Q: I am monitoring real-time video over 144 channels by connecting 4 monitors with Intel i7 + Quadro P1000 (GPU) configuration.
By the way, up to the 2nd monitor is normal, but from the 3rd monitor, the video is cut off. Why is that and what should be done?

 

A:
1) Intel i7 CPU
+) i7 CPU also has a grade, but the general i7 has 4 cores (Quad Core).
From a multimedia data processing point of view, this is an intermediate specification.
+) CPU selection is very important in real-time monitoring operation of more than 144 channels (cameras) in a configuration of 4 monitors.
2) Quadro P1000 GPU
+) The P1000 has the advantages of low power and easy multi-monitor configuration, but it is a low-spec GPU.
+) It is a better GPU than the GPU used in development, so it is difficult to conclude that the current information is the cause of the issue.

** Issue identification
+) If the CPU occupancy exceeds 90% and the phenomenon is reproduced, there is a high probability that it is a CPU issue.
+) CPU usage is less than 85%, but if the phenomenon is reproduced, there is a high probability that it is a GPU or MEM (out of memory) issue.
In addition to +), it is necessary to review the overall operating environment (OS / CPU / MEM / GPU / Device Driver / Etc)

** check item
1) Check camera stream settings and dynamic multi-stream control configuration
2) Check the camera stream encoding codec (H.264)
+) H.264 has much less decoding load than H.265.
+) It is recommended to use the H.264 codec for the stream used for multi-channel monitoring.
3) Activating camera settings intelligent codec
4) Default value is recommended for Client S/W setting (Preference – Video Enhancement)
+) In a low-end GPU environment, it is necessary to check the phenomenon depending on whether High-Quality Downscaling is used.