RESOLVED MOVED212035
Audio Drift on Live HLS streams 
https://bugs.webkit.org/show_bug.cgi?id=212035
Summary Audio Drift on Live HLS streams
Mikhail Fedorenko
Reported 2020-05-18 11:43:26 PDT
We are experiencing audio drift on Live HLS manifests. Safari versions without drift 13.1 (14609.1.20.111.8) 13.1 (13609.1.20.111.8) 13.0.5 (15608.5.11) 13.0.4 (14608.4.9.1.4) Drift found in: 13.1 (15609.1.20.111.8) 13.2 (15610.1.12.2) We have a test stream available. We noticed that if you let the stream run long enough, then it will overflow resync with the video for a short time before losing sync again.
Attachments
Add attachment proposed patch, testcase, etc.
Mikhail Fedorenko
Comment 1 2020-05-18 12:59:27 PDT
We have switched to a more limited feature set for our test encoder, currently using closed and fixed GOP, B min/max cadence is 3/3; and still seeing the issue.
Radar WebKit Bug Importer
Comment 2 2020-05-18 18:02:15 PDT
<rdar://problem/63372079>
Eric Carlson
Comment 3 2020-05-19 09:46:07 PDT
Hi Mikhail. It would be helpful to have access to your test stream. You can email me directly if you don't want to post the link publicly here. Thanks for reporting the bug!
Brent Fulgham
Comment 4 2022-02-10 14:47:21 PST
The fix for this issue was needed outside the WebKit project, therefore this is being resolved as 'Moved'. This should now be fixed in shipping software.
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