In D3D9DXVA2Manager::SupportsConfig, it passes the output type to ConvertMFTypeToDXVAType, which is incorrect according to Microsoft documentation:

https://docs.microsoft.com/en-us/windows/win32/medfound/supporting-dxva-2-0-in-directshow#finding-a-decoder-configuration

// Fills in a DXVA2_VideoDesc structure based on the input format.
void FillInVideoDescription(DXVA2_VideoDesc *pDesc);

We should change SupportsConfig to be consistent with this documentation. The output media type from WMFVideoMFTManager does not have MF_MT_FRAME_RATE set, so it should either be set in WMFVideoMFTManager::SetDecoderMediaTypes(), or a placeholder/approximation should be used in SupportsConfig.

Improved the debug description of WMF video decoders to list the DXVA version used as well as the correct output type.

Backed out for causing gl failures.

Backout link: https://hg.mozilla.org/integration/autoland/rev/977e4100a0776400293e3237691b614b6bcaa131

Push with failures: https://treeherder.mozilla.org/jobs?repo=autoland&selectedTaskRun=KjcwS3EqTva0cMnH7kX__g.0&resultStatus=testfailed%2Cbusted%2Cexception%2Cretry%2Cusercancel&revision=876973cc91389050c0dcf2c3d5af9143d90d38bd

Failure log:

• https://treeherder.mozilla.org/logviewer?job_id=374606007&repo=autoland&lineNumber=3707
• https://treeherder.mozilla.org/logviewer?job_id=374606344&repo=autoland&lineNumber=2206
• https://treeherder.mozilla.org/logviewer?job_id=374600541&repo=autoland&lineNumber=9216

Re-landing with a fix, it looks like there was a null reference in debug logging.

https://hg.mozilla.org/mozilla-central/rev/a677ce7701a6