/// <summary>
/// Creates a new instance of <see cref="FFMpegWriter"/>.
/// </summary>
/// <param name="FileName">Path for the output file.</param>
/// <param name="FrameRate">Video Frame Rate.</param>
public FFMpegWriter(string FileName, IImageProvider ImageProvider, int FrameRate,
int VideoQuality, FFMpegVideoArgsProvider VideoArgsProvider,
int AudioQuality, FFMpegAudioArgsProvider AudioArgsProvider,
IAudioProvider AudioProvider, int Frequency = 44100, int Channels = 2)
{
_videoBuffer = new byte[ImageProvider.Width * ImageProvider.Height * 4];
var audioPipeName = GetPipeName();
var videoPipeName = GetPipeName();
var videoInArgs = $"-framerate {FrameRate} -f rawvideo -pix_fmt rgb32 -video_size {ImageProvider.Width}x{ImageProvider.Height} -i {pipePrefix}{videoPipeName}";
var videoOutArgs = $"{VideoArgsProvider(VideoQuality)} -r {FrameRate}";
string audioInArgs = "", audioOutArgs = "";
if (AudioProvider != null)
{
audioInArgs = $"-f s16le -acodec pcm_s16le -ar {Frequency} -ac {Channels} -i {pipePrefix}{audioPipeName}";
audioOutArgs = AudioArgsProvider(AudioQuality);
_audioPipe = new NamedPipeServerStream(audioPipeName, PipeDirection.Out, 1, PipeTransmissionMode.Byte, PipeOptions.Asynchronous, 10000, 10000);
}
_ffmpegIn = new NamedPipeServerStream(videoPipeName, PipeDirection.Out, 1, PipeTransmissionMode.Byte, PipeOptions.Asynchronous, 10000, 10000);
_ffmpegProcess = FFMpegService.StartFFMpeg($"{videoInArgs} {audioInArgs} {videoOutArgs} {audioOutArgs} \"{FileName}\"");
}
FFMpegItem(string Name, string Extension, FFMpegVideoArgsProvider VideoArgsProvider, FFMpegAudioArgsProvider AudioArgsProvider)
{
this.Extension = Extension;
_videoArgsProvider = VideoArgsProvider;
_audioArgsProvider = AudioArgsProvider;
_name = Name;
}
public FFMpegPostProcessingItem(string Name, string Extension, FFMpegVideoArgsProvider VideoArgsProvider, FFMpegAudioArgsProvider AudioArgsProvider)
{
_name = Name;
_videoArgsProvider = VideoArgsProvider;
_audioArgsProvider = AudioArgsProvider;
this.Extension = Extension;
}
FFMpegItem(string Name, Func <string> Extension, FFMpegVideoArgsProvider VideoArgsProvider, FFMpegAudioArgsProvider AudioArgsProvider)
{
_extension = Extension;
_videoArgsProvider = VideoArgsProvider;
_audioArgsProvider = AudioArgsProvider;
_name = Name;
}
/// <summary>
/// Creates a new instance of <see cref="FFMpegVideoWriter"/>.
/// </summary>
/// <param name="FileName">Path for the output file.</param>
/// <param name="FrameRate">Video Frame Rate.</param>
public FFMpegVideoWriter(string FileName, int FrameRate, int Quality, FFMpegVideoArgsProvider VideoArgsProvider)
{
_ffmpegProcess = new Process
{
StartInfo =
{
FileName = "ffmpeg.exe",
Arguments = $"-r {FrameRate} -f image2pipe -i - {VideoArgsProvider(Quality)} \"{FileName}\"",
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardInput = true
}
};
_ffmpegProcess.Start();
_ffmpegIn = _ffmpegProcess.StandardInput.BaseStream;
}
/// <summary>
/// Creates a new instance of <see cref="FFMpegMuxedWriter"/>.
/// </summary>
/// <param name="FilePath">Path for the output file.</param>
/// <param name="FrameRate">Video Frame Rate.</param>
public FFMpegMuxedWriter(string FilePath, int FrameRate, int VideoQuality, FFMpegVideoArgsProvider VideoArgsProvider, int AudioQuality, FFMpegAudioArgsProvider AudioArgsProvider, IAudioProvider AudioProvider)
{
if (AudioProvider == null)
{
throw new ArgumentNullException(nameof(AudioProvider), $"{nameof(AudioProvider)} can't be null. Use {nameof(FFMpegVideoWriter)} instead.");
}
if (!Directory.Exists(BaseDir))
{
Directory.CreateDirectory(BaseDir);
}
var fileName = Path.GetFileName(FilePath);
tempVideoPath = Path.Combine(BaseDir, fileName);
tempAudioPath = Path.Combine(BaseDir, Path.ChangeExtension(fileName, ".wav"));
_audioWriter = new AudioFileWriter(tempAudioPath, AudioProvider.WaveFormat);
_videoWriter = new FFMpegVideoWriter(tempVideoPath, FrameRate, VideoQuality, VideoArgsProvider);
_ffmpegArgs = $"-i {tempVideoPath} -vcodec copy -i {tempAudioPath} {AudioArgsProvider(AudioQuality)} \"{FilePath}\"";
}
FFMpegItem(string Name, Func <string> Extension, FFMpegVideoArgsProvider VideoArgsProvider, FFMpegAudioArgsProvider AudioArgsProvider)
: this(Name, Extension)
{
_videoArgsProvider = VideoArgsProvider;
_audioArgsProvider = AudioArgsProvider;
}
public static FFMpegVideoWriterArgs FromVideoWriterArgs(VideoWriterArgs Args, FFMpegVideoArgsProvider VideoArgsProvider, FFMpegAudioArgsProvider AudioArgsProvider)
{
return(new FFMpegVideoWriterArgs
{
FileName = Args.FileName,
ImageProvider = Args.ImageProvider,
FrameRate = Args.FrameRate,
VideoQuality = Args.VideoQuality,
VideoArgsProvider = VideoArgsProvider,
AudioQuality = Args.AudioQuality,
AudioArgsProvider = AudioArgsProvider,
AudioProvider = Args.AudioProvider
});
}
/// <summary>
/// Creates a new instance of <see cref="FFMpegVideoWriter"/>.
/// </summary>
/// <param name="FileName">Path for the output file.</param>
/// <param name="FrameRate">Video Frame Rate.</param>
public FFMpegVideoWriter(string FileName, IImageProvider ImageProvider, int FrameRate, int Quality, FFMpegVideoArgsProvider VideoArgsProvider)
{
// x264 requires video dimensions to be even.
if (VideoArgsProvider == FFMpegItem.x264 || VideoArgsProvider == FFMpegItem.x265)
{
int h = ImageProvider.Height,
w = ImageProvider.Width;
if (h % 2 == 1)
{
--h;
}
if (w % 2 == 1)
{
--w;
}
if (h != ImageProvider.Height || w != ImageProvider.Width)
{
resize = new Rectangle(Point.Empty, new Size(w, h));
}
}
_videoBuffer = new byte[(resize?.Width ?? ImageProvider.Width) * (resize?.Height ?? ImageProvider.Height) * 4];
_ffmpegProcess = new Process
{
StartInfo =
{
FileName = ServiceProvider.FFMpegExePath,
Arguments = $"-hide_banner -framerate {FrameRate} -f rawvideo -pix_fmt rgb32 -video_size {(resize?.Width ?? ImageProvider.Width)}x{(resize?.Height ?? ImageProvider.Height)} -i - {VideoArgsProvider(Quality)} -r {FrameRate} \"{FileName}\"",
UseShellExecute = false,
CreateNoWindow = true,
RedirectStandardInput = true
}
};
_ffmpegProcess.Exited += (s, e) => _error = _ffmpegProcess.ExitCode != 0;
_ffmpegProcess.Start();
_ffmpegIn = _ffmpegProcess.StandardInput.BaseStream;
}
