[Webkit-unassigned] [Bug 213567] New: Pop noise occurs while playing encrypted HLS in Safari on iOS 13 or later.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Jun 24 10:21:23 PDT 2020


https://bugs.webkit.org/show_bug.cgi?id=213567

            Bug ID: 213567
           Summary: Pop noise occurs while playing encrypted HLS in Safari
                    on iOS 13 or later.
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: yuta.naito at play.jp

Hi, Developers.

I found the issue that pop noise occuerd when I play encrypted HLS in Safari on iOS/iPadOS 13 or later.
It does not happen under the following conditions
・Under iOS 13.0
・Unencrypted HLS

It happened on the following devices.
・iPhone 6S (13.5.1, 13.6 Beta2)
・iPhone X (13.3.1)
・iPhone11 pro (13.4, 13.5.1, 14.0 beta1)
・iPad Pro(13.3.1)
・iPad mini (13.3.1)

I thought it was the same problem as this ticket, but I didn't get the error mentioned on this ticket. 
https://bugs.webkit.org/show_bug.cgi?id=212131

I prepare sample video that the problems is happened.
https://d29c8ds76t1544.cloudfront.net/dev_player/audio_sync/noise.html
And this video is not happened. (Not encrypted video)
https://d29c8ds76t1544.cloudfront.net/dev_player/audio_sync/not_noise.html

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