1859080 - (d3d11va) Playback HEVC via Direct3D (11) Video Decoding

Status: NEW

(Core :: Audio/Video: Playback, enhancement, P2)

Description

[Tatsunori Uchino]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/118.0

Steps to reproduce:

https://github.com/StaZhu/enable-chromium-hevc-hardware-decoding#whats-the-tech-diff-compared-with-edge--safari

The API used by https://bugzilla.mozilla.org/show_bug.cgi?id=1853448 has the narrower range of supporting hardware decoders than that used by Chrome.
The GPU in i7 9700 partially has the support of the HEVC playback via QSV.
https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video
However, Firefox Nightly can't play HEVC videos like Edge unlike Chrome.
I've not purchased the HEVC video extension.

Reproduction steps:

1. Use a older Windows 11 PC with older CPU (e.g. 9th Gen; 11th Gen can play via the current API) and uninstall the HEVC video extension if it has been installed
2. Visit http://tests.caniuse.com/hevc or https://codepen.io/danm8675123/pen/abNavqG
3. Try playing the video

Actual results:

Can't play HEVC

Expected results:

Can play HEVC
(Chrome has already been able to do)
(11th Gen i7 1165G7 can do via the current API)