[media-and-entertainment] Status of "Sourcing In-band Media Resource Tracks from Media Containers into HTML" (#41)

chrisn has just created a new issue for https://github.com/w3c/media-and-entertainment:

== Status of "Sourcing In-band Media Resource Tracks from Media Containers into HTML" ==
The Sourcing In-band Media Resource Tracks from Media Containers into HTML ([spec][1], [GitHub[2]) was produced by the [Media Resource In-band Tracks CG][3]. It describes mappings from audio and video tracks in media containers to the `AudioTrack` and `VideoTrack` HTML APIs, and how to parse VTT or TTML cues from media files and expose via the TextTrack API.

This document is referenced (normatively) from the HTML spec, but is an unofficial draft, and it's not clear which parts of this document are implemented in the main browser engines.

It would be good to turn this into a normative document - at least, for the parts that are actually implemented.

* Can anyone provide insight into which parts of this document are implemented?
* Is anyone interested in maintaining this document?
* If so, which group should do this work, given the Media Resource In-band Tracks CG is inactive. For example, TTWG, or Media WG?

This issue is prompted by some recent discussions:

* The [Byte Stream Format for CMAF][4] document produced by CTA WAVE, which defines the CMAF byte streams and is proposed to be included in the [MSE Byte Stream Format Registry][5], recommends updating Sourcing In-band Media Resource Tracks from Media Containers into HTML
* Media Capabilities API [discussion][6] on whether include capability detection for text tracks
* The [DataCue API proposal][7] recommends updating it to define inband event mappings, e.g., from ISO BMFF or CMAF containers

[1]: https://dev.w3.org/html5/html-sourcing-inband-tracks/
[2]: https://github.com/w3c/HTMLSourcingInbandTracks
[3]: https://www.w3.org/community/inbandtracks/
[4]: https://cta-wave.github.io/Resources/CMAF%20Byte%20Stream%20Format%20-%20PR.pdf
[5]: https://www.w3.org/TR/mse-byte-stream-format-registry/
[6]: https://github.com/w3c/media-capabilities/issues/157
[7]: https://github.com/WICG/datacue/blob/master/explainer.md#in-band-timed-metadata-processing


Please view or discuss this issue at https://github.com/w3c/media-and-entertainment/issues/41 using your GitHub account


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Received on Friday, 7 August 2020 13:59:53 UTC