Media Playback

Automatically setting VR Projection Mode

If mozVideoProjection=<mode>_auto appears in the query-string of a webpage’s URL, Firefox Reality automatically uses the respective Projection Mode for the Fullscreened element (i.e., document.fullscreenElement) when Fullscreen mode is entered (i.e., when .requestFullscreen() is called).

Without the _auto at the end of the value (e.g., ?mozVideoProjection=360), the correct Projection Mode is selected, but it requires an additional step by the user of pressing the Projection Mode button (i.e., the VR-goggles icon).

Name	mozVideoProjection selected after requesting Fullscreen	mozVideoProjection selected and projected when requesting Fullscreen
2D	(default)	(default)
360	360	360_auto
360 Stereo	360s	360s_auto
180	180	180_auto
Stereo 180 Left to Right	180lr	180lr_auto
Stereo 180 Top to Bottom	180tb	180tb_auto
3D Side by Side	3d	3d_auto

• See https://github.com/MozillaReality/FirefoxReality/blob/a9da13e7a4/app/src/common/shared/org/mozilla/vrbrowser/ui/widgets/VideoProjectionMenuWidget.java#L123-L159