public async Task <IFile> ExtractAsync(IFile videoFile)
{
if (videoFile == null)
{
throw new ArgumentNullException(nameof(videoFile));
}
if (videoFile.StorageType != StorageType.FileSystem)
{
throw new Exception("FFMpeg can work only with file on FileSystem");
}
//get full path for audio
string audioFullpath = Path.Combine(
_fileResolver.GetAudioFolderPath(StorageType.FileSystem),
videoFile.Filename + "." + _audioOptions.Value.DefaultFormat);
//get video
string videofilePath = _fileResolver.VideoFilePath(videoFile.Filename, videoFile.Extension, StorageType.FileSystem);
if (File.Exists(audioFullpath))
{
File.Delete(audioFullpath);
}
//extract audio from video
var ffMpeg = new FFMpegConverter();
ffMpeg.LogReceived += FfMpeg_LogReceived;
ffMpeg.Invoke(
string.Format(FFMpegExtractAudioFormat,
videofilePath,
_audioOptions.Value.DefaultFormat,
_audioOptions.Value.BitRate,
audioFullpath));
var cancellationTokenSource = new CancellationTokenSource();
//delete video
File.Delete(videofilePath);
try
{
await Task.Delay(10000, _cancellationTokenSource.Token);
} catch (TaskCanceledException)
{
//do nothing cancel it okey
}
//return info about audio file
return(new PCFile()
{
Filename = videoFile.Filename,
Extension = "." + _audioOptions.Value.DefaultFormat,
Duration = _duration,
StorageType = StorageType.FileSystem,
});
}
public async Task <IFile> ExtractAsync(IFile videoFile)
{
if (videoFile == null)
{
throw new ArgumentNullException(nameof(videoFile));
}
if (videoFile.StorageType != StorageType.FileSystem)
{
throw new Exception("FFMpeg can work only with file on FileSystem");
}
//get full path for audio
var audioFullpath = Path.Combine(
_fileResolver.GetAudioFolderPath(StorageType.FileSystem),
videoFile.Filename + "." + _audioOptions.Value.DefaultFormat);
//get video
var videofilePath = _fileResolver.VideoFilePath(videoFile.Filename, videoFile.Extension, StorageType.FileSystem);
if (File.Exists(audioFullpath))
{
File.Delete(audioFullpath);
}
//extract audio from video
var ffMpeg = new FFmpegProcess();
ffMpeg.RunFFmpeg(string.Format(FFMpegExtractAudioFormat,
videofilePath,
_audioOptions.Value.DefaultFormat,
_audioOptions.Value.BitRate,
audioFullpath));
//delete video
File.Delete(videofilePath);
var match = FindDurationRegex.Match(ffMpeg.Output);
if (match.Success)
{
_duration = int.Parse(match.Groups[1].Value) * 3600 +
int.Parse(match.Groups[2].Value) * 60 +
int.Parse(match.Groups[3].Value) +
int.Parse(match.Groups[4].Value) / 100.0;
}
//return info about audio file
return(new PCFile
{
Filename = videoFile.Filename,
Extension = "." + _audioOptions.Value.DefaultFormat,
Duration = _duration,
StorageType = StorageType.FileSystem
});
}