NEW 249004
Audio bitrate drops after 5 minutes 
https://bugs.webkit.org/show_bug.cgi?id=249004
Summary Audio bitrate drops after 5 minutes
Teodor
Reported 2022-12-08 19:23:09 PST
Created attachment 463949 [details] Audio bitrate graph During multi-party WebRTC call (SFU), the issue was encountered when using RODECaster Pro Stereo microphone, opus/48000/2 codec, with minptime=10;useinbandfec=1 parameters. After around 5 minutes since the peer connection is established, the audio bitrate drops significantly and static noise is introduced. Packet count is consistent with no other issues (e.g., no video quality or data channel issues). Attached are screenshots of audio bitrate and packet count graphs, with bitrate drop happening around the time when the person resumes speaking after a pause in speech. This issue is consistently reproducible in Safari, yet does not happen in Chrome on the same device.
Attachments
Audio bitrate graph (45.76 KB, image/png)
2022-12-08 19:23 PST, Teodor 		no flags
Details
Audio packet count graph (28.02 KB, image/png)
2022-12-08 19:23 PST, Teodor 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Teodor
Comment 1 2022-12-08 19:23:38 PST
Created attachment 463950 [details] Audio packet count graph
Radar WebKit Bug Importer
Comment 2 2022-12-15 19:24:18 PST
<rdar://problem/103429762>
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