CODEWITHSUNDEEP
c++winapivideo-encodingms-media-foundation
Bgt
Bgt

Reputation: 41

Cannot setup windows media video 9 screen encoder

Having trouble when setting up the input type. I'm getting this error:

MF_E_INVALIDMEDIATYPE: The data specified for the media type is invalid, inconsistent, or not supported by this object.

Any ideas how to fix it?
The error is returned at SetInputMediaType.
This is the setup code for input and output:

hr = MFCreateMediaType(&mediaTypeIn);
hr = mediaTypeIn->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video);
hr = mediaTypeIn->SetGUID(MF_MT_SUBTYPE,  MFVideoFormat_RGB24);
hr = mediaTypeIn->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);
hr = MFSetAttributeSize(mediaTypeIn, MF_MT_FRAME_SIZE, width, height);
hr = MFSetAttributeRatio(mediaTypeIn, MF_MT_FRAME_RATE, fps_num, fps_den);
hr = MFSetAttributeRatio(mediaTypeIn, MF_MT_PIXEL_ASPECT_RATIO, 1, 1);

hr = MFCreateMediaType(&mediaTypeOut);
hr = mediaTypeOut->SetGUID(MF_MT_MAJOR_TYPE, MFMediaType_Video); 
hr = mediaTypeOut->SetGUID(MF_MT_SUBTYPE, MFVideoFormat_MSS2);
hr = mediaTypeOut->SetUINT32(MF_MT_INTERLACE_MODE, MFVideoInterlace_Progressive);
hr = mediaTypeOut->SetUINT32(MF_MT_AVG_BITRATE, bit_rate);
hr = MFSetAttributeSize(mediaTypeOut, MF_MT_FRAME_SIZE, width, height);
hr = MFSetAttributeRatio(mediaTypeOut, MF_MT_FRAME_RATE, fps_num, fps_den);
hr = MFSetAttributeRatio(mediaTypeOut, MF_MT_PIXEL_ASPECT_RATIO, 1, 1);

hr = vx->sinkWriter->AddStream(mediaTypeOut, &vx->streamIndex);

// No problems before this point, and the call below returns MF_E_INVALIDMEDIATYPE
hr = vx->sinkWriter->SetInputMediaType(vx->streamIndex, mediaTypeIn, NULL);

Upvotes: 3

Views: 715

Answers (1)

mofo77
mofo77

Reputation: 1515

You don't tell us what is width, height, fps_num, fps_den, and so on. So, for example, if width is zero, you will receive MF_E_INVALIDMEDIATYPE...

EDIT

Here is the answer : Matt Andrews Microsoft (MSFT)

As noted earlier in this thread, the Microsoft screen encoder is not registered by default. The CLSID for the screen encoder is CLSID_CMSSCEncMediaObject2. If you want to use this in an application, you either need to create it manually using CoCreateInstance and then insert it into a topology, or locally register it using MFTRegisterLocalByCLSID.

MFVideoFormat_MSS2 is not present by default on system.

Upvotes: 1

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