>>274076735
Ovrtoolkit works okay, just as an overlay over any vr application. Can load up a comfy world in vrchat and watch. 
>>274078880
Yeah, entering urls is the worst part. The least bad way I can think to do it is use a local http server, use a fixed filename, and make some script with big buttons that swap files to that fixed filename that you can press in the overlay. Still need to transcode everything to mp4 hardsubs though.