FFMpegCore/FFMpegCore.Test/AudioTest.cs

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C#
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using System;
using FFMpegCore.Enums;
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using FFMpegCore.Test.Resources;
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using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
using FFMpegCore.Pipes;
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namespace FFMpegCore.Test
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{
[TestClass]
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public class AudioTest
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{
[TestMethod]
public void Audio_Remove()
{
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using var outputFile = new TemporaryFile("out.mp4");
FFMpeg.Mute(TestResources.Mp4Video, outputFile);
var analysis = FFProbe.Analyse(outputFile);
Assert.IsTrue(analysis.VideoStreams.Any());
Assert.IsTrue(!analysis.AudioStreams.Any());
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}
[TestMethod]
public void Audio_Save()
{
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using var outputFile = new TemporaryFile("out.mp3");
FFMpeg.ExtractAudio(TestResources.Mp4Video, outputFile);
var analysis = FFProbe.Analyse(outputFile);
Assert.IsTrue(!analysis.VideoStreams.Any());
Assert.IsTrue(analysis.AudioStreams.Any());
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}
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[TestMethod]
public async Task Audio_FromRaw()
{
await using var file = File.Open(VideoLibrary.LocalAudioRaw.FullName, FileMode.Open);
var memoryStream = new MemoryStream();
await FFMpegArguments
.FromPipeInput(new StreamPipeSource(file), options => options.ForceFormat("s16le"))
.OutputToPipe(new StreamPipeSink(memoryStream), options =>
{
options.WithAudioSamplingRate(48000);
options.WithAudioCodec("libopus");
options.WithCustomArgument("-ac 2");
options.ForceFormat("opus");
})
.ProcessAsynchronously();
}
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[TestMethod]
public void Audio_Add()
{
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using var outputFile = new TemporaryFile("out.mp4");
var success = FFMpeg.ReplaceAudio(TestResources.Mp4WithoutAudio, TestResources.Mp3Audio, outputFile);
var videoAnalysis = FFProbe.Analyse(TestResources.Mp4WithoutAudio);
var audioAnalysis = FFProbe.Analyse(TestResources.Mp3Audio);
var outputAnalysis = FFProbe.Analyse(outputFile);
Assert.IsTrue(success);
Assert.AreEqual(Math.Max(videoAnalysis.Duration.TotalSeconds, audioAnalysis.Duration.TotalSeconds), outputAnalysis.Duration.TotalSeconds, 0.15);
Assert.IsTrue(File.Exists(outputFile));
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}
[TestMethod]
public void Image_AddAudio()
{
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using var outputFile = new TemporaryFile("out.mp4");
FFMpeg.PosterWithAudio(TestResources.PngImage, TestResources.Mp3Audio, outputFile);
var analysis = FFProbe.Analyse(TestResources.Mp3Audio);
Assert.IsTrue(analysis.Duration.TotalSeconds > 0);
Assert.IsTrue(File.Exists(outputFile));
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}
}
}