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<div class="wrapper"> <video id="player" muted autoplay controls> <source src="http://resrc.devdic.com/media/video/movie.mp4" type="video/mp4" /> <source src="http://resrc.devdic.com/media/video/movie.ogg" type="video/ogg" /> </video> </div>
window.addEventListener("load", function() { let elPlayer = document.querySelector("#player"); let track = elPlayer.addTextTrack("captions"); track.mode = "showing"; track.addCue(new VTTCue(0, 2.0, "Opps")); track.addCue(new VTTCue(2.2, 6.0, "Hurry and run away")); let track2 = elPlayer.addTextTrack("captions"); track2.mode = "showing"; track2.addCue(new VTTCue(0, 2.0, "뭐야!")); track2.addCue(new VTTCue(2.2, 6.0, "어서 도망가!")); let textTracks = elPlayer.textTracks; console.log(textTracks.length); });
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