Paste any YouTube URL (or just a video ID). Configure options, then click Copy to use as an OBS Browser Source URL.
https://www.youtube.com/embed/VIDEO_ID?autoplay=1&controls=0&loop=1&playlist=VIDEO_ID (+ your options)
Tip: For continuous looping, YouTube requires playlist=VIDEO_ID alongside loop=1.
If you paste a watch URL with a ?si=... token and “keep ?si” is on, we’ll carry it through,
though it usually isn’t required for OBS.