public static CommandStage Select <TStreamType>(this FFmpegCommand command, int index)
where TStreamType : class, IStream
{
var streamId = command.StreamIdentifier <TStreamType>(index);
return(command.Select(streamId));
}
public static CommandStage Take(this FFmpegCommand command, int index)
{
var streamId = command.StreamIdentifier(index);
return(command.Select(streamId));
}