RESOLVED DUPLICATE of bug 212131 212472
When playing encrypted HLS, video and audio are out of sync gradually. 
https://bugs.webkit.org/show_bug.cgi?id=212472
Summary When playing encrypted HLS, video and audio are out of sync gradually.
Yuta Naito
Reported 2020-05-28 09:05:17 PDT
I found the issue that video and audio are out of sync gradually when playing encrypted HLS on iOS 13.4、13.5 Safari and macOS Safari (13.1). When playback starts, the video and audio are synchronized, but they gradually start to misalign video and audio. It does not happen under the following conditions ・ Under iOS 13.3 ・ Unencrypted HLS ・ Playback with MSE Player (e.g. hls.js) It's a sample page : https://d29c8ds76t1544.cloudfront.net/dev_player/audio_sync/sample_video.html
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Radar WebKit Bug Importer
Comment 1 2020-05-28 18:52:03 PDT
<rdar://problem/63741719>
Nonthawat Srichad
Comment 2 2020-05-29 00:02:01 PDT
Hi, we found the same issue here https://bugs.webkit.org/show_bug.cgi?id=212131
Yuta Naito
Comment 3 2020-05-31 21:03:32 PDT
Hi, Nonthawat Thanks for finding same issue. I change status because this issue is duprecated . *** This bug has been marked as a duplicate of bug 212131 ***
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