Source: lib/polyfill/videoplaybackquality.js, line 23 Methods (static) install() Install the polyfill if needed. Source: lib/polyfill/videoplaybackquality.js, line 35 (private, static) webkit_() → (non-null) {VideoPlaybackQuality} This: HTMLVideoElement Source: lib/polyfill/videoplaybackquality.js, line 59 Returns: Type VideoPlaybackQuality