1. Registration Entry Requirements
A registration entry is a document describing one or several metadata entries, and has the following requirements:
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Each metadata entry is defined as a separate
VideoFrameMetadatadictionary member. -
Each metadata entry must be serializable.
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Each metadata entry must be defined by a W3C specification that has reached consensus in the originating Working Group.
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The specification defining each metadata entry must provide clearly defined semantics. In particular, interactions with the media processing pipeline (encoders, decoders, renderers, etc.) should be well defined.
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A candidate registration entry must be announced by filing an issue in the WebCodecs GitHub issue tracker so they can be discussed and evaluated for compliance before being added to the registry. If the Media Working Group reaches consensus to accept the candidate, a pull request should be drafted (either by editors or by the party requesting the candidate registration) to register the candidate. The registry editors will review and merge the pull request.
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Existing entries may be changed after being published, through the same process as candidate entries. Possible changes include modification of the link to the public specification.
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Existing entries may be deprecated. This requires Media Working Group consensus, and if still active, consensus of the Working Group that originated the registration entry specification.
2. VideoFrameMetadata members
| member name | public specification |
| segments | Human face segmentation |
| captureTime | Capture time |
| receiveTime | Receive time |
| rtpTimestamp | RTP timestamp |
3. Privacy Considerations
Please refer to the section Privacy Considerations in [WEBCODECS].
4. Security Considerations
Please refer to the section Security Considerations in [WEBCODECS].