//音视频合成
public static async Task <string> addaudio(string videoPath, string audioPath)
{
string outputPath = Path.ChangeExtension(Path.GetTempFileName(), ".mp4");
await Conversion.AddAudio(videoPath, audioPath, outputPath).Start();
return(outputPath);
}
/// <summary>
/// Extrahiert das Audio aus dem nicht adaptiven Video und fügt es mit dem adaptiven Video zusammen
/// </summary>
/// <param name="inputAudioVideo">Nicht adaptives Video, was das Audio enthält</param>
/// <param name="inputVideo">Adaptives Video, mit dem das Audio kombiniert werden soll</param>
/// <param name="output">Ausgabedatei für das Ergebnis</param>
/// <param name="workDir">Aktuelles Verzeichnis (um eine temporäre Datei anzulegen)</param>
private async void MergeConversion(string inputAudioVideo, string inputVideo, string output, string workDir)
{
string tempAudioFile = workDir + "temp.mp3";
await FFmpeg.GetLatestVersion();
await Conversion.ExtractAudio(inputAudioVideo, tempAudioFile).Start();
await Conversion.AddAudio(inputVideo, tempAudioFile, output).Start();
}
internal void AddAudioToVideo()
{
///TODO write progress
///TODO move this away from FFMpeg to native
//Concat the audio and video
var tempAudio = options.temp_dir + @"\" + "finalAudio.wav";
var conv = Conversion.AddAudio(tempVideo, tempAudio, options.output_file);
conv.Start().Wait();
}
public async Task AddAudio()
{
string output = Path.ChangeExtension(Path.GetTempFileName(), FileExtensions.Mp4);
IConversionResult result = await Conversion.AddAudio(Resources.Mp4, Resources.Mp3, output)
.Start().ConfigureAwait(false);
Assert.True(result.Success);
IMediaInfo mediaInfo = await MediaInfo.Get(output).ConfigureAwait(false);
Assert.Single(mediaInfo.AudioStreams);
Assert.Equal("aac", mediaInfo.AudioStreams.First()
.Format);
Assert.Single(mediaInfo.VideoStreams);
Assert.Equal(TimeSpan.FromSeconds(13), mediaInfo.Duration);
}