[megous]

It's possible to do 1080p@20fps max. I tried a few days ago.

Recordings from the phone:

1080p@20fps: https://megous.com/dl/tmp/vid.mp4

720p@30fps: https://megous.com/dl/tmp/vid-720.mp4

Cam -> display latency test (50ms):

720x480@60fps is also possible: https://megous.com/dl/tmp/IMG_0375.MOV