228935 2021-08-09 17:35:25 -0700 PCMU/PCMA audio fails to play 2021-08-10 06:47:16 -0700 1 1 1 Unclassified WebKit WebRTC Safari 14 iPhone / iPad iOS 14 NEW InRadar P2 Normal --- 1 firstcontact webkit-unassigned webkit-bug-importer youennf oldest_to_newest 1783039 0 firstcontact 2021-08-09 17:35:25 -0700 Prior to iOS 14.7, our tracks with PCMU and PCMA audio worked fine. As of 14.7 we're finding that PCMU/A audio will not play correctly on iPhone or iPad. In most cases playback never begins, in some cases playback will start and then stop after about half a second. In the same test case changing only the audio codec to Opus, audio plays as expected every time. 1783048 1 firstcontact 2021-08-09 18:09:38 -0700 FWIW, I've also found that backgrounding the browser app and then bringing it out of background will result in another fraction of a second of audio playback, then stops again. 1783136 2 youennf 2021-08-10 02:04:31 -0700 Hi Jay, I'll check this further tonight. Can you confirm whether https://webrtc.github.io/samples/src/content/peerconnection/audio/ is working or not for you? If you have MacOS, can you repro the issue there as well? 1783137 3 webkit-bug-importer 2021-08-10 02:05:17 -0700 <rdar://problem/81733876> 1783154 4 firstcontact 2021-08-10 06:47:16 -0700 (In reply to youenn fablet from comment #2) > Hi Jay, > I'll check this further tonight. > Can you confirm whether > https://webrtc.github.io/samples/src/content/peerconnection/audio/ is > working or not for you? > If you have MacOS, can you repro the issue there as well? Thanks Youenn. I can confirm that https://webrtc.github.io/samples/src/content/peerconnection/audio/ is working as expected for me on the same device that exhibits problems with my source. Unfortunately I am not equipped to test MAcOS. I will set up a test case with my problem source (wowza streaming engine) and send info to you offlist a bit later today.