What (dubious) video, audio and podcast services do you know?
Background: For some time now I'm working at the embedding of remote media (audio and video). It is now massively improved in the RC, but...
@Michael 🇺🇦 These are the ones (besides Youtube and others that were already mentioned here) that work with Grayjay. Maybe having a look at its plugins may help about the way they fetch the videos?