In the beginning I had to configure a plugin to get any video from sources like Youtube playing. I’ve done that and it works for about 2/3rds of the videos. But some still don’t work, and I don’t get more infos or warnings or error messages for it. I likely didn’t do more than install the plugin recommended by firefox after the initial installation.
This one works: Jackie Chan - How to Do Action Comedy - YouTube
This one doesn’t work: Illustrator on the iPad - Editing Pencil Tool Paths - YouTube
Vimeo also doesn’t work completely. Amazon Prime Video works completely.
Could someone give me a hint on what I could try to figure this one out?