For the 40k fans: https://www.youtube.com/watch?v=HNEzD5n6SAs

I had a similar experience looking up the code for ⊥, I didn’t realize the world has given a very specific meaning to the words “latex bottom”

It could be an issue with the codecs (browsers are usually pretty limited in what they support). You could try to use a client like Jellyfin Media Player instead. It bundles libmpv, so it plays almost any video format there is.