如何在C# 中使用 FFmpeg.NET

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PM> Install-Package xFFmpeg.NET

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var inputFile = new MediaFile (@"C:PathTo_Video.flv");
var outputFile = new MediaFile (@"C:PathTo_Save_Image.jpg");
 
var ffmpeg = new Engine("C:\ffmpeg\ffmpeg.exe");
// 保存位于视频第 15 秒的帧。
var options = new ConversionOptions { Seek = TimeSpan.FromSeconds(15) };
await ffmpeg.GetThumbnailAsync(inputFile, outputFile, options);

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var inputFile = new MediaFile (@"C:PathTo_Video.flv");
 
var ffmpeg = new Engine("C:\ffmpeg\ffmpeg.exe");
var metadata = await ffmpeg.GetMetadataAsync(inputFile);
 
Console.WriteLine(metadata.Duration);

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var inputFile = new MediaFile (@"C:PathTo_Video.flv");
var outputFile = new MediaFile (@"C:PathTo_Save_New_Video.mp4");
 
var ffmpeg = new Engine("C:\ffmpeg\ffmpeg.exe");
await ffmpeg.ConvertAsync(inputFile, outputFile);

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var inputFile = new MediaFile (@"C:PathTo_Video.flv");
var outputFile = new MediaFile (@"C:PathTo_Save_New_DVD.vob");
 
var conversionOptions = new ConversionOptions
{
    Target = Target.DVD,
    TargetStandard = TargetStandard.PAL
};
 
var ffmpeg = new Engine("C:\ffmpeg\ffmpeg.exe");
await ffmpeg.ConvertAsync(inputFile, outputFile, conversionOptions);

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var inputFile = new MediaFile (@"C:PathTo_Video.flv");
var outputFile = new MediaFile (@"C:PathTo_Save_New_Video.mp4");
 
var conversionOptions = new ConversionOptions
{
    MaxVideoDuration = TimeSpan.FromSeconds(30),
    VideoAspectRatio = VideoAspectRatio.R16_9,
    VideoSize = VideoSize.Hd1080,
    AudioSampleRate = AudioSampleRate.Hz44100
};
 
var ffmpeg = new Engine("C:\ffmpeg\ffmpeg.exe");
await ffmpeg.ConvertAsync(inputFile, outputFile, conversionOptions);

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var inputFile = new MediaFile (@"C:PathTo_Video.flv");
var outputFile = new MediaFile (@"C:PathTo_Save_ExtractedVideo.flv");
 
var ffmpeg = new Engine("C:\ffmpeg\ffmpeg.exe");
var options = new ConversionOptions();
 
options.CutMedia(TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(25));
await ffmpeg.ConvertAsync(inputFile, outputFile, options);