Cannot set MFT H264 decoder resolution to value other than 1920x1080

Question

Here's my code snippet, on Windows 10. If the <width, height> is set to other resolution such as 1280x760, 640x480, the pDecoderTransform_->SetOutputType() would fail with such error.

E [....] Failed to set output media type on H.264 decoder MFT.
Reason: The data specified for the media type is invalid, inconsistent, or not supported by this object. (Code: C00D36B4)

Please help.

  hr = CoCreateInstance(CLSID_CMSH264DecoderMFT, NULL, CLSCTX_INPROC_SERVER, IID_IUnknown, (void**) &pTransformUnk);
  CHECK_HR_RET_BOOL(hr, "Failed to create H264 decoder MFT.");

  hr = pTransformUnk->QueryInterface(IID_PPV_ARGS(&pDecoderTransform_));
  CHECK_HR_RET_BOOL(hr, "Failed to get IMFTransform interface from H264 decoder MFT object.");

  IMFAttributes* decoderAttributes;
  hr = pDecoderTransform_->GetAttributes(&decoderAttributes);
  CHECK_HR_RET_BOOL(hr, "Failed to get attributes.");

  hr = decoderAttributes->SetUINT32(CODECAPI_AVDecVideoAcceleration_H264, TRUE);
  CHECK_HR_RET_BOOL(hr, "Failed to enable CODECAPI_AVDecVideoAcceleration_H264");

  MFCreateMediaType (&pInputMediaType);
  pInputMediaType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
  pInputMediaType->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_H264);

  hr = pDecoderTransform_->SetInputType(0, pInputMediaType, 0);
  CHECK_HR_RET_BOOL(hr, "Failed to set input media type on decoder MFT.");

  MFCreateMediaType (&pOutputMediaType);
  pOutputMediaType->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
  pOutputMediaType->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_IYUV);

  // In the following lines, if other resolution is specified, e.g. 1280x760, 640x480,
  // "pDecoderTransform_->SetOutputType()" would fail.
  width = 1920;
  height = 1080;
  hr = MFSetAttributeSize(pOutputMediaType, MF_MT_FRAME_SIZE, width, height);
  CHECK_HR_RET_BOOL(hr, "Failed to set frame size on H264 MFT out type.");

  hr = pDecoderTransform_->SetOutputType(0, pOutputMediaType, 0);
  CHECK_HR_RET_BOOL(hr, "Failed to set output media type on H.264 decoder MFT.");

Answer 1

Hi,

Welcome to Microsoft Q&A!

0xC00D36B4 MF_E_INVALIDMEDIATYPE tells that you are trying to write a feed that requires conversion, and there is no suitable codec available. That is, the problem is with your media type which is not accepted by H264 decoder.

I guess the limit of the H264 decoder has been reached.

I suggest you could try to change the average bit rate value. And you could also try to use the other decoder, for example: MPEG-4 File Sink has no resolution restrictions.

Best Regards,

Jeanine

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Answer 2

Hello, could any one help ?

Answer 3

Hi Jeanine, repost this in case you missed it.

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Thanks !"

Answer 4

Hi Jeanine, could you help ?