Nerian Support Forum

Hello,
I would like to use SceneScan Pro with virtual cameras.
I compiled “input_transfer_example.cpp” from samples, but response images are mixed up, even when operation mode is “Pass through”: Ever encountered this issue?
Attached current settings of SceneScan if it can help.

Thank you for your support,
Victor

This is likely due to to a significant amount of packet loss on the network. If you are using the virtual network camera you must be aware that the achievable frame rate is significantly lower than with a real camera. This is due to the fact that the network throughput is actually the bottleneck for most configurations. In our presets SceneScan typically makes use of 900 MBit/s, so almost the full available bandwidth on a 1 gigabit link. If you are also transferring the input images over the same link, you will have to reduce the frame rate to remain with the available bandwidth. Also i would recommend to switch to TCP protocol in this case as there will always be a high amount of packets lost due to collisions, and TCP is able to handle this better.

Thank you Konstantin for your quick reply.
It is the same when sending image at a very low rate over UDP, so I tried TCP.
However, when sending images through NVCom I get no answer.
Looking through Wireshark, I see first images are sent but nothing comes back.

Regards,
Victor

Hello, can you reproduce the problem?
TCP is working well when using real cameras, but with virtual ones only UDP mode sends results.
Thank you for your support
Regards,
Victor