MediaFoundation HEVC H265 encoding

Question

I'm able to successfully encode H264 video using MediaFoundation.

Now I want to export HEVC which is, according to official documentation , is supported.

I am doing everything as described there but whenever I want to set input media type to the writer it ends up with an error:

No suitable transform was found to encode or decode the content.

Here is a short code of what i do:

/* Set output media type */

IMFMediaType* pMediaTypeOut = nullptr;
MFCreateMediaType(&pMediaTypeOut);
pMediaTypeOut->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
pMediaTypeOut->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_HEVC);
MFSetAttributeSize(pMediaTypeOut, MF_MT_FRAME_SIZE, 640, 480);
MFSetAttributeRatio(pMediaTypeOut, MF_MT_FRAME_RATE, 30, 1);
pMediaTypeOut->SetUINT32(MF_MT_MPEG2_PROFILE, eAVEncH265VProfile_Main_420_8);
pMediaTypeOut->SetUINT32(MF_MT_MPEG2_LEVEL, eAVEncH265VLevel1);

// Add it to the sink writer
m_pWriter->AddStream(pMediaTypeOut, &m_streamIndex);

/* Set input media type */

IMFMediaType* pMediaTypeIn = nullptr;
MFCreateMediaType(&pMediaTypeIn);
pMediaTypeIn->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
pMediaTypeIn->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_NV12);
MFSetAttributeSize(pMediaTypeIn, MF_MT_FRAME_SIZE, 640, 480);
MFSetAttributeRatio(pMediaTypeIn, MF_MT_FRAME_RATE, 30, 1),
MFSetAttributeRatio(pMediaTypeIn, MF_MT_PIXEL_ASPECT_RATIO, 1, 1),

// Here it ends up with an error
m_pWriter->SetInputMediaType(m_streamIndex, pMediaTypeIn, nullptr);

Does anyone know if the HEVC encoding is really supported or it is just a documentation. And if it is really supported by Microsoft, then what am I doing wrong?

BTW: I am using latest version of Windows 10. Error checking is omitted for code simplicity

Answer 1

Maybe you can check the existence of the h265 encoder first by DXVA Checker tool or programmatically use MFEnumEx(MFT_CATEGORY_VIDEO_ENCODER, ...) to lookup.

If not found, you can try installing the HEVC Video Extension on MS App Store . It seems MS has separated the MF HEVC codec into app package after 2018 Fall Creator update. Also, the HW HEVC Encoder needed be installed via vendor's VGA driver.

Answer 2

Your output media type is incomplete:

MF_MT_AVG_BITRATE Average encoded bit rate, in bits per second. Must be greater than zero.

Similar problem with MF_MT_INTERLACE_MODE .

Code snippet that works:

Check(MFStartup(MF_VERSION));

ComPtr<IMFSinkWriter> SinkWriter;
Check(MFCreateSinkWriterFromURL(L"D:\\temp.mp4", nullptr, nullptr, SinkWriter.GetAddressOf()));

ComPtr<IMFMediaType> OutputMediaType;
Check(MFCreateMediaType(OutputMediaType.GetAddressOf()));
Check(OutputMediaType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video));
Check(OutputMediaType->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_HEVC));
Check(MFSetAttributeSize(OutputMediaType.Get(), MF_MT_FRAME_SIZE, 640, 480));
Check(OutputMediaType->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive));
Check(MFSetAttributeRatio(OutputMediaType.Get(), MF_MT_FRAME_RATE, 30, 1));
//Check(OutputMediaType->SetUINT32(MF_MT_MPEG2_PROFILE, eAVEncH265VProfile_Main_420_8));
//Check(OutputMediaType->SetUINT32(MF_MT_MPEG2_LEVEL, eAVEncH265VLevel1));
Check(OutputMediaType->SetUINT32(MF_MT_AVG_BITRATE, 1000000));

DWORD StreamIndex;
Check(SinkWriter->AddStream(OutputMediaType.Get(), &StreamIndex));

ComPtr<IMFMediaType> InputMediaType;
Check(MFCreateMediaType(InputMediaType.GetAddressOf()));
Check(InputMediaType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video));
Check(InputMediaType->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_NV12));
Check(MFSetAttributeSize(InputMediaType.Get(), MF_MT_FRAME_SIZE, 640, 480));
Check(InputMediaType->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive));
Check(MFSetAttributeRatio(InputMediaType.Get(), MF_MT_FRAME_RATE, 30, 1)),
//Check(MFSetAttributeRatio(InputMediaType.Get(), MF_MT_PIXEL_ASPECT_RATIO, 1, 1)),

Check(SinkWriter->SetInputMediaType(StreamIndex, InputMediaType.Get(), nullptr));