I have looked all through the Nest developers site, and I can't find anything related to the camera. I can find plenty of great information on the thermostat and the smoke / CO alarm, but nothing for the camera.
In particular, I'm looking for how to get the video URL, how to get/set video resolution and frame rate, and how to get/set the zoom level (if applicable). Thanks.
As a short update to this question: I believe Nest made an API for the camera available today: https://developer.nest.com/documentation/api-reference/overview#cameras