RESOLVED FIXED298245
[MSE][GStreamer] Initial support for multiple video tracks on MSE 
https://bugs.webkit.org/show_bug.cgi?id=298245
Summary [MSE][GStreamer] Initial support for multiple video tracks on MSE
Enrique Ocaña
Reported 2025-09-02 10:19:14 PDT
Multiple video tracks in MSE are (optionally) supported by the spec[1], but have never been used in practice in WebKitGTK/WPE. Creating more than one video SourceBuffer causes a non-linked pipeline error in WebKitMediaSrc. It would be nice to have a basic support of that use case, since it's apparently required for the YouTube EME tests. See: https://github.com/WebPlatformForEmbedded/WPEWebKit/issues/1549 [1] https://w3c.github.io/media-source/#dfn-sourcebuffer-configuration
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Enrique Ocaña
Comment 1 2025-09-02 10:47:50 PDT
Pull request: https://github.com/WebKit/WebKit/pull/50187
EWS
Comment 2 2025-09-08 10:36:15 PDT
Committed 299700@main (dffed01e1b6e): <https://commits.webkit.org/299700@main> Reviewed commits have been landed. Closing PR #50187 and removing active labels.
Radar WebKit Bug Importer
Comment 3 2025-09-08 10:37:14 PDT
<rdar://problem/160127798>
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