Re: [mediacapture-image] Ignore PTZ request if no PTZ camera (#246)

> Therefore, the permission part is resolved, too.
> 
> So, in my opinion, the issue at hand is resolved and should be closed.

Sounds good to me.

> Please note that while that is not currently stated in the spec, the user-agent is perfectly allowed to do the reverse and request the PTZ permission only if a PTZ device is about to be selected.

That is fine too. While we might not want to go too deep in device selection territory here, which is ultimately UA specific, it would be good to add some guidelines to implementors, something like:
- Only request PTZ permission if PTZ devices are selectable
- If user grants PTZ permission, make sure to use it, so select PTZ devices.

> another user-agent may want to request a PTZ permission even if the device is pan-incapable, and that is allowed, too.

Right, but it does not really make sense to do so.
I am ok not forbidding it but it would be valuable to provide guidelines so as to discourage that kind of behavior.
Requesting permissions is expensive and it should only be done when really necessary.

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Received on Wednesday, 5 May 2021 08:51:39 UTC