[petra]

>> I can film a phone playing a video.

Maybe it's possible to make things somewhat harder.

Maybe the front camera can detect that and make it harder to do, or just covertly capture that and enable some legal process. Or encode a code of the user's phone for that purpose.

Also i remember certain format for images encoded in a certain format that when you try to capture them, you get only part of the pixels and lots of noise. Maybe something like this noise injection could be added to videos ?