1960907 - AV1 Video jitter

Status: RESOLVED DUPLICATE of bug 1960950

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

Description

[Okarin]

Steps to reproduce:

On a computer with hardware decoding available for AV1 :

• Open a video on Youtube (for example: https://www.youtube.com/watch?v=TyCB25oXUA4)
• Check that the video use AV1 (right clik -> stats for nerds -> codecs = av01)

Actual results:

The video jitter.
Audio is ok.

Expected results:

Video should play normally.

Comment 1

[Okarin]

Mozzregression points to : https://phabricator.services.mozilla.com/D245202

Seen on an Intel 12th gen using hardware decoding (Windows 11).
No issue with VP9 codec (using hardware decoding).

Comment 2

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

:sotaro, since you are the author of the regressor, bug 1959856, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 3

[u770742]

For me it's not a problem with the video, it runs flawlessly.

But instead the YouTube's UI on the website is very laggy/stutters/jitters.

Comment 4

[Greg Stoll :gstoll]

I'm also seeing the original symptoms (video is very stuttery, audio is fine) for this AV1-encoded video: https://www.youtube.com/watch?v=gc8qXTh6tTY. Mozregression also pointed to bug 1959856.

Comment 5

[Chris Peterson [:cpeterson]]

This bug is probably a duplicate of bug 1960950.

Comment 6

[Sotaro Ikeda [:sotaro]]

Hi Okarin, can you attach about:support to this bug?

Comment 7

[Sotaro Ikeda [:sotaro]]

With pref media.wmf.zero-copy-nv12-textures = false, I could easier to reproduce the problem with the following STR with Win11 PC with NVIDIA GPU. I could not reproduce the problem with Win PCs with Intel GPU.

https://bugzilla.mozilla.org/show_bug.cgi?id=1817617#c22

Comment 8

[Sotaro Ikeda [:sotaro]]

removed

Comment 9

[Sotaro Ikeda [:sotaro]]

removed

Comment 10

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #7)

With pref media.wmf.zero-copy-nv12-textures = false, I could easier to reproduce the problem with the following STR with Win11 PC with NVIDIA GPU. I could not reproduce the problem with Win PCs with Intel GPU.

https://bugzilla.mozilla.org/show_bug.cgi?id=1817617#c22

It seemed that recent change to WebRender seemed to block to use video overlay. can_promote_to_surface() was failed.

Comment 11

[Greg Stoll :gstoll]

Attachment: aboutsupport.txt

In case it's helpful, here's my about:support.