When I grab a snapshot of a paused video, usually I'll get one good frame written to disc. Subsequent frames will appear to be grabbed normally (the thumbnail in the upper left of the VLC screen looks fine) but the file written to disc is a green frame. If I keep clicking the the grab (camera) icon a dozen times, I'll get a good grab out of that dozen or so.
I upgraded from 3.0.4 to 3.0.6 and the problem persists.
The video plays fine and no green video at all, just the frames captured to disc are green.
What could be causing that?