HTMLMediaElement.videoTracks

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

videoTracksHTMLMediaElement 的只读属性,它是一个 VideoTrackList 列表,列表中包含相应媒体元素的视频轨,视频轨为VideoTrack 类型对象。

它是一个实时列表; 当相应的媒体元素增加或删除视频轨时,返回列表会发生动态的改变。由此你可以监控和检测视频轨发生的变化。学习 VideoTrackList 事件可以获得更多关于 media element 视频轨的知识。

Syntax

var videoTracks = mediaElement.videoTracks;

返回值

返回的是一个VideoTrackList 类型值,为相应媒体元素的视频轨列表。可以用访问数组的方法访问这个值,或 getTrackById() 方法访问它。

列表中包含的每一个 VideoTrack 代表其中的一个视频轨。

Specifications

Specification
HTML
# dom-media-videotracks-dev

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
videoTracks

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
User must explicitly enable this feature.
Has more compatibility info.

See also