# FFMpegCore [![CI](https://github.com/rosenbjerg/FFMpegCore/workflows/CI/badge.svg)](https://github.com/rosenbjerg/FFMpegCore/actions?query=workflow%3ACI) [![NuGet Badge](https://buildstats.info/nuget/FFMpegCore)](https://www.nuget.org/packages/FFMpegCore/) [![GitHub issues](https://img.shields.io/github/issues/rosenbjerg/FFMpegCore)](https://github.com/rosenbjerg/FFMpegCore/issues) [![GitHub stars](https://img.shields.io/github/stars/rosenbjerg/FFMpegCore)](https://github.com/rosenbjerg/FFMpegCore/stargazers) [![GitHub](https://img.shields.io/github/license/rosenbjerg/FFMpegCore)](https://github.com/rosenbjerg/FFMpegCore/blob/master/LICENSE) # Setup #### NuGet: ``` Install-Package FFMpegCore ``` A .NET Standard FFMpeg/FFProbe wrapper for easily integrating media analysis and conversion into your C# applications. Support both synchronous and asynchronous use # API ## FFProbe FFProbe is used to gather media information: ```csharp var mediaInfo = FFProbe.Analyse(inputFile); ``` or ```csharp var mediaInfo = await FFProbe.AnalyseAsync(inputFile); ``` ## FFMpeg FFMpeg is used for converting your media files to web ready formats. Easily build your FFMpeg arguments using the fluent argument builder: Convert input file to h264/aac scaled to 720p w/ faststart, for web playback ```csharp FFMpegArguments .FromFileInput(inputPath) .OutputToFile(outputPath, false, options => options .WithVideoCodec(VideoCodec.LibX264) .WithConstantRateFactor(21) .WithAudioCodec(AudioCodec.Aac) .WithVariableBitrate(4) .WithFastStart() .Scale(VideoSize.Hd)) .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)); // or persists the image on the drive FFMpeg.Snapshot(mediaFileAnalysis, outputPath, new Size(200, 400), TimeSpan.FromMinutes(1)) ``` Convert to and/or from streams ```csharp await FFMpegArguments .FromPipeInput(new StreamPipeSource(inputStream)) .OutputToPipe(new StreamPipeSink(outputStream), options => options .WithVideoCodec("vp9") .ForceFormat("webm")) .ProcessAsynchronously(); ``` Join video parts into one single file: ```csharp FFMpeg.Join(@"..\joined_video.mp4", @"..\part1.mp4", @"..\part2.mp4", @"..\part3.mp4" ); ``` Join images into a video: ```csharp FFMpeg.JoinImageSequence(@"..\joined_video.mp4", frameRate: 1, ImageInfo.FromPath(@"..\1.png"), ImageInfo.FromPath(@"..\2.png"), ImageInfo.FromPath(@"..\3.png") ); ``` Mute videos: ```csharp FFMpeg.Mute(inputFilePath, outputFilePath); ``` Save audio track from video: ```csharp FFMpeg.ExtractAudio(inputVideoFilePath, outputAudioFilePath); ``` Add or replace audio track on video: ```csharp FFMpeg.ReplaceAudio(inputVideoFilePath, inputAudioFilePath, outputVideoFilePath); ``` Add poster image to audio file (good for youtube videos): ```csharp FFMpeg.PosterWithAudio(inputImageFilePath, inputAudioFilePath, outputVideoFilePath); // or var image = Image.FromFile(inputImageFile); image.AddAudio(inputAudioFilePath, outputVideoFilePath); ``` Other available arguments could be found in `FFMpegCore.Arguments` namespace. ### Input piping With input piping it is possible to write video frames directly from program memory without saving them to jpeg or png and then passing path to input of ffmpeg. This feature also allows us to convert video on-the-fly while frames are being generated or received. The `IPipeSource` interface is used as the source of data. It could be represented as encoded video stream or raw frames stream. Currently, the `IPipeSource` interface has single implementation, `RawVideoPipeSource` that is used for raw stream encoding. For example: Method that is generating bitmap frames: ```csharp IEnumerable CreateFrames(int count) { for(int i = 0; i < count; i++) { yield return GetNextFrame(); //method of generating new frames } } ``` Then create `ArgumentsContainer` with `InputPipeArgument` ```csharp var videoFramesSource = new RawVideoPipeSource(CreateFrames(64)) //pass IEnumerable or IEnumerator to constructor of RawVideoPipeSource { FrameRate = 30 //set source frame rate }; FFMpegArguments .FromPipeInput(videoFramesSource, ) .OutputToFile("temporary.mp4", false, ) .ProcessSynchronously(); ``` if you want to use `System.Drawing.Bitmap` as `IVideoFrame`, there is a `BitmapVideoFrameWrapper` wrapper class. ## Binaries If you prefer to manually download them, visit [ffbinaries](https://ffbinaries.com/downloads) or [zeranoe Windows builds](https://ffmpeg.zeranoe.com/builds/). #### Windows command: `choco install ffmpeg -Y` location: `C:\ProgramData\chocolatey\lib\ffmpeg\tools\ffmpeg\bin` #### Mac OSX command: `brew install ffmpeg mono-libgdiplus` location: `/usr/local/bin` #### Ubuntu command: `sudo apt-get install -y ffmpeg libgdiplus` location: `/usr/bin` ## Path Configuration #### Behavior If you wish to support multiple client processor architectures, you can do so by creating a folder `x64` and `x86` in the `root` directory. Both folders should contain the binaries (`ffmpeg.exe` and `ffprobe.exe`) for build for the respective architectures. By doing so, the library will attempt to use either `/root/{ARCH}/(ffmpeg|ffprobe).exe`. If these folders are not defined, it will try to find the binaries in `/root/(ffmpeg|ffprobe.exe)` #### Option 1 The default value (`\\FFMPEG\\bin`) can be overwritten via the `FFMpegOptions` class: ```c# public Startup() { FFMpegOptions.Configure(new FFMpegOptions { RootDirectory = "./bin", TempDirectory = "/tmp" }); } ``` #### Option 2 The root and temp directory for the ffmpeg binaries can be configured via the `ffmpeg.config.json` file. ```json { "RootDirectory": "./bin", "TempDirectory": "/tmp" } ``` # Compatibility Some versions of FFMPEG might not have the same argument schema. The lib has been tested with version `3.3` to `4.2` ## Contributors