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HTML 音频/视频 DOM playbackRate 属性

❮ HTML 音频/视频 DOM 参考

示例

将视频设置为慢动作播放

let vid = document.getElementById("myVideo");
vid.playbackRate = 0.5;
自己尝试 »

定义和用法

playbackRate 属性设置或返回音频/视频的当前播放速度。


浏览器支持

表中的数字指定完全支持该属性的第一个浏览器版本。

属性
playbackRate 9.0 20.0

语法

返回 playbackRate 属性

audio|video.playbackRate

设置 playbackRate 属性

audio|video.playbackRate=playbackspeed

属性值

描述
playbackspeed 指示音频/视频的当前播放速度。
示例值
  • 1.0 是正常速度
  • 0.5 是半速(较慢)
  • 2.0 是双速(更快)
  • -1.0 是倒退,正常速度
  • -0.5 是倒退,半速

技术细节

返回值 数字,当前播放速度
默认值 1.0

❮ HTML 音频/视频 DOM 参考
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