1838095 - Hardware acceleration does not work to play (YouTube) videos

Status: RESOLVED INCOMPLETE

(Core :: Audio/Video: Playback, defect)

Description

[zawooko]

Attachment: Screenshot 2023-06-11 205535.png

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0

Steps to reproduce:

All I have to do is play any YouTube video with hardware acceleration enabled.

Yes, I have tried removing all extensions and plugins, which did not work. However, launching Firefox in troubleshooting mode fixes it. Launching it normally breaks it again.

My PC is equipped with an i9-13700 and an RTX 4080, plus latest Windows updates + drivers. Disabling hardware acceleration allows me to play videos, but that somehow makes Firefox eat up 25-30% of my CPU and makes the fans go crazy.

Actual results:

Playing the video will just give a blurry sort of moving background where you can just make out colors of the videos. The audio works just fine.

Expected results:

Play videos without giving a blurry moving mess.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Jim Mathies [:jimm]]

Can you please post your about:support text? Thanks!

Sounds graphics related.

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Did this break in 114?

Comment 4

[zawooko]

Attachment: about:support

It says 114.0.1

Comment 5

[zawooko]

It says 114.0.1

Comment 6

[Jeff Muizelaar [:jrmuizel]]

Was it working in earlier versions?

Also can you try setting gfx.webrender.compositor=false to see if that helps?

Comment 7

[Glenn Watson [:gw]]

(you'll need to restart the browser between changes of that preference).

Comment 8

[Sotaro Ikeda [:sotaro]]

:alwu, can you comment to the bug?

Comment 9

[Sotaro Ikeda [:sotaro]]

zawooko, can you take a firefox profiler with Media setting like bug 1798052 comment 16?

https://profiler.firefox.com/

Comment 10

[zawooko]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #6)

Was it working in earlier versions?

Also can you try setting gfx.webrender.compositor=false to see if that helps?

I cannot comment on that, I definitely used earlier versions of Firefox on another PC but not this one. If you'd like me to test, please tell me what version to install.

Also, your suggestion fixed it! Just set gfx.webrender.compositor=false, restarted Firefox, and it immediately started working again. I tried toggling it a few times just to see if it was a fluke but it was not, that literally is fixing my issue. Thanks!

Comment 11

[Alastor Wu [:alwu]]

Per comment10, the issue is fixed for the reporter when turning the pref gfx.webrender.compositor to false, so clear my NI. In addition, it would be good to try to delete the pref media.hardware-video-decoding.failed to see if it helps or not.

Comment 12

[Jeff Muizelaar [:jrmuizel]]

Sotaro, can you take a look at this?

Comment 13

[Sotaro Ikeda [:sotaro]]

Hi zawooko, does the problem still happen with Firefox 115?

Comment 14

[BugBot [:suhaib / :marco/ :calixte]]

Clear a needinfo that is pending on an inactive user.

Inactive users most likely will not respond; if the missing information is essential and cannot be collected another way, the bug maybe should be closed as INCOMPLETE.

For more information, please visit BugBot documentation.