New demo showing 2 videos in sync
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<style>
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video {
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float: left;
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width: 40%;
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}
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#controls {
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clear: left;
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}
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</style>
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<title>2 videos in sync</title>
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<article>
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<video id="one">
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<source src="assets/dizzy.mp4" />
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<source src="assets/dizzy.ogv" />
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</video>
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<video id="two">
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<source src="assets/dizzy.mp4" />
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<source src="assets/dizzy.ogv" />
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</video>
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<p id="controls">
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<input type="button" id="play" value="play">
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<span id="position">00:00</span> / <span id="duration">loading...</span>
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<input type="range" value="0" id="scrub" />
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</p>
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<p>This demo shows two videos running, which we're trying to run in sync. Moving the scrubber should scrub <em>both</em> videos.</p>
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</article>
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<script>
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var video = document.querySelector('#one'),
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video2 = document.querySelector('#two'),
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togglePlay = document.querySelector('#play'),
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position = document.querySelector('#position'),
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ready = false,
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controls = document.querySelector('#controls'),
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scrub = document.querySelector('#scrub');
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addEvent(togglePlay, 'click', function () {
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if (ready) {
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video.playbackRate = 0.5;
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if (video.paused) {
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if (video.ended) {
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video.currentTime = 0;
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video2.currentTime = 0;
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}
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video2.currentTime = video.currentTime;
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video.play();
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this.value = "pause";
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} else {
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video.pause();
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this.value = "play";
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}
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}
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});
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function seek() {
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scrub.value = video2.currentTime = this.currentTime;
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}
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addEvent(video, 'seeking', seek);
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addEvent(video, 'seeked', seek);
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addEvent(video, 'play', function () {
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video2.play();
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});
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addEvent(video, 'pause', function () {
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video2.pause();
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})
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addEvent(video, 'timeupdate', function () {
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position.innerHTML = asTime(this.currentTime);
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scrub.value = this.currentTime;
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});
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addEvent(video, 'ended', function () {
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togglePlay.value = "play";
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});
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addEvent(video, 'canplay', function () {
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video.muted = true;
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ready = true;
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document.querySelector('#duration').innerHTML = asTime(this.duration);
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scrub.setAttribute('max', this.duration);
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addEvent(scrub, 'change', function () {
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video.currentTime = this.value;
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video2.currentTime = this.value;
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});
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});
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function asTime(t) {
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t = Math.round(t);
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var s = t % 60;
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var m = Math.round(t / 60);
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return two(m) + ':' + two(s);
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}
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function two(s) {
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s += "";
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if (s.length < 2) s = "0" + s;
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return s;
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}
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</script>
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