Web/API/RTCRtpSendParameters

The WebRTC API's RTCRtpSendParameters dictionary is used to specify the parameters for an RTCRtpSender when calling its setParameters() method.

Properties

In addition to the properties below, RTCRtpSendParameters inherits the properties from the RTCRtpParameters interface.

encodings

An array of RTCRtpEncodingParameters objects, each specifying the parameters for a single codec that could be used to encode the track's media.
transactionId: A string containing a unique ID for the last set of parameters applied; this value is used to ensure that setParameters() can only be called to alter changes made by a specific previous call to getParameters(). Once this parameter is initially set, it cannot be changed.

Obsolete properties

degradationPreference ': Specifies the preferred way the WebRTC layer should handle optimizing bandwidth against quality in constrained-bandwidth situations; the value comes from the RTCDegradationPreference enumerated string type, and the default is balanced.
priority ': A string from the RTCPriorityType enumerated type which indicates the encoding's priority. The default value is low.

Specifications

Specification	Status	Comment
WebRTC 1.0: Real-time Communication Between BrowsersThe definition of 'RTCRtpSendParameters' in that specification.	Candidate Recommendation	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`RTCRtpSendParameters`	Chrome Full support 69	Edge Full support ≤79	Firefox No support No Notes' No support No Notes' Notes' Firefox expects an `RTCRtpParameters` object instead.	IE No support No	Opera ?	Safari ?	WebView Android Full support 69	Chrome Android Full support 69	Firefox Android No support No Notes' No support No Notes' Notes' Firefox expects an `RTCRtpParameters` object instead.	Opera Android ?	Safari iOS ?	Samsung Internet Android Full support 10.0
`degradationPreference`	Chrome No support No	Edge No support No	Firefox No support No	IE No support No	Opera ?	Safari ?	WebView Android No support No	Chrome Android No support No	Firefox Android No support No	Opera Android ?	Safari iOS ?	Samsung Internet Android No support No
`encodings`	Chrome Full support 69	Edge Full support ≤79	Firefox No support No Notes' No support No Notes' Notes' Firefox uses `RTCRtpParameters.encodings` instead.	IE No support No	Opera ?	Safari ?	WebView Android Full support 69	Chrome Android Full support 69	Firefox Android No support No Notes' No support No Notes' Notes' Firefox uses `RTCRtpParameters.encodings` instead.	Opera Android ?	Safari iOS ?	Samsung Internet Android Full support 10.0
`priority`	Chrome No support No	Edge No support No	Firefox No support No	IE No support No	Opera ?	Safari ?	WebView Android No support No	Chrome Android No support No	Firefox Android No support No	Opera Android ?	Safari iOS ?	Samsung Internet Android No support No
`transactionId`	Chrome Full support 69	Edge Full support ≤79	Firefox No support No	IE No support No	Opera ?	Safari ?	WebView Android Full support 69	Chrome Android Full support 69	Firefox Android No support No	Opera Android ?	Safari iOS ?	Samsung Internet Android Full support 10.0

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
See implementation notes.': See implementation notes.