菜鸟教程 tryhtml5_av_met_addtexttrack 在线代码实例

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 <button onclick="addNewTextTrack()" type="button">Add a new text track</button>
<br> 
<video id="video1" controls="controls">
  <source src="/statics/demosource/mov_bbb.mp4" type="video/mp4">
  <source src="/statics/demosource/mov_bbb.ogg" type="video/ogg">
  Your browser does not support HTML5 video.
</video>

<script>
myVid=document.getElementById("video1");
function addNewTextTrack()
  { 
  text1=myVid.addTextTrack("caption");
  text1.addCue(new TextTrackCue("Test text", 01.000, 04.000,"","","",true));
  } 
</script> 

<p>Video courtesy of <a href="http://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>