Media controls

Media controls are the bar a player wears: play and pause, the elapsed and total time, the progress track, volume, captions, quality, fullscreen. The set has been stable since tape decks, which is why the glyphs need no labels to a sighted viewer and why inventing new ones is a bad trade. What varies is which of them a given player earns: a fifteen second loop needs play and nothing else, a lecture recording needs speed and a chapter list, a podcast needs skip back thirty seconds far more than it needs fullscreen.

Play and pause share one button and one place. Two separate controls would mean the button under the pointer changes meaning between presses, and a bar where the primary action moves is a bar nobody can hit without looking. The same button therefore swaps its glyph and its accessible name together, and if it only swaps the glyph, a screen reader user is told to play something already playing. The other half of the state problem is the disappearing act: controls fade out while the picture plays and come back on pointer movement, on tap, or on pause. That is good for the picture and hard for everyone else, so the bar has to return for keyboard focus as well as for the pointer, and it must never be so quick to leave that a person aiming at it loses their target.

The pieces around the bar have their own words. The track is a scrubber, and dragging its playhead to move through the recording is scrubbing, which is a gesture with its own preview behaviour rather than something the bar itself does. Captions are a track the bar can switch on and off but not the same thing as the control that does it. Below the whole cluster sits the platform’s own answer: <video controls> gives a native bar, complete with keyboard support, picture in picture, and captions plumbing, for free. Building a custom bar means taking on space to play or pause, arrow keys to seek, M to mute, a visible focus ring on every control, and a time readout that a screen reader announces without chattering on every frame. That is the price, and a player that skips it is usually worse than the default it replaced.