Hey, thanks for the zap. Didn't catch you as I was asleep (and forgot to turn off the stream x3), but here's a quick guide to what you mentioned:

Open OBS, and in the "Sources" section in the bottom middle, click the "+" button and click "add media source", toggle "create new" and name it whatever you want, then hit "ok". After that, click the "browse" button in the new window that pops up, select the video file you want to stream, then toggle the "loop" option, then hit "ok".

After that, adjust the size of the video that should now be visible in your OBS to fit your window (move around, resize, etc).

Done. Start your stream 👍