If you're up for using Jellyfin and have satellite devices, you can check out something I'm working on to achieve this: https://github.com/MattMckenzy/Homehook
The main branch was compatible with chromecast devices, but I've stopped maintaining it in favor of the v2 branch, where HomeHook communicates directly with satellite devices through HomeCast.
Let me know if you have any questions about it, always glad to help!
You could try out something I whipped up for this and see if it works for you: https://github.com/MattMckenzy/ToothPick
Definitely the way to go, yt-dlp makes it so easy to automate too!
I'm currently working hard on something to fill this void! I've made HomeHook v2 as a web app and HomeCast as an mpv interface installed on my HTPC and some Pis I have around the house!
I still need to document the installation procedure but if you're interested in playing stuff from Jellyfin and YouTube, feel free to send me a message and I'll see if I can help out!
If you're up for using Jellyfin, you can check out something I'm working on to achieve this: https://github.com/MattMckenzy/Homehook
The main branch used to be compatible with chromecast devices, but I've stopped maintaining it in favor of the v2 branch, where HomeHook communicates directly with satellite devices through HomeCast. Working with Chromecasts were a huge pain.
Let me know if you have any questions about it, always glad to help!