/// <summary>
/// Creates a new instance of <see cref="FFMpegWriter"/>.
/// </summary>
public FFMpegWriter(FFMpegVideoWriterArgs Args)
{
var settings = ServiceProvider.Get <Settings>();
_videoBuffer = new byte[Args.ImageProvider.Width * Args.ImageProvider.Height * 4];
var audioPipeName = GetPipeName();
var videoPipeName = GetPipeName();
var videoInArgs = $"-framerate {Args.FrameRate} -f rawvideo -pix_fmt rgb32 -video_size {Args.ImageProvider.Width}x{Args.ImageProvider.Height} -i {PipePrefix}{videoPipeName}";
var videoOutArgs = $"{Args.VideoArgsProvider(Args.VideoQuality)} -r {Args.FrameRate}";
if (settings.FFMpeg.Resize)
{
var width = settings.FFMpeg.ResizeWidth;
var height = settings.FFMpeg.ResizeHeight;
if (width % 2 == 1)
{
++width;
}
if (height % 2 == 1)
{
++height;
}
videoOutArgs += $" -vf scale={width}:{height}";
}
string audioInArgs = "", audioOutArgs = "";
if (Args.AudioProvider != null)
{
audioInArgs = $"-f s16le -acodec pcm_s16le -ar {Args.Frequency} -ac {Args.Channels} -i {PipePrefix}{audioPipeName}";
audioOutArgs = Args.AudioArgsProvider(Args.AudioQuality);
_audioPipe = new NamedPipeServerStream(audioPipeName, PipeDirection.Out, 1, PipeTransmissionMode.Byte, PipeOptions.Asynchronous, 10000, 10000);
}
_ffmpegIn = new NamedPipeServerStream(videoPipeName, PipeDirection.Out, 1, PipeTransmissionMode.Byte, PipeOptions.Asynchronous, 10000, 10000);
_ffmpegProcess = FFMpegService.StartFFMpeg($"{videoInArgs} {audioInArgs} {videoOutArgs} {audioOutArgs} {Args.OutputArgs} \"{Args.FileName}\"", Args.FileName);
}
/// <inheritdoc />
public void Dispose()
{
_ffMpegWriter.Dispose();
var videoInArgs = $"-i \"{_tempFileName}\"";
var videoOutArgs = $"{_args.VideoArgsProvider(_args.VideoQuality)} -r {_args.FrameRate}";
var audioOutArgs = "";
if (_args.AudioProvider != null)
{
audioOutArgs = _args.AudioArgsProvider(_args.AudioQuality);
}
var process = FFMpegService.StartFFMpeg($"{videoInArgs} {videoOutArgs} {audioOutArgs} {_args.OutputArgs} \"{_args.FileName}\"", _args.FileName);
process.WaitForExit();
File.Delete(_tempFileName);
}
