229601 2021-08-26 23:51:34 -0700 Audio stutters when playing a m3u8 file during WebRTC conference 2024-09-10 10:57:23 -0700 1 1 1 Unclassified WebKit Media Safari 14 iPhone / iPad iOS 14 RESOLVED CONFIGURATION CHANGED InRadar P2 Normal --- 1 yunzhou webkit-unassigned bfulgham jennykonamo webkit-bug-importer youennf oldest_to_newest 1787960 0 yunzhou 2021-08-26 23:51:34 -0700 Hi, We have encountered an issue that during a WebRTC conference, when a m3u8 format file is played using default <video> element, the beginning of the audio is stuttering for about 20 seconds, before it starts to play smoothly. The output of the video's sound is from top speaker. However, if a mp4 format file is played, it's smooth from beginning without any stuttering. The output of the video's sound is from bottom loudspeaker. If only a m3u8 format file is played without WebRTC conference, it plays smoothly. Tested iOS versions: - iPhone Xs Max on iOS 14.7.1 - iPad 7th Generation on iOS 14.7.1 To reproduce this issue: - Start a WebRTC call with only yourself in it - On the same page, play a video in m3u8 format, and verify if the audio stutters in the beginning Sample app for issue reproduction: https://static.inspify.io/playground/ios_webrtc_audio/index.html - Click on Join Meeting button - Approve camera / microphone permission from public Jitsi - No need to join conference room, while you can see your own video, play the video on top of the page - Verify if audio is stuttering at the beginning 1788790 1 youennf 2021-08-30 23:24:39 -0700 Hi Sheng, have you tried on latest iOS 15 betas? It seems to work for me there. 1789220 2 yunzhou 2021-08-31 22:17:18 -0700 Hello Youenn, I've just tried on iOS 15 on an iPad and the issue seems to be fixed. 1790067 3 webkit-bug-importer 2021-09-02 23:52:19 -0700 <rdar://problem/82711412>