Bug 242854

Summary:	WebM file fail to play
Product:	WebKit	Reporter:	Jean-Yves Avenard [:jya] <jean-yves.avenard>
Component:	Media	Assignee:	Jean-Yves Avenard [:jya] <jean-yves.avenard>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	Unspecified
OS:	Unspecified

Description Jean-Yves Avenard [:jya] 2022-07-18 04:45:50 PDT

STR:

1- Open https://registry.khronos.org/webgl/sdk/tests/resources/red-green.webmvp8.webm

Actual: A media error is produced.
Expected: Video plays.

The video contains an empty vorbis track, this causes the AVFObjC player to later fail as if it finds a track that is not playbable to be a fatal error (failure in MediaPlayerPrivateAVFoundationObjC::trackIsPlayable)

Comment 1 Radar WebKit Bug Importer 2022-07-18 04:46:07 PDT

<rdar://problem/97190939>

Comment 2 Jean-Yves Avenard [:jya] 2022-07-18 04:55:26 PDT

In this particular case, we could make the track be ignored by the MediaFormatReader if a track is disabled because it contains no data.

However, this begs the question: should a file fail to play when a given track is invalid or should it be just ignored?

Comment 3 Jean-Yves Avenard [:jya] 2022-07-19 02:54:17 PDT

Pull request: https://github.com/WebKit/WebKit/pull/2538

Comment 4 EWS 2022-09-07 02:31:58 PDT

Committed 254219@main (af6020b7b7f9): <https://commits.webkit.org/254219@main>

Reviewed commits have been landed. Closing PR #2538 and removing active labels.