Media Working Group Teleconference

• Past
• Confirmed

Agenda

This agenda can be viewed and updated on GitHub.

If you would like to add an item to the agenda or volunteer to scribe please open a pull request against this agenda.

This time, we have a number of issues related to MSE, and in particular MSE in Workers:

• w3c/media-source#184 MSE for WebCodecs (comment). See explainer: https://github.com/wolenetz/mse-for-webcodecs/blob/main/explainer.md - wolenetz

  Explainer describes supporting buffering containerless WebCodecs encoded media chunks with MSE for low-latency buffering and seekable playback.

• w3c/media-source#280 MSE-in-Workers: {Audio,Video,Text}Track{,List} IDL in HTML need additional DedicatedWorker in Exposed - wolenetz

  The extended HTML AudioTrack, VideoTrack, TextTrack, and their *TrackList IDLs need updating to have exposure to both Window and DedicatedWorker, not just Window.

• w3c/media-source#277 MSE-in-Workers: Consider (eventually) transitioning attached element to error upon termination of MediaSource's worker/what should media element do? - wolenetz

  Should HTMLMediaElement do any error transition upon the termination of the DedicatedWorkerGlobalScope that owns the attached MediaSource?

• w3c/media-source#275 Consider relaxing timing of initial HAVE_METADATA transitioning - wolenetz

  There is inconsistent behaviour between implementations in the updateend event associated with an appendBuffer() whose parsing causes a HAVE_METADATA state transition.

• w3c/media-source#281 MSE-in-Workers: Track enable/selection change behavior needs clarity - wolenetz

  What to do with selected/enabled track state management if MSE is in a DedicatedWorker, while the HTMLMediaElement remains in Window?

• w3c/media-source#156 Restore auto-revoking behavior of createObjectURL(MediaSource) to revert breaking change introducing memory leaks - wolenetz

• w3c/media-source#28 Support attachment (and inspection) of MediaSource to HTMLMediaElement via HTMLMediaElement.srcObject - wolenetz

Media Working Group Teleconference - 2021-09-14

Location	Date & Time
San Francisco (U.S.A.)	Tuesday, September 14, 2:00 PM PDT
Boston (U.S.A.)	Tuesday, September 14, 5:00 PM EDT
London (United Kingdom)	Tuesday, September 14, 10:00 PM GMT+1
Paris (France)	Tuesday, September 14, 11:00 PM GMT+2
Tokyo (Japan)	Wednesday, September 15, 6:00 AM GMT+9
Corresponding UTC (GMT)	Tuesday, September 14, 9:00 PM UTC

Logistics

Chairs: Jer Noble, Chris Needham

Webex: https://lists.w3.org/Archives/Member/w3c-archive/2020Jan/0323.html

IRC: https://irc.w3.org/?channels=#mediawg

If you are unable to login to view the call details please ask on the IRC before the call.

For assistance go to https://mit.webex.com/mit/mc and on the left navigation bar, click "Support".

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