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Re: [webrtc-svc] Handling of unknown scalability modes is underspecified (#57)

From: Florent Castelli via GitHub <sysbot+gh@w3.org>
Date: Wed, 19 Jan 2022 14:11:38 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-1016502950-1642601497-sysbot+gh@w3.org>
In the SVC spec https://w3c.github.io/webrtc-svc/#error-handling:

`However, an error will result only if the requested scalabilityMode value is invalid for any supported codec.`. I guess this should throw an `RTCError` with description `hardware-encoder-error` or just an `OperationError`. We should probably be more clear about what to do there.

While it doesn't apply for `addTransceiver`, we may want to make sure that `setParameters` only checks the negotiated codec list or the subset indicated by `setCodecPreferences` prior negotiation.

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