The immersive player when the phone turns sideways. The video runs edge to edge and the controls sit on top, then fade after a couple of seconds so nothing covers the picture; one tap brings them back. The top cluster carries the controls the in-feed version leaves out: speed (cycles on tap), mute, real fullscreen, dock to a floating corner, and more. The scrubber drags, the time counts down, and the action rail rides along. Keys: space play/pause, ←/→ seek, f fullscreen, m mute, Esc close. Reduced-motion holds the frame and keeps the chrome up. After the X (Twitter) immersive player.
Mechanism: one auto-hiding chrome layer over a full-bleed video; controls scale with intent.