YouTube 视频的播放速度控制?HTML5?

Playback speed control for YouTube videos? HTML5?(YouTube 视频的播放速度控制?HTML5?)

问题描述

我需要为 youtube 视频实现一个视频播放速度控制器(例如:以 1/2 速度播放视频)，我认为 HTML5 目前是唯一的方法(如果可能的话).我对 HTML5 视频知之甚少，但我对 youtube js API 了解很多.谁能指出我正确的方向?如果该解决方案仅适用于某些浏览器，那也没关系.

I need to implement a video playback speed controller (e.g.: play the video at 1/2 speed) for youtube videos, and I'm thinking that HTML5 is currently the only way to do this (if it's even possible). I know very little about HTML5 video, but I know a lot about the youtube js API. Can anyone point me in the right direction? It's okay if the solution will only work in some browsers.

推荐答案

新的 iframe api 允许您控制视频的速度:

The new iframe api allows you to control the speed of the video:

iframe api 参考:设置播放速率

默认播放速率为 1，表示视频正在以正常速度播放.播放速率可能包括 0.25、0.5、1、1.5 和 2 等值.

The default playback rate is 1, which indicates that the video is playing at normal speed. Playback rates may include values like 0.25, 0.5, 1, 1.5, and 2.

还有:

调用此函数并不能保证播放速率会真正改变.

Calling this function does not guarantee that the playback rate will actually change.

示例代码:

function onYouTubeIframeAPIReady() {
  var player;
  player = new YT.Player('player', {
    videoId: 'M7lc1UVf-VE',
    playerVars: { 'autoplay': 1, 'controls': 0 },
    events: {
      'onReady': function(e){
        // e.target = player
        e.target.setPlaybackRate(0.5); // set to half speed
        e.target.playVideo(); // watch lolcats in slow motion :)
      },
    }
  });
}

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