/// <summary>
/// Extracts the audio stream from specified file.
/// </summary>
/// <param name="source">The media file to extract from.</param>
/// <param name="destination">The destination file.</param>
/// <param name="options">The options for starting the process.</param>
/// <returns>The process completion status.</returns>
public static CompletionStatus ExtractAudio(string source, string destination, ProcessStartOptions options)
{
File.Delete(destination);
FFmpegProcess Worker = new FFmpeg.FFmpegProcess(options);
return(Worker.RunFFmpeg(string.Format(@"-y -i ""{0}"" -vn -acodec copy ""{1}""", source, destination)));
}
/// <summary>
/// Gets file streams information of specified file via FFmpeg.
/// </summary>
/// <param name="source">The file to get information about.</param>
/// <param name="options">The options for starting the process.</param>
/// <returns>A FFmpegProcess object containing the file information.</returns>
public static FFmpegProcess GetFileInfo(string source, ProcessStartOptions options)
{
FFmpegProcess Worker = new FFmpeg.FFmpegProcess(options);
Worker.RunFFmpeg(string.Format(@"-i ""{0}""", source));
return(Worker);
}
/// <summary>
/// Returns the version information from FFmpeg.
/// </summary>
/// <param name="options">The options for starting the process.</param>
/// <returns>A FFmpegProcess object containing the version information.</returns>
public static FFmpegProcess GetVersion(ProcessStartOptions options)
{
FFmpegProcess Worker = new FFmpeg.FFmpegProcess(options);
Worker.RunFFmpeg("-version", ProcessOutput.Standard);
return(Worker);
}
/// <summary>
/// Returns the exact frame count of specified video file.
/// </summary>
/// <param name="source">The file to get information about.</param>
/// <param name="options">The options for starting the process.</param>
/// <returns>The number of frames in the video.</returns>
public static long GetFrameCount(string source, ProcessStartOptions options)
{
long Result = 0;
FFmpegProcess Worker = new FFmpeg.FFmpegProcess(options);
Worker.StatusUpdated += (sender, e) => {
Result = e.Status.Frame;
};
Worker.RunFFmpeg(string.Format(@"-i ""{0}"" -f null /dev/null", source));
return(Result);
}
/// <summary>
/// Encodes a media file with specified arguments.
/// </summary>
/// <param name="source">The file to convert.</param>
/// <param name="videoCodec">The codec(s) to use to encode the video stream(s).</param>
/// <param name="audioCodec">The codec(s) to use to encode the audio stream(s).</param>
/// <param name="encodeArgs">Additional arguments to pass to FFmpeg.</param>
/// <param name="destination">The destination file.</param>
/// <param name="options">The options for starting the process.</param>
/// <returns>The process completion status.</returns>
public static CompletionStatus Encode(string source, string[] videoCodec, string[] audioCodec, string encodeArgs, string destination, ProcessStartOptions options)
{
File.Delete(destination);
StringBuilder Query = new StringBuilder();
Query.Append("-y -i ");
// AviSynth source will pipe through Avs2Yuv into FFmpeg.
bool SourceAvisynth = source.ToLower().EndsWith(".avs");
if (SourceAvisynth)
{
Query.Append("-"); // Pipe source
}
else
{
Query.Append("\"");
Query.Append(source);
Query.Append("\"");
}
// Add video codec.
if (videoCodec == null || videoCodec.Length == 0)
{
Query.Append(" -vn");
}
else if (videoCodec.Length == 1)
{
Query.Append(" -vcodec ");
Query.Append(videoCodec[0]);
}
else
{
for (int i = 0; i < videoCodec.Length; i++)
{
Query.Append(" -vcodec:");
Query.Append(i);
Query.Append(" ");
Query.Append(videoCodec[i]);
}
}
// Add audio codec.
if (audioCodec == null || audioCodec.Length == 0)
{
Query.Append(" -an");
}
else if (audioCodec.Length == 1)
{
Query.Append(" -acodec ");
Query.Append(audioCodec[0]);
}
else
{
for (int i = 0; i < audioCodec.Length; i++)
{
Query.Append(" -acodec:");
Query.Append(i);
Query.Append(" ");
Query.Append(audioCodec[i]);
}
}
if (!string.IsNullOrEmpty(encodeArgs))
{
Query.Append(" ");
Query.Append(encodeArgs);
}
Query.Append(" \"");
Query.Append(destination);
Query.Append("\"");
// Run FFmpeg with query.
FFmpegProcess Worker = new FFmpeg.FFmpegProcess(options);
CompletionStatus Result = SourceAvisynth ?
Worker.RunAvisynthToFFmpeg(source, Query.ToString()) :
Worker.RunFFmpeg(Query.ToString());
return(Result);
}
