It’s clearly legal, police release videos and stills all the time to help public identify the perps. If it was illegal, that would not be allowed.
That being said, this argument doesn’t mean the OP has to show the video. If you don’t believe the OP, I encourage you to read my thread from November that wyze cam caught my cousin’s murderer. That has pics posted. So I 100% believe the OP as I lived a similar scenario.