Bug 231074

Summary:

VP9-SVS no video stream from remote peer on some devices

Product:

WebKit

Reporter:

olena.bezkrovna

Component:

WebRTC

Assignee:

youenn fablet <youennf>

Status:

RESOLVED FIXED

Severity:

Critical

CC:

eric.carlson, ews-watchlist, glenn, jer.noble, philipj, sergio, webkit-bug-importer, youennf

Priority:

Keywords:

InRadar

Version:

Safari 15

Hardware:

All

OS:

All

Attachments:

Description	Flags
Patch	none

Description olena.bezkrovna 2021-10-01 05:36:58 PDT

We were able to reproduce the issue on:
- MacBooks 2015 and older with Safari 15 
- iPad Air 2 with Safari 15

1. Initiate 2p2 call
2. Check the video from the remote peer

Actual result: No video from the remote peer (peer connection stats show frames received)

Issue is not reproducible on Version 14.1.2 (16611.3.10.1.3)

Comment 1 youenn fablet 2021-10-01 06:22:49 PDT

Can you clarify where the issue is?
If the issue is on rendering vp9 on the iPad Air 2, this might be bug 230604.
Marking it as duplicate, please reopen if my assumption is not correct.

*** This bug has been marked as a duplicate of bug 230604 ***

Comment 2 olena.bezkrovna 2021-10-01 06:30:36 PDT

The issue is reproducible on MacBooks model 2015 and older with Safari 15 and not reproducible on Version 14.1.2 (16611.3.10.1.3)

Comment 3 olena.bezkrovna 2021-10-01 06:34:22 PDT

reopening the issue

Comment 4 youenn fablet 2021-10-05 04:13:04 PDT

I investigated with the help of Olena.
I think this should be fixed with bug 230604.
Let's validate this when bug 230604 fix lans in Safari Tech Preview.

Comment 5 Radar WebKit Bug Importer 2021-10-08 05:37:13 PDT

<rdar://problem/84024646>

Comment 6 olena.bezkrovna 2021-12-23 03:54:13 PST

Retested with 15.2 Safari release. Issue is fixed for Safari 15.2 on macOS. On mobile devices issue is reproducible for some device models (e.g. iPhone XR, iPhone 12 Pro, iPad Air 4th gen), can be tested with a sample https://bug-231071-attachments.webkit.org/attachment.cgi?id=440040

Comment 7 olena.bezkrovna 2022-01-12 04:27:50 PST

Any progress on the issue? It is severe issue that affects wide range of IOS devices

Comment 8 youenn fablet 2022-01-12 05:53:07 PST

Just had a quick look, and the issue is probably related to fallback decoder being using VTB instead of Libvpx as it should.
The temp workaround would be to not rely on kSVC downstream.

Comment 9 youenn fablet 2022-01-12 06:02:07 PST

Created attachment 448938 [details]
Patch

Comment 10 EWS 2022-01-12 09:58:37 PST

Committed r287928 (245961@main): <https://commits.webkit.org/245961@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 448938 [details].

Comment 11 olena.bezkrovna 2022-04-12 05:40:53 PDT

Is the fix merged? I retested the issue with the latest IOS Beta 15.5 and still see the problem. If it is not merged is there any schedule for when it is going to be merged?

Comment 12 olena.bezkrovna 2022-06-08 02:21:12 PDT

Any updates on the issue? I is still reproducible on the latest iPadOS 15.6 Beta Safari (tested with iPad Air 4th gen with sample https://bug-231071-attachments.webkit.org/attachment.cgi?id=440040)