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MediaCapabilities

The MediaCapabilities interface of the Media Capabilities API provides information about the decoding abilities of the device, system and browser. The API can be used to query the browser about the decoding abilities of the device based on codecs, profile, resolution, and bitrates. The information can be used to serve optimal media streams to the user and determine if playback should be smooth and power efficient.

The information is accessed through the mediaCapabilities property of the Navigator interface.

Instance methods

MediaCapabilities.encodingInfo(): When passed a valid media configuration, it returns a promise with information as to whether the media type is supported, and whether encoding such media would be smooth and power efficient.
MediaCapabilities.decodingInfo(): When passed a valid media configuration, it returns a promise with information as to whether the media type is supported, and whether decoding such media would be smooth and power efficient.

Specifications

Specification
Media Capabilities # media-capabilities-interface

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`MediaCapabilities`	66	79	63	No	53	13	66	66	63	48	13	9.0
`decodingInfo`	66 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]	79 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]	63 ["The `webrtc` value of the `type` option is named `transmission`.", "Before Firefox 101, `decodingInfo()` ignored `codecs` parameter options for `av01` codecs (treating them as `av1`)."]	No	53 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]	13	66 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]	66 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]	63 ["The `webrtc` value of the `type` option is named `transmission`.", "Before Firefox 101, `decodingInfo()` ignored `codecs` parameter options for `av01` codecs (treating them as `av1`)."]	48 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]	13	9.0 ["`codecs` string can contain any subset of optional parameters (should be all or none).", "Errors if `codecs` string contains unexpected characters (should evaluate string up to character)."]
`encodingInfo`	101	101	63 The `webrtc` value of the `type` option is named `transmission`.	No	87	15.4	101	101	63 The `webrtc` value of the `type` option is named `transmission`.	70	15.4	19.0

Instance methods

Specifications

Browser compatibility

See also