The MediaTrackConstraints
dictionary's echoCancellation
property is a ConstrainBoolean
describing the requested or mandatory constraints placed upon the value of the echoCancellation
constrainable property.
If needed, you can determine whether or not this constraint is supported by checking the value of MediaTrackSupportedConstraints.echoCancellation
as returned by a call to MediaDevices.getSupportedConstraints()
. However, typically this is unnecessary since browsers will simply ignore any constraints they're unfamiliar with.
Because RTP doesn't include this information, tracks associated with a WebRTC RTCPeerConnection
will never include this property.
Syntax
var constraintsObject = { echoCancellation: constraint }; constraintsObject.echoCancellation = constraint;
Value
If this value is a simple true
or false
, the user agent will attempt to obtain media with echo cancellation enabled or disabled as specified, if possible, but will not fail if this can't be done. If, instead, the value is given as an object with an exact
field, that field's Boolean value indicates a required setting for the echo cancellation feature; if it can't be met, then the request will result in an error.
Example
See Example: Constraint exerciser in Capabilities, constraints, and settings for an example.
Specifications
Specification | Status | Comment |
---|---|---|
Media Capture and Streams The definition of 'echoCancellation' in that specification. |
Candidate Recommendation | Initial specification. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
echoCancellation | Chrome Full support 59 | Edge Full support ≤79 | Firefox Full support 50 | IE No support No | Opera Full support Yes | Safari ? | WebView Android Full support 59 | Chrome Android Full support 59 | Firefox Android Full support 50 | Opera Android ? | Safari iOS ? | Samsung Internet Android Full support 7.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown