Closed Bug 1678486 Opened 4 years ago Closed 3 years ago

Firefox vaapi developed issues in v82 and is still facing issues in nightly v85

Categories

(Core :: Audio/Video: Playback, defect, P3)

Firefox 85
defect

Tracking

()

RESOLVED WORKSFORME
Tracking Status
firefox83 --- affected
firefox84 --- affected
firefox85 --- affected

People

(Reporter: firefox-vaapi-bug, Unassigned)

References

(Blocks 1 open bug)

Details

Attachments

(2 files)

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:83.0) Gecko/20100101 Firefox/83.0

Steps to reproduce:

On a Nvidia Optimus laptop featuring intel UHD Graphics 630 and 1650ti mobile, iGPU does not decode video playback in Youtube and likely other sites as of Firefox 82. Tested Firefox 81 and 68 ESR and works without issue. Tested on 82, 83, and nightly 85, video playback becomes choppy above 30fps. Changing webrender settings in about:config to gfx.webrender.enable=true gfx.webrender.all=true and gfx.webrender.compositer=true and changing media.ffmpeg.vaapi.enable=true media.ffvpx.enable=false provides better (though not perfect) playback. No adjustments need to be made in Firefox 81 and below and they provide smoother playback, even with 82+ having made the correct adjustments

Actual results:

Video playback up to 4k 30 seems smooth, but all higher framerate video including 720p 60 induces significant stutter and choppiness if rendering in window that size or larger

Expected results:

Video playback should be smooth on iGPU at least up to 4k 60 in my testing with Firefox 81 and 68.

Adding additional detail, this affects all major Linux distributions as I've tested on several flavors of Ubuntu, Manjaro, and Fedora. Have not tested Windows or MacOS, though MacOS does not support this laptop (duh).

One more major detail. This issue appears to occur worse on a device I have running Intel HD 630 w/out a dedicated GPU. Video playback completely freezes on that device. Older Firefox versions do not.

Component: Untriaged → Audio/Video: Playback
Product: Firefox → Core

Thanks for the report! Please open about:support, click on "Copy text to clipboard" and paste it here. Thanks!

Severity: -- → S3
Priority: -- → P3

Is this still an issue or did things improve again?

Flags: needinfo?(firefox-vaapi-bug)

Please reopen if you see it again.

Status: UNCONFIRMED → RESOLVED
Closed: 3 years ago
Flags: needinfo?(firefox-vaapi-bug)
Resolution: --- → WORKSFORME
You need to log in before you can comment on or make changes to this bug.

Attachment

General

Created:
Updated:
Size: