[mediacapture-image] Clarify applicability of MediaTrackSupportedConstraints (#206)

reillyeon has just created a new issue for https://github.com/w3c/mediacapture-image:

== Clarify applicability of MediaTrackSupportedConstraints ==
This specification [extends the MediaTrackSupportedConstraints dictionary](https://w3c.github.io/mediacapture-image/#mediatracksupportedconstraints-section) with additional constraints as follows,

> MediaTrackSupportedConstraints is extended here with the list of constraints that a User Agent recognizes for controlling the photo capabilities.

Readers of this specification have mistakenly assumed that this means that these constraints only apply when capturing a single image using the `takePhoto()` API and not to the MediaStreamTrack as a whole. This makes the API appear unsuitable for controlling features such as pan, tilt and zoom for video streams when in fact it is.

Please view or discuss this issue at https://github.com/w3c/mediacapture-image/issues/206 using your GitHub account

Received on Monday, 1 April 2019 19:06:12 UTC