Milesight camera not sending a picture

[lawik]

I bought a fairly basic Milesight IP camera. It is set up on the network and I can get snapshots from it manually. It shows video.

ONVIF discovery in ex_nvr found it fine and seemed happy. But it never actually pulls any image from the device. Nothing of interest happens in the logs when hitting record or any of that.

Are there some good steps to try to figure out the issue or something obvious I must do? RTSP seems on by default.