The nice thing about youtube uuids is that they are universally unique :P But actually these are the only files we have associated with videos and the names are short and not random enough to repeat a youtube uuid.

Is there such a person? Because we don't really seem to have a data format. The reason this is so open is because there are at least four different patterns I've caught just scrolling through, and there doesn't seem to be any documentation about it anywhere.