It's an eventuality at this point. There will be ways to determine manipulation, even cameras themselves will probably start embedding extraneous data within vi

It's an eventuality at this point. There will be ways to determine manipulation, even cameras themselves will probably start embedding extraneous data within video to at least make it more difficult to manipulate. (That is when it becomes impossible to differentiate between reality and lies.) At least then people wouldn't trust what they see at face value.