在C中分割四个文件中的视频＃

Question

我正在研究如何将视频分成四个片段。我见过很多解决方案和库。我一直在寻找这个库：

https://github.com/AydinAdn/MediaToolkit

这是分裂的视频

var inputFile = new MediaFile {Filename = @"C:\Path\To_Video.flv"}; 
var outputFile = new MediaFile {Filename = @"C:\Path\To_Save_ExtractedVideo.flv"}; 

using (var engine = new Engine()) 
{ 
    engine.GetMetadata(inputFile); 

    var options = new ConversionOptions(); 

    // This example will create a 25 second video, starting from the 
    // 30th second of the original video. 
    //// First parameter requests the starting frame to cut the media from. 
    //// Second parameter requests how long to cut the video. 
    options.CutMedia(TimeSpan.FromSeconds(30), TimeSpan.FromSeconds(25)); 

    engine.Convert(inputFile, outputFile, options); 
} 

的代码分裂只是一个片段的代码。有没有办法将它分成四部分？

亲切的问候

PS：该解决方案必须是C＃和已经看到了Directshow的解决方案。

Answer 1

我以前没有使用过这个库，但这是我如何去做的。

---

var inputFile = new MediaFile {Filename = @"C:\Path\To_Video.flv"}; 
var outputName = "C:\Path\To_Save_ExtractedVideo"; 
var outputExtension = ".flv"; 

double t = inputFile.Length/4; //length of parts -- need to use method to get file playtime length 

for(int i=0;i<4;i++){ 

    var engine = new Engine() 
    engine.GetMetadata(inputFile); 

    var options = new ConversionOptions(); 

    // This example will create a 25 second video, starting from the 
    // 30th second of the original video. 
    //// First parameter requests the starting frame to cut the media from. 
    //// Second parameter requests how long to cut the video. 
    options.CutMedia(TimeSpan.FromSeconds(30 + (i*int.Parse(t))), TimeSpan.FromSeconds((i+1)*int.Parse(t))); 

    engine.Convert(inputFile, $"{outputName}_{i.ToString()}{outputExtension}, options); 

    engine.Destroy(); // Need to destroy object or close inputstream. Whichever the library offers 

    } 
}