Thank you for your comment. This made me reconsider. I already bit on ebay for an nokia stream box 8010. If I loose I might then go with the orbsmart s 87 plus since it has av1 :) Edit:

Nvm 8010 has av1 too. I previously bit on the 8000 which doesn’t but I thankfully lost.

The router is far away from both devices so I think connection might be bad. But I guess I can try with my phone on the spot where the TV is. Will do that tommorow. Thank you for the advice!

I store them on my pc but I think my internet connection is too bad for that

I already have a big pc monitor but I prefer watching movies on my TV. But your comment got me the idea to just buy a very long hdmi cable 🙂