Align Streaming Protocol Capabilities with Media Capabilities?

Aperta
#256 1 commento 0 reazioni 0 assegnatari Vedi su GitHub

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Valutazione

Difficoltà
5/5
Tempo stimato
Più di una settimana
Idoneità per principianti
25/100
Tipo di issue
Funzionalità
Chiarezza
Abbastanza chiara
Stato di attività
Ferma
Stack tecnologico
html
Ambito
api

Direzione di ricerca

Start by comparing the Open Screen Protocol streaming capability fields with the Media Capabilities API’s AudioConfiguration and VideoConfiguration, as the issue describes. Review the linked Media Capabilities issue 160 for the ongoing audio discussion. Done means deciding which listed capabilities belong in the protocol and resolving whether to add, retain, or drop them; the issue names no repository files or tests.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

v2

Reviewing #225, I wondered how streaming protocol capabilities exposed in a streaming-capabilities-response mapped to capabilities defined in the AudioConfiguration and VideoConfiguration constructs in the Media Capabilities API.

For Video:

  • The Open Screen Protocol has a max-pixels-per-second and a supports-rotation field, neither of which match any property in the Media Capabilities API. When are these fields useful? If they are, should they be considered in the Media Capabilities API as well? If not, could they be dropped?
  • On top of HDR related properties that will be added to the Open Screen Protocol, Media Capabilities also has scalabilityMode, which targets identifiers defined in WebRTC-SVC. Would that be worth adding to the Open Screen Protocol?
  • Media Capabilities also defines hasAlphaChannel. That does not strike me as particularly useful in a remote streaming scenario though?

For Audio, Media Capabilities API also has:

  • samplerate. The Open Screen Protocol has [max-frames-per-second] for video capabilities, but no equivalent for audio.
  • spatialRendering

Note that there is an ongoing discussion on these audio configuration capabilities in the Media Capabilities repo https://github.com/w3c/media-capabilities/issues/160.

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Bikeshed
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