ZoneMinder Forums

05/25/21 13:32:05.418011 zmc_m6[2486].WAR-zm_packetqueue.cpp/95 [You have set the max video packets in the queue to 20. The queue is full. Either Analysis is not keeping up or your camera's keyframe interval is larger than this setting. We are dropping packets.]
05/25/21 13:32:05.517271 zmc_m6[2486].ERR-zm_packetqueue.cpp/135 [Unable to free up older packets. Not queueing this video packet.]

Lots of these. What does this mean?

It means the key frame from the camera is leaving the buffer before the video is analyzed, the key frame is needed for analysis. I resolved this issue by decreasing the key frame interval on my cameras. Mine is now set to 1 key frame per second, the lowest setting on my cameras. It matches the FPS of the camera. For example, 10 FPS = key frame every tenth frame. 8 FPS = every eighth frame.
I also made sure my buffer was greater than the FPS.

Thanks Andyrh.

So "key frame" is a camera setting, not a ZM setting?

And please help me understand, why is analysis even an issue, when the mode is set to nodect?

The key frame is the complete frame. The following frames are changes to the key. This reduces the video stream size and is a setting on the camera.

I am not sure about why you see the error in nodect mode.

I have not adjusted anything on the cameras, but I set the buffer in ZM to 50, and the errors have disappeared.