However, hundreds of hours of video is compelling to non-technical audiences and even more importantly is a preponderance of evidence that's going to be particularly damning if played in front of a PTA meeting.
With a git history it's going to come down to who can spin the better story. The video is the story and everyone recognizes it, so I expect fewer people would bother even challenging its authenticity.
And properly used you might not even have to relinquish privacy if falsely accused. A quick montage video demo and a promise to show the full hundreds of hours of video of "irrefutable" proof to embarrass the school district at the next PTA meeting might be sufficient to get the appropriate response.
Of course there are some people who put insane amounts of effort into not doing "real" work. However, anyone trying to prove that your child is in that position is going to find themselves in an uphill battle.
Which is the ultimate goal here. Make people realize that falsely accusing my children using dubious technology is going to be a lot more work than just giving up and leaving them alone.