Symptoms: In a multi-party conference or P2P call, frame freezing or artifact occurs in video viewed by the local participant or other participants.
Exceptions of the endpoints, transmission network, or media processing devices may cause frame freezing or artifact. Common root causes are as follows:
[Endpoint problems]: The frame rate of video sent by the endpoint is low. The endpoint frequently sends I frames.
[Transmission network faults]: Packets received by the MCU are lost. Packets received by the MCU contain bit errors. Packets received by the endpoint are lost. Packets received by the endpoint contain bit errors.
[Media processing device faults]: The frame rate of video sent by the MCU is low.
The processing idea of frame freezing or artifact is as follows: Analyze the fault cause stage by stage from the pickup party's endpoint in the reverse direction of media processing based on the counter data collected in the SessionInsight until the fault cause is detected.
