I want to encode video using the "Intel® Quick Sync Video H.264 Encoder MFT". I'm using the MFT manually, without using a paired decoder MFT, or any other MediaFoundation components. Feeding normal buffers (IMFSamples with buffers created by MFCreateAlignedMemoryBuffer) works well.
Now I'm investigating whether I can feed it ID3D11Texture2D surfaces as input (DXGI_FORMAT_NV12, 1280x720) in order to improve performance. I tried to pass IMFSample instances created with MFCreateVideoSampleFromSurface or MFCreateDXGISurfaceBuffer to IMFTransform::ProcessInput and made multiple experiments (trying different texture creation flags), but the best result was that all input samples were accepted, but no output samples produced. In case it matters, I never actually tried uploading data to the textures, assuming this would not make a difference from textures filled with garbage pixel data.
Am I doing something wrong? Is this a bug in the Intel MFT? Is it just not supported?
