vlc: Blank output window with hw accelerated AV1 content

[hmartinez82]

Description / Steps to reproduce the issue

VLC is not displaying any video content (only audio) when playing AV1 content and hw acceleration is enabled.

This behavior is seen with both DXVA 2.0 and D3D11 VA.

The official VLC 3.0.21 build does not show this behavior and hw accelerated AV1 works as expected

Other hw accelerated codecs, like H.264, are working as expected

Expected behavior

Actual behavior

Verification

• [X] I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MINGW64_NT-10.0-22631

MINGW environments affected

• [ ] MINGW64
• [ ] MINGW32
• [X] UCRT64
• [X] CLANG64
• [ ] CLANG32
• [X] CLANGARM64

Are you willing to submit a PR?

✔️

[hmartinez82]

This indeed seems to be VLC specific. MPV with mpv --hwdec=d3d11va ... is working as expected

[lazka]

Afair official VLC is still using ffmpeg 4.4, so lots of potential differences there.