I've got some ProRes footage with an issue that I've never seen before. There are scrolling horizontal bands alternating between light and dark on all the footage from a particular shoot. The files were delivered to me as ProRes, and I haven't yet been told what camera was used. It almost looks like an analog ground loop issue, except that the line between light and dark is well defined.
Anybody seen anything like this? I've been trying to search but invariably any combo of words I search for just brings up rolling shutter stuff. Thanks.