1905878 - VP9 playback stalls

Status: UNCONFIRMED

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

Description

[Jake Archibald]

Attachment: screen.webm

Steps to reproduce:

https://static-misc-3.glitch.me/alpha-video-test/vp9-video.html

Actual results:

The video plays and loops as expected on Android Chrome, but on Android Firefox the video freezes (tested on a Pixel 8 pro).

(note: the video displays incorrectly in Chrome due to a different issue https://issues.chromium.org/issues/349610465)

Expected results:

The video should not freeze.

Comment 1

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

The severity field is not set for this bug.
:jimm, could you have a look please?

For more information, please visit BugBot documentation.

Comment 2

[Paul Adenot (:padenot)]

https://share.firefox.dev/3AHrHJ5 is a profile of this by alwu, we can repro on all devices because this falls back to software decoding, and the decoding is annoyingly too close to the frame budget. Surely we can make the queue a bit deeper a smooth out the slowness.

Comment 3

[Paul Adenot (:padenot)]

This now works (e.g. on my Pixel 4 that is starting to show its age), likely thanks to Karl's recent work on video frame scheduling. Alastor, can you quickly check on the same device you used in comment 2? It was a Pixel 6.