RESOLVED FIXED262886
iOS 17.1 beta 2: ManagedMediaSource video playback stops when changing timestampOffset 
https://bugs.webkit.org/show_bug.cgi?id=262886
Summary iOS 17.1 beta 2: ManagedMediaSource video playback stops when changing timest...
Mattias
Reported 2023-10-09 06:54:44 PDT
Created attachment 468122 [details] Example code to reproduce the isssue Video playback stops on iOS beta 2 when timestampOffset is changed. This does not happen on macOS with Managed MediaSource. The error only occurs when the currentTime is close to the segment being appended after the timestampOffset has been changed. If the buffer is long enough the video does not freeze. There is a minimal example attached that can reproduce the issue. The example creates a ManagedMediaSource and starts appending segments. It will then set the currentTime on the video element to different latencies depending on if the "?lowLatency=true" query parameter has been set or not. At the 6th segment the timestampOffset will be set to -0.5s which will cause the playback to stop at around 10s if the lowLatency flag has been set. Reproducing the bug using the example attached: 1. Serve the html, js + media files with a web sever - "npx serve" or similar. 2. Open the page with the query parameter "?lowLatency=true". 3. Observe that the video stops around 10s in. Best regards, Mattias
Attachments
Example code to reproduce the isssue (34.87 MB, application/zip)
2023-10-09 06:54 PDT, Mattias 		no flags
Details
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Radar WebKit Bug Importer
Comment 1 2023-10-09 17:08:21 PDT
<rdar://problem/116707511>
Jean-Yves Avenard [:jya]
Comment 2 2023-10-12 07:15:32 PDT
Pull request: https://github.com/WebKit/WebKit/pull/18995
EWS
Comment 3 2023-10-12 18:41:32 PDT
Committed 269290@main (3acdede1a2e2): <https://commits.webkit.org/269290@main> Reviewed commits have been landed. Closing PR #18995 and removing active labels.
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