HTMLVideoElement.getVideoPlaybackQuality()

在此页

句法
范例
规范
浏览器兼容性
另请参阅
相关话题

HTMLVideoElement 方法 getVideoPlaybackQuality() creates and returns a VideoPlaybackQuality object containing metrics including how many frames have been lost.

The data returned can be used to evaluate the quality of the video stream.

句法

videoPQ = videoElement.getVideoPlaybackQuality();

返回值

A VideoPlaybackQuality object providing information about the video element's current playback quality.

范例

This example updates an element to indicate the total number of video frames that have elapsed so far in the playback process. This value includes any dropped or corrupted frames, so it's not the same as "total number of frames played."

var videoElem = document.getElementById("my_vid");
var counterElem = document.getElementById("counter");
var quality = videoElem.getVideoPlaybackQuality();
counterElem.innerText = quality.totalVideoFrames;

规范

规范	状态	注释
Media Playback Quality The definition of 'HTMLVideoElement.getVideoPlaybackQuality()' in that specification.	编者草案	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`getVideoPlaybackQuality`	Chrome 80	Edge 12	Firefox 42 42 25 — 42 注意事项 Disabled Limited support to an allowed list of sites, for example YouTube, Netflix, and other popular streaming sites. The limitation was removed when Media Source Extensions was enabled by default in Firefox 42. Disabled preference. To change preferences in Firefox, visit about:config.	IE 11	Opera 67	Safari 8	WebView Android 80	Chrome Android 80	Firefox Android 不支持 No	Opera Android 不支持 No	Safari iOS 不支持 No	Samsung Internet Android 不支持 No

图例

完整支持
不支持
实验。期望将来行为有所改变。

用户必须明确启用此特征。

另请参阅

<video> element
VideoPlaybackQuality 接口。

元数据

最后修改： Jan 30, 2020

在此页

句法

返回值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题