# vjs.Html5 __EXTENDS__: [vjs.MediaTechController](vjs.MediaTechController.md) __DEFINED IN__: [src/js/media/html5.js#L12](https://github.com/videojs/video.js/blob/master/src/js/media/html5.js#L12) HTML5 Media Controller - Wrapper for HTML5 Media API --- ## INDEX - [METHODS](#methods) - [canControlPlaybackRate](#cancontrolplaybackrate-static) - [canControlVolume](#cancontrolvolume-static) - [init](#init-player-options-ready-) - [isSupported](#issupported-static) - [supportsNativeTextTracks](#supportsnativetexttracks-static) --- ## METHODS ### canControlPlaybackRate() `STATIC` > Check if playbackRate is supported in this browser/device. ##### RETURNS: * `[type]` [description] _defined in_: [src/js/media/html5.js#L548](https://github.com/videojs/video.js/blob/master/src/js/media/html5.js#L548) --- ### canControlVolume() `STATIC` > Check if the volume can be changed in this browser/device. > Volume cannot be changed in a lot of mobile devices. > Specifically, it can't be changed from 1 on iOS. ##### RETURNS: * `Boolean` _defined in_: [src/js/media/html5.js#L538](https://github.com/videojs/video.js/blob/master/src/js/media/html5.js#L538) --- ### init( player, options, ready ) ##### PARAMETERS: * __player__ * __options__ * __ready__ _defined in_: [src/js/media/html5.js#L14](https://github.com/videojs/video.js/blob/master/src/js/media/html5.js#L14) --- ### isSupported() `STATIC` > Check if HTML5 video is supported by this browser/device ##### RETURNS: * `Boolean` _defined in_: [src/js/media/html5.js#L436](https://github.com/videojs/video.js/blob/master/src/js/media/html5.js#L436) --- ### supportsNativeTextTracks() `STATIC` > Check to see if native text tracks are supported by this browser/device ##### RETURNS: * `Boolean` _defined in_: [src/js/media/html5.js#L558](https://github.com/videojs/video.js/blob/master/src/js/media/html5.js#L558) ---