This introduces a new alternative FFmpeg-based implementation for the
MF byte stream handlers, while keeping the current GStreamer-based as
default.
The new implementation can be enabled by setting the DWORD value:
DisableGstByteStreamHandler = 1
in the HKCU\Software\Wine\MediaFoundation registry key.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/6442