Support Opus in mp4 (ISO-BMFF) with Media Source Extensions (MSE)

Category: Multimedia
Type: New or changed feature
Status: Enabled by default (Chrome 70)
Intent stage: None

Summary

Opus is an audio codec already supported by the HTML5 src attribute on <url> elements. This applies to mp4, ogg, and webm containers as well as in webm containers using Media Source Extensions. This change adds support for the Opus codec in the mp4 container to MSE.

Standards & signals

Specification: http://opus-codec.org/docs/opus_in_isobmff.html
Firefox: Shipped/Shipping
Safari: No signal
Web developers: Positive
Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=649438

Docs: https://www.w3.org/TR/mse-byte-stream-format-isobmff/ https://chromium-review.googlesource.com/c/chromium/src/+/1178929

Samples: https://googlechrome.github.io/samples/media/opus-in-mp4-for-mse.html http://storage.googleapis.com/dalecurtis/mse.html?type=mp4_opus&src=bbb-opus.mp4

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