Embedded youtube channel homepages (iframe), help needed with autoplay

What I’m trying to do

Trying to embed yt channel homepages in my notes which works (I thought yt didn’t allow that, btw), but I’d rather the featured/default video not start playing when I open the note.

Things I have tried

Researching this topic is almost hopeless, since most threads involving obsidian and youtube talk about videos, not channel pages. I doubt templater can help (I use templater to generate the text that generates the iframe but it’s just text, right? Can teplater run code that affects the iframe afterwards? No idea.

So far, generating the iframe with html and running a script might be the only option. Too bad Obsidian sanitizes html so elements don’t execute. Even if I could get past that hurdle, it seems like manipulating other-origin iframe data might be too hard or even impossible.. something about same-origin policy? I dunno I’m not a web developer.