User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0

Steps to reproduce:

1. Open a video source, take YT as an example.
2. Set to theatre mode and choose 1080p HD

Actual results:

1. Video is corrupt.
2. 480p/760p seems to work.

Expected results:

I ran a Mozregression that pointed to 1675329 which seems a bit off. I the downloaded and ran some builds manually. The build from 20.11 works correctly but the build from 21.11 is broken. Ran another Mozregression with the aforementioned dates and got the same bug.

System: openSUSE Tumbleweed/KDE not wayland.
Nvidia 1650 Super - 450.80.02

Videos play correctly on release builds.

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

about:support - pastebin

just wanted to note it's happening of virtually all video sources.

As you say, bug 1675329 does seem unlikely to be related. Strange it would crop up twice when looking for the regression.

Could you navigate to about:config and set gfx.webrender.force-disabled to true and see if that changes anything?

(In reply to Bryce Seager van Dyk (:bryce) from comment #3)

As you say, bug 1675329 does seem unlikely to be related. Strange it would crop up twice when looking for the regression.

Could you navigate to about:config and set gfx.webrender.force-disabled to true and see if that changes anything?

Changing the pref mentioned seems to 'fix' the issue.

s this a Linux/Nvidia thing? Did something change between 20.11 and 21.11?

Thanks.

Moving this to gfx based on gfx.webrender.force-disabled having an impact. Folks with more expertise in the gfx stack than I should be able to help with this further and have answers to you questions.

(In reply to Pulse from comment #0)

Actual results:

1. Video is corrupt.
2. 480p/760p seems to work.

Most videos have been broken for 3 weeks. This should be fixed now.
Please set gfx.webrender.force-disabled back to false. Thanks! :)

Oh, typo: Please set gfx.webrender.force-disabled back to false.