MediaTrackSettings: latency property
The MediaTrackSettings
dictionary's
latency
property is a double-precision floating-point
number indicating the estimated latency (specified in seconds) of the
MediaStreamTrack
as currently configured. This lets you determine what
value was selected to comply with your specified constraints for this property's value
as described in the MediaTrackConstraints.latency
property you provided
when calling either getUserMedia()
or
MediaStreamTrack.applyConstraints()
.
This is, of course, an approximation, since latency can vary for many reasons including CPU, transmission, and storage overhead.
If needed, you can determine whether or not this constraint is supported by checking
the value of MediaTrackSupportedConstraints.latency
as returned by a call
to MediaDevices.getSupportedConstraints()
. However, typically this is
unnecessary since browsers will 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.
Value
A double-precision floating-point number indicating the estimated latency, in seconds, of the audio track as currently configured.
Examples
See the Constraint exerciser example.
Specifications
Specification |
---|
Media Capture and Streams # dom-mediatrackconstraintset-latency |
Browser compatibility
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