HTMLMediaElement.videoTracks
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videoTracks 为 HTMLMediaElement çåªè¯»å±æ§ï¼å®æ¯ä¸ä¸ª VideoTrackList å表ï¼å表ä¸å
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ç´ çè§é¢è½¨ï¼è§é¢è½¨ä¸ºVideoTrack ç±»å对象ã
å®æ¯ä¸ä¸ªå®æ¶å表; å½ç¸åºçåªä½å ç´ å¢å æå é¤è§é¢è½¨æ¶ï¼è¿åå表ä¼åçå¨æçæ¹åãç±æ¤ä½ å¯ä»¥çæ§åæ£æµè§é¢è½¨åççååãå¦ä¹ VideoTrackList äºä»¶å¯ä»¥è·å¾æ´å¤å ³äº media element è§é¢è½¨çç¥è¯ã
Syntax
var videoTracks = mediaElement.videoTracks;
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è¿åçæ¯ä¸ä¸ªVideoTrackList ç±»åå¼ï¼ä¸ºç¸åºåªä½å
ç´ çè§é¢è½¨å表ãå¯ä»¥ç¨è®¿é®æ°ç»çæ¹æ³è®¿é®è¿ä¸ªå¼ï¼æ getTrackById() æ¹æ³è®¿é®å®ã
å表ä¸å
å«çæ¯ä¸ä¸ª VideoTrack 代表å
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Specifications
| è§è |
|---|
| HTML # dom-media-videotracks-dev |
Browser compatibility
See also
- The interface defining it,
HTMLMediaElement. <video>VideoTrackandVideoTrackList