onStats()

wrtc.onStats() is called when Chrome browser has collected statistics about received media stream during a call. (Chrome only, never occurs on other browsers.)

You can use this event to display the statistics (mostly used for debug).

You must set call.adv.stats_ms to enable wrtc.onStats()

If you have set call.adv.stats_ms=1000 wrtc.onStats() will be called once per second during the duration of the call. (Chrome only)

wrtc.onStat(call, arg)

• call - the call object raising the event
• arg: JSON structure containing:
  • timestamp : date and time data was collected
  • remoteAddr : IP address data stream is coming from
  • remotePort : IP port data stream is coming from
  • remoteType : type of connection:
    • local : connected directly to remote peer
    • serverreflexive : address derived using STUN
    • relayed : connected through TURN server
  • videoBytes : number of video stream bytes received since the beginning of the call
  • videoPackets : number of video stream packets received since the beginning of the call
  • videoLost : number of video stream packets lost (should have arrived but never did) since the beginning of the call
  • videoBitRate : current bitrate video stream is received at, in kbps
  • videoWidth : width of the video frame currently received, in pixels
  • videoHeight : height of the video frame currently received, in pixels
  • videoFrameRate : number of video frames per second received (slow hardwares may drop video frames during render – this is the number of frames received)
  • videoJitterBufMs : size of the video jitter buffer, in ms of video stored
  • audioBytes : number of audio stream bytes received since the beginning of the call
  • audioPackets : number of audio stream packets received since the beginning of the call
  • audioLost : number of audio stream packets lost (should have arrived but never did) since the beginning of the call
  • audioBitRate : current bitrate audio stream is received at, in kbps
  • audioLevel : current audio volume (sound level)
  • audioJitter : current audio jitter

All measurements are of the incoming media stream.

call.adv.stats_ms