I found a video thats archived on WebArchive but when I try to play it, it says that an error has occured and that its not available for playback. I know its archived cuz when I scroll through the video i can see the frames. Is there anything I can do to fix this?
Archiving modern websites is rather tricky. There are tons of servers involved and they often run some software themself. These are black boxes that cannot be archived without direct help from the web admins. For this reason, archived sites are often broken in some minor or major way.
Without a link, it is pretty hard to help you with your specific problem.