Html5播放器实现倍速播放的方法示例

<video id="video" controls src="**.mp4" type="video/mp4"></video>
选择倍速播放：
<select id="select">
    <option value="0.5">0.5</option>
    <option value="1" selected>1.0</option>
    <option value="1.25">1.25</option>
    <option value="1.5">1.5</option>
    <option value="2">2.0</option>
</select>

var select = document.getElementById('select');
var video = document.getElementById('video');
select.addEventListener('change', function () {
    video.playbackRate = this.value;
})

<div id="player"></div>
<script src="//player.polyv.net/script/player.js"></script>
<script>
var player = polyvPlayer({
wrap: '#player',
width: 800,
height: 533,
vid: 'e785b2c81c9e018296671a1287e99615_e',
});
</script>

<div id="player"></div>
<script src="//player.polyv.net/script/player.js"></script>
<script>
var player = polyvPlayer({
wrap: '#player',
width: 800,
height: 533,
speed：[2, 1.5, 1.2, 0.5], //倍速播放参数设定值
vid: 'e785b2c81c9e018296671a1287e99615_e',
});
</script>