1838491 - Super-blocky outgoing video in webex (regression!)

Status: NEW

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

Description

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

Attachment: image.png

STRs:

1. Join a webex meeting in Firefox and another browser (e.g. Chrome or Firefox release)
2. Observe video received in the other browser

Expected results: crisp and smooth video
Actual results: super-blocky video (see screenshot)

Comment 1

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

Hi John, this seems severe and affects beta now. Should we just back this out? LMK if you need more information.

Comment 2

[Jim Mathies [:jimm]]

Bummer this was supposed to help with Teams support.

Comment 3

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

Workaround: set media.webrtc.platformencoder or media.webrtc.platformencoder.sw_only to false (the latter depends on the former).

The first pref (which controls the second) is @IS_EARLY_BETA_OR_EARLIER@, making this only affect beta and nightly.

Comment 4

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

Set release status flags based on info from the regressing bug 1818567

Comment 5

[Jim Mathies [:jimm]]

The work that we think regressed this is early beta only.

Comment 6

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

Set release status flags based on info from the regressing bug 1818567

Comment 7

[Andrew]

If I understand correctly, the work done to enable the software based platform encoder decoder in order to improve H264 experience for new brower installations is now disabled. Is there a plan to re-enable it again in order to improve the H264 experience?

Comment 8

[Ina Popescu, Desktop QA]

Similar issue was encountered during the Microsoft Teams video call where video input/output is freezing in Nightly 120.0a1 and Firefox 119.0b4 while using macOS 12.
The issue no longer persists when doing the workaround mentioned in Comment 3.
Please let me know if I should file a separate bug for Microsoft Teams. Thanks