I have thought a lot about this as well. What if it was possible to create some form of blockchain video uploading service? In other words, a camera automatically uploads the video with the time, date and location to a immutable video blockchain. If the court wanted to see video evidence, they would not use the video from the actual camera because that could be edited. Instead, they would access the source video on the blockchain. I don't really know a lot about it, so sorry if this is a stupid question.