- 'none': Disallow muted autoplay. If the player is requested to autoplay while unmuted, and the platform does not support unmuted autoplay, the player will not start playback.
- 'all': Allow muted autoplay. If the player is requested to autoplay while unmuted, and the platform supports muted autoplay, the player will start muted playback.
- 'content': Allow muted autoplay only for the main content. Disallow muted autoplay for e.g. advertisements. (Not yet supported.)
The muted autoplay policy of a player for web.