w3c / w3c/webcodecs

Emit metadata (SPS,VUI,SEI,...) during decoding

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Description

Splitting off an idea from @ytakio in https://github.com/w3c/webcodecs/issues/94#issuecomment-828054996

I think WebCodecs needs a method to get Metadata (including feature check method, as informative in spec?)

Can you clarify what's meant by "including feature check method, as informative in spec"? Do you mean you'd like to query for what types of metadata could potentially be emitted?

It may be very useful even if WebCodecs just pass a start point of each Metadata byestream (like SPS,VUI,SEI...) to WebAPPs.

Can you elaborate on how it would be useful to apps?

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked WebCodecs issue 94 comment and this issue's discussion about SPS, VUI, and SEI metadata during decoding. Review the existing WebCodecs API and specification entry points before proposing scope. Done requires agreement on which metadata applications can receive and whether a feature-check method is needed.

Written by the indexing model from the issue text.

Assessment

Domain
api, audio-video-rtc
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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