set youtube player theater mode when open video
Set youtube player theater mode
Alt, if you use UBlock:
! Youtube - Set theater mode player youtube.com##+js(set, ytcfg.data_.START_IN_THEATER_MODE, true)
or player with full height:
! Youtube - Set player full height youtube.com##+js(set, ytcfg.data_.START_IN_FULL_WINDOW_MODE, true)
