The nackCount property of the RTCInboundRtpStreamStats dictionary is a numeric value indicating the number of times the receiver sent a NACK packet to the sender. A NACK (Negative ACKnowledgement, also called "Generic NACK") packet tells the sender that one or more of the RTP packets it sent were lost in transport.


var nackCount = rtcInboundRtpStreamStats.nackCount;


An integer value indicating how many times the receiver sent a NACK packet to the sender after detecting that one or more packets were lost during transport.


Specification Status Comment
Identifiers for WebRTC's Statistics API
The definition of 'RTCInboundRtpStreamStats.nackCount' in that specification.
Candidate Recommendation Initial definition.

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