Thanks a lot for your answers and ideas!
@whale-av Thanks! I will look into Syphon immediately! Even though I've been working with Touchdesigner a lot, I never had the idea to combine Touchdesigner and Gem... Love the possibilities Touchdesigner offers, but for this I'm looking for a solution that won't fry my RPi. As you wrote: A fan is more than nice to have, even though a work with really small resolutions (hence the idea of a youtube 240p-Stream being just perfect).

@60hz Great! I did already look into OBS a bit but didn't know about the virtual camera feature - that sounds exactly like what I am looking for. I'll give the OBS-VLC-Gem connection a shot!

I'll let you know, as soon as I make any progress!

@alexandros Thanks for answering! I looked into the external but it only outputs audio, not video. Still nice to have!

Hello there! I'm posting for the the first time but I am super thankful for everything I already learned from the forum!

For context: I built a patch with Gem that takes a webcam video and breaks it down to 40 individual squares. You can see the grid in the attached screenshot. Within each of the squares movement is registered via pix_movement2 and pix_blob. If the movement in one of the squares reaches a threshold, a drum sample is triggered (panned according to the relative position of the square.) That's the basic functionality and everything works so far, on mac as well as on raspberry. I use pd-l2ork, should that be of interest. The idea is to place a camera in front of a bird feeder so that birds can play cool free jazz drum solos when they move about.

Alternatively, I wanted to substitute the camera with a youtube livestream. The Cornell Lab of Ornithology has wonderful bird feeder livestreams running 24/7. The problem is that I have no idea whatsoever how to route the videostream from youtube into Pd. Or, if that's even possible with Gem. I'm guessing, a solution might include some FFmpeg to set up a "device" for the stream, but I'm a little stumped at the moment. Could someone point me into the right direction? Thanks in advance!