protected override void CreateMediaTarget(SinkWriter sinkWriter, Size2 videoPixelSize, out int streamIndex)
{
using (MF.MediaType mediaTypeOut = new MF.MediaType())
{
mediaTypeOut.Set <Guid>(MF.MediaTypeAttributeKeys.MajorType, MF.MediaTypeGuids.Video);
mediaTypeOut.Set <Guid>(MF.MediaTypeAttributeKeys.Subtype, VIDEO_ENCODING_FORMAT);
mediaTypeOut.Set <int>(MF.MediaTypeAttributeKeys.AvgBitrate, Bitrate);
mediaTypeOut.Set <int>(MF.MediaTypeAttributeKeys.InterlaceMode, (int)MF.VideoInterlaceMode.Progressive);
mediaTypeOut.Set <long>(MF.MediaTypeAttributeKeys.FrameSize, MFHelper.GetMFEncodedIntsByValues(videoPixelSize.Width, videoPixelSize.Height));
mediaTypeOut.Set <long>(MF.MediaTypeAttributeKeys.FrameRate, MFHelper.GetMFEncodedIntsByValues(Framerate, 1));
sinkWriter.AddStream(mediaTypeOut, out streamIndex);
}
}
public MediaFoundationVideoWriter(string filePath, Size2 videoPixelSize, Guid videoInputFormat, bool supportAudio = false)
{
bitrate = 1500000;
framerate = 15;
if (!MFInitialized)
{
// Initialize MF library. MUST be called before any MF related operations.
MF.MediaFactory.Startup(MF.MediaFactory.Version, 0);
}
sinkWriter = MF.MediaFactory.CreateSinkWriterFromURL(filePath, IntPtr.Zero, null);
this.videoPixelSize = videoPixelSize;
CreateMediaTarget(sinkWriter, videoPixelSize, out streamIndex);
// Configure input
using (MF.MediaType mediaTypeIn = new MF.MediaType())
{
mediaTypeIn.Set <Guid>(MF.MediaTypeAttributeKeys.MajorType, MF.MediaTypeGuids.Video);
mediaTypeIn.Set <Guid>(MF.MediaTypeAttributeKeys.Subtype, videoInputFormat);
mediaTypeIn.Set <int>(MF.MediaTypeAttributeKeys.InterlaceMode, (int)MF.VideoInterlaceMode.Progressive);
mediaTypeIn.Set <long>(MF.MediaTypeAttributeKeys.FrameSize, MFHelper.GetMFEncodedIntsByValues(videoPixelSize.Width, videoPixelSize.Height));
mediaTypeIn.Set <long>(MF.MediaTypeAttributeKeys.FrameRate, MFHelper.GetMFEncodedIntsByValues(framerate, 1));
sinkWriter.SetInputMediaType(streamIndex, mediaTypeIn, null);
}
if (supportAudio)
{
// initialize audio writer
var waveFormat = WAVEFORMATEX.DefaultPCM;
audioWriter = new MP3AudioWriter(sinkWriter, ref waveFormat);
}
// Start writing the video file. MUST be called before write operations.
sinkWriter.BeginWriting();
// Set initial frame index
frameIndex = -1;
}
