High freeze duration

inboundvideocpunetwork

The incoming video stream was frozen for long periods of time.

Description

The incoming video stream was frozen in total for a long duration of time.

Frozen video negatively affects media quality and user experience.

Usually, frozen video stems from one of two main reasons:

  1. Poor network conditions, causing packet losses that force frames to be dropped
  2. CPU load causing the decoder to skip decoding frames or take too long to decode frames, missing their playout window

Correlate this observation with other observations related to either network and CPU that are reported for this session.

What do we do here?

We look at the total freeze duration. If it is higher than a minute or more than 4% of the total duration of the media stream, then we mark this as an Observation.