WebRTC Metrics
A comprehensive overview of WebRTC statistics, derived indicators, and observable signals, to better understand call quality, connectivity, and user experience in rtcStats
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inbound-rtpinboundvideo
freezeCount
Count the total number of video freezes experienced by this receiver.
Description
Non-negative integer
MUST NOT exist for audio (this is video only).
Count the total number of video freezes experienced by this receiver. It is a freeze if frame duration, which is time interval between two consecutively rendered frames, is equal or exceeds Max(3 * avg_frame_duration_ms, avg_frame_duration_ms + 150), where avg_frame_duration_ms is linear average of durations of last 30 rendered frames.
The number of times the video froze for the viewer. We want this value to be as low as possible.
See also
- inbound-rtp->pauseCount
- inbound-rtp->totalFreezesDuration
- WebRTC Statistics Specification
Notes
- This is the best indication of a video quality issue as it shows an actual problem the user has experienced as opposed to a potential issue
- The causes of video freezes are varied. They can relate to both a network issue and a CPU problem
