Early versions of iOS would consistently play video in landscape regardless of the physical orientation. At some point they changed it so video can play in port

Early versions of iOS would consistently play video in landscape regardless of the physical orientation. At some point they changed it so video can play in portrait mode as well, so now if you keep your screen orientation locked you have to unlock it before you can watch your video in landscape - there's no way to tell "lock orientation except for media". So annoying.