Windows Phone 8.1 Media Foundation H264 Maximum Resolution

I am trying to encode a video on Windows Phone 8.1 using Media Foundation library and recorder.

I managed to achieve this by setting MFVideoFormat_H264

both MF_MT_SUBTYPE

for my media output and using resolutions such as 720p and 480p.

But when I change the resolution to 1920x1080 (or 1920x1088), I get an error Incorrect Parameter

. so I am assuming my max resolution for H.264 codec is 1280x720.

I tried changing the codec to HVEC or MPEG2, etc., but no luck.

This is the cpp code where I set the output type and add it to the stream:

// Setup the output video type   

ComPtr<IMFMediaType> spvideoTypeOut;
CHK(MFCreateMediaType(&spvideoTypeOut));
CHK(spvideoTypeOut->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video));

GUID _vformat =  MFVideoFormat_H264;

CHK(spvideoTypeOut->SetGUID(MF_MT_SUBTYPE, _vformat));
CHK(spvideoTypeOut->SetUINT32(MF_MT_AVG_BITRATE, _bitrate));
CHK(spvideoTypeOut->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive));
CHK(MFSetAttributeSize(spvideoTypeOut.Get(), MF_MT_FRAME_SIZE, _width, _height));
CHK(MFSetAttributeRatio(spvideoTypeOut.Get(), MF_MT_FRAME_RATE, framerate, 1));
CHK(MFSetAttributeRatio(spvideoTypeOut.Get(), MF_MT_PIXEL_ASPECT_RATIO, ASPECT_NUM, ASPECT_DENOM));

CHK(_spSinkWriter->AddStream(spvideoTypeOut.Get(), &_streamIndex));

      

        
        
        
      

    

And here I am setting the input type:

// Setup the input video type   

    ComPtr<IMFMediaType> spvideoTypeIn;
    CHK(MFCreateMediaType(&spvideoTypeIn));
    CHK(spvideoTypeIn->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video));
    CHK(spvideoTypeIn->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_RGB32));
    CHK(spvideoTypeIn->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive));
    CHK(MFSetAttributeSize(spvideoTypeIn.Get(), MF_MT_FRAME_SIZE, _width, _height));
    CHK(MFSetAttributeRatio(spvideoTypeIn.Get(), MF_MT_FRAME_RATE, framerate, 1));
    CHK(MFSetAttributeRatio(spvideoTypeIn.Get(), MF_MT_PIXEL_ASPECT_RATIO, ASPECT_NUM, ASPECT_DENOM));

    CHK(_spSinkWriter->SetInputMediaType(_streamIndex, spvideoTypeIn.Get(), nullptr));

    CHK(_spSinkWriter->BeginWriting());

      

        
        
        
      

    

To add samples to the recorder, I use this function and here's where the exception is thrown:

void PictureWriter::AddFrame(const Platform::Array<uint8>^ videoFrameBuffer, int imageWidth, int imageHeight)
{
    // Create a media sample   
    ComPtr<IMFSample> spSample;
    CHK(MFCreateSample(&spSample));
    CHK(spSample->SetSampleDuration(_duration));
    CHK(spSample->SetSampleTime(_hnsSampleTime));

    _hnsSampleTime += _duration;

    // Add a media buffer
    ComPtr<IMFMediaBuffer> spBuffer;
    CHK(MFCreateMemoryBuffer(_bufferLength, &spBuffer));
    CHK(spBuffer->SetCurrentLength(_bufferLength));
    CHK(spSample->AddBuffer(spBuffer.Get()));

    // Copy the picture into the buffer
    unsigned char *pbBuffer = nullptr;
    CHK(spBuffer->Lock(&pbBuffer, nullptr, nullptr));
    BYTE* buffer = (BYTE*)videoFrameBuffer->begin() + 4 * imageWidth * (imageHeight - 1);
    CHK(MFCopyImage(pbBuffer + 4 * _width * (_height - imageHeight),
        4 * _width, buffer, -4 * imageWidth, 4 * imageWidth, imageHeight));

CHK(spBuffer->Unlock());

    // Write the media sample   
    CHK(_spSinkWriter->WriteSample(_streamIndex, spSample.Get()));
}

      

        
        
        
      

    

Why do you think I am getting an exception and how can I fix it?

Thank.