MediaStreamTrack.getCapabilities()
Baseline 2024Newly available
Since October 2024, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
MediaStreamTrack 接口的 getCapabilities() 方法返回一个 MediaTrackCapabilities 对象，此对象表示每个可调节属性的值或者范围，该特性依赖于平台和user agent.
一旦你知道了浏览器的功能，你的脚本可以通过调用 applyConstraints() 来请求配置为匹配理想或可接受的设置。参考功能、约束和设置以了解受限制属性的具体细节。
语法
var capabilities = MediaStreamTrack.getCapabilities();
参数
没有参数。
返回值
A MediaTrackCapabilities object which specifies the value or range of values which are supported for each of the user agent's supported constrainable properties.
规范
| Specification |
|---|
| Media Capture and Streams # dom-mediastreamtrack-getcapabilities |