/stderr on ffmpeg and ffprobe processes
+        /// </summary>
+        public Encoding Encoding { get; set; } = Encoding.Default;
+
+        /// <summary>
+        /// 
+        /// </summary>
+        public Dictionary<string, string> ExtensionOverrides { get; set; } = new Dictionary<string, string>
+        {
+            { "mpegts", ".ts" },
+        };
+        
+        /// <summary>
+        /// Whether to cache calls to get ffmpeg codec, pixel- and container-formats
+        /// </summary>
+        public bool UseCache { get; set; } = true;
+    }
+}

FFMpegCore/FFProbe/Exceptions/FFProbeException.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace FFMpegCore.Exceptions
+{
+    public class FFProbeException : Exception
+    {
+        public FFProbeException(string message, Exception? inner = null) : base(message, inner)
+        {
+        }
+    }
+}

FFMpegCore/FFProbe/Exceptions/FFProbeProcessException.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+
+namespace FFMpegCore.Exceptions
+{
+    public class FFProbeProcessException : FFProbeException
+    {
+        public IReadOnlyCollection<string> ProcessErrors { get; }
+
+        public FFProbeProcessException(string message, IReadOnlyCollection<string> processErrors, Exception? inner = null) : base(message, inner)
+        {
+            ProcessErrors = processErrors;
+        }
+    }
+}

FFMpegCore/FFProbe/Exceptions/FormatNullException.cs

@@ -0,0 +1,9 @@
+namespace FFMpegCore.Exceptions
+{
+    public class FormatNullException : FFProbeException
+    {
+        public FormatNullException() : base("Format not specified")
+        {
+        }
+    }
+}

FFMpegCore/FFProbe/FFProbe.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics;
 using System.IO;
 using System.Text.Json;
 using System.Threading.Tasks;
@@ -12,26 +13,32 @@ namespace FFMpegCore
 {
     public static class FFProbe
     {
-        public static IMediaAnalysis? Analyse(string filePath, int outputCapacity = int.MaxValue)
+        public static IMediaAnalysis Analyse(string filePath, int outputCapacity = int.MaxValue, FFOptions? ffOptions = null)
         {
             if (!File.Exists(filePath)) 
                 throw new FFMpegException(FFMpegExceptionType.File, $"No file found at '{filePath}'");
             
-            using var instance = PrepareInstance(filePath, outputCapacity);
+            using var instance = PrepareInstance(filePath, outputCapacity, ffOptions ?? GlobalFFOptions.Current);
-            instance.BlockUntilFinished();
+            var exitCode = instance.BlockUntilFinished();
-            return ParseOutput(filePath, instance);
+            if (exitCode != 0)
+                throw new FFMpegException(FFMpegExceptionType.Process, $"ffprobe exited with non-zero exit-code ({exitCode} - {string.Join("\n", instance.ErrorData)})", null, string.Join("\n", instance.ErrorData));
+            
+            return ParseOutput(instance);
         }
-        public static IMediaAnalysis? Analyse(Uri uri, int outputCapacity = int.MaxValue)
+        public static IMediaAnalysis Analyse(Uri uri, int outputCapacity = int.MaxValue, FFOptions? ffOptions = null)
         {
-            using var instance = PrepareInstance(uri.AbsoluteUri, outputCapacity);
+            using var instance = PrepareInstance(uri.AbsoluteUri, outputCapacity, ffOptions ?? GlobalFFOptions.Current);
-            instance.BlockUntilFinished();
+            var exitCode = instance.BlockUntilFinished();
-            return ParseOutput(uri.AbsoluteUri, instance);
+            if (exitCode != 0)
+                throw new FFMpegException(FFMpegExceptionType.Process, $"ffprobe exited with non-zero exit-code ({exitCode} - {string.Join("\n", instance.ErrorData)})", null, string.Join("\n", instance.ErrorData));
+
+            return ParseOutput(instance);
         }
-        public static IMediaAnalysis? Analyse(Stream stream, int outputCapacity = int.MaxValue)
+        public static IMediaAnalysis Analyse(Stream stream, int outputCapacity = int.MaxValue, FFOptions? ffOptions = null)
         {
             var streamPipeSource = new StreamPipeSource(stream);
             var pipeArgument = new InputPipeArgument(streamPipeSource);
-            using var instance = PrepareInstance(pipeArgument.PipePath, outputCapacity);
+            using var instance = PrepareInstance(pipeArgument.PipePath, outputCapacity, ffOptions ?? GlobalFFOptions.Current);
             pipeArgument.Pre();
 
             var task = instance.FinishedRunning();
@@ -46,36 +53,36 @@ public static class FFProbe
             }
             var exitCode = task.ConfigureAwait(false).GetAwaiter().GetResult();
             if (exitCode != 0)
-                throw new FFMpegException(FFMpegExceptionType.Process, $"FFProbe process returned exit status {exitCode}", null, string.Join("\n", instance.ErrorData), string.Join("\n", instance.OutputData));
+                throw new FFMpegException(FFMpegExceptionType.Process, $"ffprobe exited with non-zero exit-code ({exitCode} - {string.Join("\n", instance.ErrorData)})", null, string.Join("\n", instance.ErrorData));
             
-            return ParseOutput(pipeArgument.PipePath, instance);
+            return ParseOutput(instance);
         }
-        public static async Task<IMediaAnalysis?> AnalyseAsync(string filePath, int outputCapacity = int.MaxValue)
+        public static async Task<IMediaAnalysis> AnalyseAsync(string filePath, int outputCapacity = int.MaxValue, FFOptions? ffOptions = null)
         {
             if (!File.Exists(filePath)) 
                 throw new FFMpegException(FFMpegExceptionType.File, $"No file found at '{filePath}'");
             
-            using var instance = PrepareInstance(filePath, outputCapacity);
+            using var instance = PrepareInstance(filePath, outputCapacity, ffOptions ?? GlobalFFOptions.Current);
-            await instance.FinishedRunning();
+            await instance.FinishedRunning().ConfigureAwait(false);
-            return ParseOutput(filePath, instance);
+            return ParseOutput(instance);
         }
-        public static async Task<IMediaAnalysis?> AnalyseAsync(Uri uri, int outputCapacity = int.MaxValue)
+        public static async Task<IMediaAnalysis> AnalyseAsync(Uri uri, int outputCapacity = int.MaxValue, FFOptions? ffOptions = null)
         {
-            using var instance = PrepareInstance(uri.AbsoluteUri, outputCapacity);
+            using var instance = PrepareInstance(uri.AbsoluteUri, outputCapacity, ffOptions ?? GlobalFFOptions.Current);
-            await instance.FinishedRunning();
+            await instance.FinishedRunning().ConfigureAwait(false);
-            return ParseOutput(uri.AbsoluteUri, instance);
+            return ParseOutput(instance);
         }
-        public static async Task<IMediaAnalysis?> AnalyseAsync(Stream stream, int outputCapacity = int.MaxValue)
+        public static async Task<IMediaAnalysis> AnalyseAsync(Stream stream, int outputCapacity = int.MaxValue, FFOptions? ffOptions = null)
         {
             var streamPipeSource = new StreamPipeSource(stream);
             var pipeArgument = new InputPipeArgument(streamPipeSource);
-            using var instance = PrepareInstance(pipeArgument.PipePath, outputCapacity);
+            using var instance = PrepareInstance(pipeArgument.PipePath, outputCapacity, ffOptions ?? GlobalFFOptions.Current);
             pipeArgument.Pre();
 
             var task = instance.FinishedRunning();
             try
             {
-                await pipeArgument.During();
+                await pipeArgument.During().ConfigureAwait(false);
             }
             catch(IOException)
             {
@@ -84,31 +91,39 @@ public static class FFProbe
             {
                 pipeArgument.Post();
             }
-            var exitCode = await task;
+            var exitCode = await task.ConfigureAwait(false);
             if (exitCode != 0)
-                throw new FFMpegException(FFMpegExceptionType.Process, $"FFProbe process returned exit status {exitCode}", null, string.Join("\n", instance.ErrorData), string.Join("\n", instance.OutputData));
+                throw new FFProbeProcessException($"ffprobe exited with non-zero exit-code ({exitCode} - {string.Join("\n", instance.ErrorData)})", instance.ErrorData);
             
             pipeArgument.Post();
-            return ParseOutput(pipeArgument.PipePath, instance);
+            return ParseOutput(instance);
         }
 
-        private static IMediaAnalysis? ParseOutput(string filePath, Instance instance)
+        private static IMediaAnalysis ParseOutput(Instance instance)
         {
             var json = string.Join(string.Empty, instance.OutputData);
             var ffprobeAnalysis = JsonSerializer.Deserialize<FFProbeAnalysis>(json, new JsonSerializerOptions
             {
                 PropertyNameCaseInsensitive = true
-            })!;
+            });
-            if (ffprobeAnalysis?.Format == null) return null;
+            
-            return new MediaAnalysis(filePath, ffprobeAnalysis);
+            if (ffprobeAnalysis?.Format == null)
+                throw new FormatNullException();
+            
+            return new MediaAnalysis(ffprobeAnalysis);
         }
 
-        private static Instance PrepareInstance(string filePath, int outputCapacity)
+        private static Instance PrepareInstance(string filePath, int outputCapacity, FFOptions ffOptions)
         {
             FFProbeHelper.RootExceptionCheck();
-            FFProbeHelper.VerifyFFProbeExists();
+            FFProbeHelper.VerifyFFProbeExists(ffOptions);
             var arguments = $"-loglevel error -print_format json -show_format -sexagesimal -show_streams \"{filePath}\"";
-            var instance = new Instance(FFMpegOptions.Options.FFProbeBinary(), arguments) {DataBufferCapacity = outputCapacity};
+            var startInfo = new ProcessStartInfo(GlobalFFOptions.GetFFProbeBinaryPath(), arguments)
+            {
+                StandardOutputEncoding = ffOptions.Encoding,
+                StandardErrorEncoding = ffOptions.Encoding
+            };
+            var instance = new Instance(startInfo) { DataBufferCapacity = outputCapacity };
             return instance;
         }
     }

FFMpegCore/FFProbe/IMediaAnalysis.cs

@@ -5,12 +5,10 @@ namespace FFMpegCore
 {
     public interface IMediaAnalysis
     {
-        string Path { get; }
-        string Extension { get; }
         TimeSpan Duration { get; }
         MediaFormat Format { get; }
-        AudioStream PrimaryAudioStream { get; }
+        AudioStream? PrimaryAudioStream { get; }
-        VideoStream PrimaryVideoStream { get; }
+        VideoStream? PrimaryVideoStream { get; }
         List<VideoStream> VideoStreams { get; }
         List<AudioStream> AudioStreams { get; }
     }

FFMpegCore/FFProbe/MediaAnalysis.cs

@@ -7,23 +7,18 @@ namespace FFMpegCore
 {
     internal class MediaAnalysis : IMediaAnalysis
     {
-        private static readonly Regex DurationRegex = new Regex("^(\\d{1,2}:\\d{1,2}:\\d{1,2}(.\\d{1,7})?)", RegexOptions.Compiled);
+        internal MediaAnalysis(FFProbeAnalysis analysis)
-
-        internal MediaAnalysis(string path, FFProbeAnalysis analysis)
         {
             Format = ParseFormat(analysis.Format);
             VideoStreams = analysis.Streams.Where(stream => stream.CodecType == "video").Select(ParseVideoStream).ToList();
             AudioStreams = analysis.Streams.Where(stream => stream.CodecType == "audio").Select(ParseAudioStream).ToList();
-            PrimaryVideoStream = VideoStreams.OrderBy(stream => stream.Index).FirstOrDefault();
-            PrimaryAudioStream = AudioStreams.OrderBy(stream => stream.Index).FirstOrDefault();
-            Path = path;
         }
 
         private MediaFormat ParseFormat(Format analysisFormat)
         {
             return new MediaFormat
             {
-                Duration = TimeSpan.Parse(analysisFormat.Duration ?? "0"),
+                Duration = MediaAnalysisUtils.ParseDuration(analysisFormat.Duration),
                 FormatName = analysisFormat.FormatName,
                 FormatLongName = analysisFormat.FormatLongName,
                 StreamCount = analysisFormat.NbStreams,
@@ -33,9 +28,6 @@ private MediaFormat ParseFormat(Format analysisFormat)
             };
         }
 
-        public string Path { get; }
-        public string Extension => System.IO.Path.GetExtension(Path);
-
         public TimeSpan Duration => new[]
         {
             Format.Duration,
@@ -44,9 +36,9 @@ private MediaFormat ParseFormat(Format analysisFormat)
         }.Max();
 
         public MediaFormat Format { get; }
-        public AudioStream PrimaryAudioStream { get; }
+        public AudioStream? PrimaryAudioStream => AudioStreams.OrderBy(stream => stream.Index).FirstOrDefault();
 
-        public VideoStream PrimaryVideoStream { get; }
+        public VideoStream? PrimaryVideoStream => VideoStreams.OrderBy(stream => stream.Index).FirstOrDefault();
 
         public List<VideoStream> VideoStreams { get; }
         public List<AudioStream> AudioStreams { get; }
@@ -56,14 +48,14 @@ private VideoStream ParseVideoStream(FFProbeStream stream)
             return new VideoStream
             {
                 Index = stream.Index,
-                AvgFrameRate = DivideRatio(ParseRatioDouble(stream.AvgFrameRate, '/')),
+                AvgFrameRate = MediaAnalysisUtils.DivideRatio(MediaAnalysisUtils.ParseRatioDouble(stream.AvgFrameRate, '/')),
-                BitRate = !string.IsNullOrEmpty(stream.BitRate) ? ParseIntInvariant(stream.BitRate) : default,
+                BitRate = !string.IsNullOrEmpty(stream.BitRate) ? MediaAnalysisUtils.ParseIntInvariant(stream.BitRate) : default,
-                BitsPerRawSample = !string.IsNullOrEmpty(stream.BitsPerRawSample) ? ParseIntInvariant(stream.BitsPerRawSample) : default,
+                BitsPerRawSample = !string.IsNullOrEmpty(stream.BitsPerRawSample) ? MediaAnalysisUtils.ParseIntInvariant(stream.BitsPerRawSample) : default,
                 CodecName = stream.CodecName,
                 CodecLongName = stream.CodecLongName,
-                DisplayAspectRatio = ParseRatioInt(stream.DisplayAspectRatio, ':'),
+                DisplayAspectRatio = MediaAnalysisUtils.ParseRatioInt(stream.DisplayAspectRatio, ':'),
-                Duration = ParseDuration(stream),
+                Duration = MediaAnalysisUtils.ParseDuration(stream),
-                FrameRate = DivideRatio(ParseRatioDouble(stream.FrameRate, '/')),
+                FrameRate = MediaAnalysisUtils.DivideRatio(MediaAnalysisUtils.ParseRatioDouble(stream.FrameRate, '/')),
                 Height = stream.Height ?? 0,
                 Width = stream.Width ?? 0,
                 Profile = stream.Profile,
@@ -74,57 +66,89 @@ private VideoStream ParseVideoStream(FFProbeStream stream)
             };
         }
 
-        private static TimeSpan ParseDuration(FFProbeStream ffProbeStream)
-        {
-            return !string.IsNullOrEmpty(ffProbeStream.Duration)
-                ? TimeSpan.Parse(ffProbeStream.Duration)
-                : TimeSpan.Parse(TrimTimeSpan(ffProbeStream.GetDuration()) ?? "0");
-        }
-
-        private static string? TrimTimeSpan(string? durationTag)
-        {
-            var durationMatch = DurationRegex.Match(durationTag ?? "");
-            return durationMatch.Success ? durationMatch.Groups[1].Value : null;
-        }
-
         private AudioStream ParseAudioStream(FFProbeStream stream)
         {
             return new AudioStream
             {
                 Index = stream.Index,
-                BitRate = !string.IsNullOrEmpty(stream.BitRate) ? ParseIntInvariant(stream.BitRate) : default,
+                BitRate = !string.IsNullOrEmpty(stream.BitRate) ? MediaAnalysisUtils.ParseIntInvariant(stream.BitRate) : default,
                 CodecName = stream.CodecName,
                 CodecLongName = stream.CodecLongName,
                 Channels = stream.Channels ?? default,
                 ChannelLayout = stream.ChannelLayout,
-                Duration = ParseDuration(stream),
+                Duration = MediaAnalysisUtils.ParseDuration(stream),
-                SampleRateHz = !string.IsNullOrEmpty(stream.SampleRate) ? ParseIntInvariant(stream.SampleRate) : default,
+                SampleRateHz = !string.IsNullOrEmpty(stream.SampleRate) ? MediaAnalysisUtils.ParseIntInvariant(stream.SampleRate) : default,
                 Profile = stream.Profile,
                 Language = stream.GetLanguage(),
                 Tags = stream.Tags,
             };
         }
 
-        private static double DivideRatio((double, double) ratio) => ratio.Item1 / ratio.Item2;
 
-        private static (int, int) ParseRatioInt(string input, char separator)
+    }
+
+    public static class MediaAnalysisUtils
+    {
+        private static readonly Regex DurationRegex = new Regex(@"^(\d+):(\d{1,2}):(\d{1,2})\.(\d{1,3})", RegexOptions.Compiled);
+
+        public static double DivideRatio((double, double) ratio) => ratio.Item1 / ratio.Item2;
+
+        public static (int, int) ParseRatioInt(string input, char separator)
         {
             if (string.IsNullOrEmpty(input)) return (0, 0);
             var ratio = input.Split(separator);
             return (ParseIntInvariant(ratio[0]), ParseIntInvariant(ratio[1]));
         }
 
-        private static (double, double) ParseRatioDouble(string input, char separator)
+        public static (double, double) ParseRatioDouble(string input, char separator)
         {
             if (string.IsNullOrEmpty(input)) return (0, 0);
             var ratio = input.Split(separator);
             return (ratio.Length > 0 ? ParseDoubleInvariant(ratio[0]) : 0, ratio.Length > 1 ? ParseDoubleInvariant(ratio[1]) : 0);
         }
 
-        private static double ParseDoubleInvariant(string line) =>
+        public static double ParseDoubleInvariant(string line) =>
             double.Parse(line, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture);
 
-        private static int ParseIntInvariant(string line) =>
+        public static int ParseIntInvariant(string line) =>
             int.Parse(line, System.Globalization.NumberStyles.Any, System.Globalization.CultureInfo.InvariantCulture);
+        
+        
+        public static TimeSpan ParseDuration(string duration)
+        {
+            if (!string.IsNullOrEmpty(duration))
+            {
+                var match = DurationRegex.Match(duration);
+                if (match.Success)
+                {
+                    // ffmpeg may provide < 3-digit number of milliseconds (omitting trailing zeros), which won't simply parse correctly
+                    // e.g. 00:12:02.11 -> 12 minutes 2 seconds and 110 milliseconds
+                    var millisecondsPart = match.Groups[4].Value;
+                    if (millisecondsPart.Length < 3)
+                    {
+                        millisecondsPart = millisecondsPart.PadRight(3, '0');
+                    }
+
+                    var hours = int.Parse(match.Groups[1].Value);
+                    var minutes = int.Parse(match.Groups[2].Value);
+                    var seconds = int.Parse(match.Groups[3].Value);
+                    var milliseconds = int.Parse(millisecondsPart);
+                    return new TimeSpan(0, hours, minutes, seconds, milliseconds);
+                }
+                else
+                {
+                    return TimeSpan.Zero;
+                }
+            }
+            else
+            {
+                return TimeSpan.Zero;
+            }
+        }
+
+        public static TimeSpan ParseDuration(FFProbeStream ffProbeStream)
+        {
+            return ParseDuration(ffProbeStream.Duration);
+        }
     }
 }

FFMpegCore/GlobalFFOptions.cs

@@ -0,0 +1,52 @@
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Text.Json;
+
+namespace FFMpegCore
+{
+    public static class GlobalFFOptions
+    {
+        private static readonly string ConfigFile = "ffmpeg.config.json";
+
+        public static FFOptions Current { get; private set; }
+        static GlobalFFOptions()
+        {
+            if (File.Exists(ConfigFile))
+            {
+                Current = JsonSerializer.Deserialize<FFOptions>(File.ReadAllText(ConfigFile))!;
+            }
+            else
+            {
+                Current = new FFOptions();
+            }
+        }
+        
+        public static void Configure(Action<FFOptions> optionsAction)
+        {
+            optionsAction?.Invoke(Current);
+        }
+        public static void Configure(FFOptions ffOptions)
+        {
+            Current = ffOptions ?? throw new ArgumentNullException(nameof(ffOptions));
+        }
+        
+
+        public static string GetFFMpegBinaryPath(FFOptions? ffOptions = null) => GetFFBinaryPath("FFMpeg", ffOptions ?? Current);
+
+        public static string GetFFProbeBinaryPath(FFOptions? ffOptions = null) => GetFFBinaryPath("FFProbe", ffOptions ?? Current);
+
+        private static string GetFFBinaryPath(string name, FFOptions ffOptions)
+        {
+            var ffName = name.ToLowerInvariant();
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+                ffName += ".exe";
+
+            var target = Environment.Is64BitProcess ? "x64" : "x86";
+            if (Directory.Exists(Path.Combine(ffOptions.BinaryFolder, target)))
+                ffName = Path.Combine(target, ffName);
+
+            return Path.Combine(ffOptions.BinaryFolder, ffName);
+        }
+    }
+}

FFMpegCore/Helpers/FFMpegHelper.cs

@@ -11,21 +11,15 @@ public static class FFMpegHelper
         private static bool _ffmpegVerified;
 
         public static void ConversionSizeExceptionCheck(Image image)
-        {
+            => ConversionSizeExceptionCheck(image.Size.Width, image.Size.Height);
-            ConversionSizeExceptionCheck(image.Size);
-        }
 
         public static void ConversionSizeExceptionCheck(IMediaAnalysis info)
-        {
+            => ConversionSizeExceptionCheck(info.PrimaryVideoStream!.Width, info.PrimaryVideoStream.Height);
-            ConversionSizeExceptionCheck(new Size(info.PrimaryVideoStream.Width, info.PrimaryVideoStream.Height));
-        }
 
-        private static void ConversionSizeExceptionCheck(Size size)
+        private static void ConversionSizeExceptionCheck(int width, int height)
         {
-            if (size.Height % 2 != 0 || size.Width % 2 != 0 )
+            if (height % 2 != 0 || width % 2 != 0 )
-            {
                 throw new ArgumentException("FFMpeg yuv420p encoding requires the width and height to be a multiple of 2!");
-            }
         }
 
         public static void ExtensionExceptionCheck(string filename, string extension)
@@ -37,17 +31,17 @@ public static void ExtensionExceptionCheck(string filename, string extension)
 
         public static void RootExceptionCheck()
         {
-            if (FFMpegOptions.Options.RootDirectory == null)
+            if (GlobalFFOptions.Current.BinaryFolder == null)
-                throw new FFMpegException(FFMpegExceptionType.Dependency,
+                throw new FFOptionsException("FFMpeg root is not configured in app config. Missing key 'BinaryFolder'.");
-                    "FFMpeg root is not configured in app config. Missing key 'ffmpegRoot'.");
         }
         
-        public static void VerifyFFMpegExists()
+        public static void VerifyFFMpegExists(FFOptions ffMpegOptions)
         {
             if (_ffmpegVerified) return;
-            var (exitCode, _) = Instance.Finish(FFMpegOptions.Options.FFmpegBinary(), "-version");
+            var (exitCode, _) = Instance.Finish(GlobalFFOptions.GetFFMpegBinaryPath(ffMpegOptions), "-version");
             _ffmpegVerified = exitCode == 0;
-            if (!_ffmpegVerified) throw new FFMpegException(FFMpegExceptionType.Operation, "ffmpeg was not found on your system");
+            if (!_ffmpegVerified) 
+                throw new FFMpegException(FFMpegExceptionType.Operation, "ffmpeg was not found on your system");
         }
     }
 }

FFMpegCore/Helpers/FFProbeHelper.cs

@@ -20,18 +20,17 @@ public static int Gcd(int first, int second)
 
         public static void RootExceptionCheck()
         {
-            if (FFMpegOptions.Options.RootDirectory == null)
+            if (GlobalFFOptions.Current.BinaryFolder == null)
-                throw new FFMpegException(FFMpegExceptionType.Dependency,
+                throw new FFOptionsException("FFProbe root is not configured in app config. Missing key 'BinaryFolder'.");
-                    "FFProbe root is not configured in app config. Missing key 'ffmpegRoot'.");
-            
         }
         
-        public static void VerifyFFProbeExists()
+        public static void VerifyFFProbeExists(FFOptions ffMpegOptions)
         {
             if (_ffprobeVerified) return;
-            var (exitCode, _) = Instance.Finish(FFMpegOptions.Options.FFProbeBinary(), "-version");
+            var (exitCode, _) = Instance.Finish(GlobalFFOptions.GetFFProbeBinaryPath(ffMpegOptions), "-version");
             _ffprobeVerified = exitCode == 0;
-            if (!_ffprobeVerified) throw new FFMpegException(FFMpegExceptionType.Operation, "ffprobe was not found on your system");
+            if (!_ffprobeVerified) 
+                throw new FFProbeException("ffprobe was not found on your system");
         }
     }
 }

README.md

@@ -22,11 +22,11 @@ A .NET Standard FFMpeg/FFProbe wrapper for easily integrating media analysis and
 FFProbe is used to gather media information:
 
 ```csharp
-var mediaInfo = FFProbe.Analyse(inputFile);
+var mediaInfo = FFProbe.Analyse(inputPath);
 ```
 or 
 ```csharp
-var mediaInfo = await FFProbe.AnalyseAsync(inputFile);
+var mediaInfo = await FFProbe.AnalyseAsync(inputPath);
 ```
 
 
@@ -43,20 +43,19 @@ FFMpegArguments
         .WithConstantRateFactor(21)
         .WithAudioCodec(AudioCodec.Aac)
         .WithVariableBitrate(4)
-        .WithFastStart()
+        .WithVideoFilters(filterOptions => filterOptions
-        .Scale(VideoSize.Hd))
+            .Scale(VideoSize.Hd))
+        .WithFastStart())
     .ProcessSynchronously();
 ```
 
 Easily capture screens from your videos:
 ```csharp
-var mediaFileAnalysis = FFProbe.Analyse(inputPath);
-
 // process the snapshot in-memory and use the Bitmap directly
-var bitmap = FFMpeg.Snapshot(mediaFileAnalysis, new Size(200, 400), TimeSpan.FromMinutes(1));
+var bitmap = FFMpeg.Snapshot(inputPath, new Size(200, 400), TimeSpan.FromMinutes(1));
 
 // or persists the image on the drive
-FFMpeg.Snapshot(mediaFileAnalysis, outputPath, new Size(200, 400), TimeSpan.FromMinutes(1))
+FFMpeg.Snapshot(inputPath, outputPath, new Size(200, 400), TimeSpan.FromMinutes(1));
 ```
 
 Convert to and/or from streams
@@ -89,25 +88,25 @@ FFMpeg.JoinImageSequence(@"..\joined_video.mp4", frameRate: 1,
 
 Mute videos:
 ```csharp
-FFMpeg.Mute(inputFilePath, outputFilePath);
+FFMpeg.Mute(inputPath, outputPath);
 ```
 
 Save audio track from video:
 ```csharp
-FFMpeg.ExtractAudio(inputVideoFilePath, outputAudioFilePath);
+FFMpeg.ExtractAudio(inputPath, outputPath);
 ```
 
 Add or replace audio track on video:
 ```csharp
-FFMpeg.ReplaceAudio(inputVideoFilePath, inputAudioFilePath, outputVideoFilePath);
+FFMpeg.ReplaceAudio(inputPath, inputAudioPath, outputPath);
 ```
 
 Add poster image to audio file (good for youtube videos):
 ```csharp
-FFMpeg.PosterWithAudio(inputImageFilePath, inputAudioFilePath, outputVideoFilePath);
+FFMpeg.PosterWithAudio(inputPath, inputAudioPath, outputPath);
 // or
-var image = Image.FromFile(inputImageFile);
+var image = Image.FromFile(inputImagePath);
-image.AddAudio(inputAudioFilePath, outputVideoFilePath);
+image.AddAudio(inputAudioPath, outputPath);
 ```
 
 Other available arguments could be found in `FFMpegCore.Arguments` namespace.
@@ -135,10 +134,11 @@ var videoFramesSource = new RawVideoPipeSource(CreateFrames(64)) //pass IEnumera
 {
     FrameRate = 30 //set source frame rate
 };
-FFMpegArguments
+await FFMpegArguments
-    .FromPipeInput(videoFramesSource, <input_stream_options>)
+    .FromPipeInput(videoFramesSource)
-    .OutputToFile("temporary.mp4", false, <output_options>)
+    .OutputToFile(outputPath, false, options => options
-    .ProcessSynchronously();
+        .WithVideoCodec(VideoCodec.LibVpx))
+    .ProcessAsynchronously();
 ```
 
 if you want to use `System.Drawing.Bitmap` as `IVideoFrame`, there is a `BitmapVideoFrameWrapper` wrapper class.
@@ -179,13 +179,19 @@ If these folders are not defined, it will try to find the binaries in `/root/(ff
 
 #### Option 1
 
-The default value (`\\FFMPEG\\bin`) can be overwritten via the `FFMpegOptions` class:
+The default value of an empty string (expecting ffmpeg to be found through PATH) can be overwritten via the `FFOptions` class:
 
 ```c#
-public Startup() 
+// setting global options
-{
+GlobalFFOptions.Configure(new FFOptions { BinaryFolder = "./bin", TemporaryFilesFolder = "/tmp" });
-    FFMpegOptions.Configure(new FFMpegOptions { RootDirectory = "./bin", TempDirectory = "/tmp" });
+// or
-}
+GlobalFFOptions.Configure(options => options.BinaryFolder = "./bin");
+
+// or individual, per-run options
+await FFMpegArguments
+    .FromFileInput(inputPath)
+    .OutputToFile(outputPath)
+    .ProcessAsynchronously(true, new FFOptions { BinaryFolder = "./bin", TemporaryFilesFolder = "/tmp" });
 ```
 
 #### Option 2
@@ -194,8 +200,8 @@ The root and temp directory for the ffmpeg binaries can be configured via the `f
 
 ```json
 {
-  "RootDirectory": "./bin",
+  "BinaryFolder": "./bin",
-  "TempDirectory": "/tmp"
+  "TemporaryFilesFolder": "/tmp"
 }
 ```
 
@@ -217,6 +223,6 @@ The root and temp directory for the ffmpeg binaries can be configured via the `f
 
 ### License
 
-Copyright © 2020 
+Copyright © 2021
 
 Released under [MIT license](https://github.com/rosenbjerg/FFMpegCore/blob/master/LICENSE)