Bug 1778333 Comment 3 Edit History

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Original comment by
on 
I beleive what you referred is https://datatracker.ietf.org/doc/html/rfc6381#section-3.3 and the codecs registered mentioned should be http://mp4ra.org/#/codecs.

`MediaSource.isTypeSupported('audio/mp4; codecs="Opus"')` fails in Chrome as well, while `MediaSource.isTypeSupported('audio/mp4; codecs="opus"')` works. That means it can cause a web-compabiliity issue if Firefox replaces [`opus`](https://searchfox.org/mozilla-central/rev/d01591796d5faccf762adb09a311d8ee12f7ca7f/dom/media/mp4/MP4Decoder.cpp#93) by `Opus`.

Not sure if it's a historical decision that we should avoid the web-compabiliity issue, or the spec is out-dated.
Revision 1 by
on 
I believe what you referred to is https://datatracker.ietf.org/doc/html/rfc6381#section-3.3 and the codecs registered mentioned should be http://mp4ra.org/#/codecs.

`MediaSource.isTypeSupported('audio/mp4; codecs="Opus"')` fails in Chrome as well, while `MediaSource.isTypeSupported('audio/mp4; codecs="opus"')` works. That means it can cause a web-compatibility issue if Firefox replaces [`opus`](https://searchfox.org/mozilla-central/rev/d01591796d5faccf762adb09a311d8ee12f7ca7f/dom/media/mp4/MP4Decoder.cpp#93) by `Opus`.

Not sure if it's a historical decision that we should avoid the web-compatibility issue, or the spec is out-dated.

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