>>317856159
After some searching around, I found this extension to play back videos on youtube through webVR: https://addons.mozilla.org/en-US/firefox/addon/youtube-vr/ It's janky and requires a few extra clicks, but it works on 360 videos like https://www.youtube.com/watch?v=KRWS7b9c-4owithout installing extra software. It's not working on 180 videos unfortunately. I'm looking through the code to see if it's an easy fix.