I have an off-label Loryta Starlight that folks here told me is actually the same as the Dahua.
It's hardwired to an ASUS RT-AX58U that's set as a remote access point and is hardwired back to the central ASUS RT-AX58U.
When viewing the feed I'm observing some latency - frame delay and maybe some occasional dropped frames.
Without significantly reducing resolution (the application is to capture license plate #'s and/or other identifying detail) - how might the latency be reduced, please?
Thanks.
Hi
@kd4e
As
@wittaj noted, IP cameras all have some latency issues ..
Reducing latency :
1) Each network node produces some latency, thus:
A) Reduce the nodes
B) Ensure the nodes you have are able to process the ip packets as fast as you need.
Thus, this is why we want a quality IP switch between the camera and the NVR / VMS
this is also why we recommend NOT passing the video through the main router ..
2) Each camera has limited compute power .. if you ask the camera to do too much, it can take longer to process the packets.
A) H.264 vs H.265
Some cameras are good at processing H.265 others are better at H.264 .. so this can be an issue for added latency. You need to test it.
B) FPS - each frame takes time to process .. again, depends on the camera and it's load. If you are not doing any smart analytics in the camera on the frames, then the camera should be able to handle the max frames in the spec and code it to H.264 or H.265 and send at basically the fastest speed the camera can handle. When you have the camera doing additional processing you may see additional latency within the camera itself. ( each camera behaves differently .. so you do want to test the issue if this is a significant issue where you want minimal latency .. for most of us we're ok with the camera doing some analytics as that is the nice benefit of IP cameras which can do more heavy lifting )
Thus, check H.264 vs H.265 latency, and settings on camera for analytics ( or image enhancement even .. really depends on the cameras, newer more expensive cameras can do a lot more than older and cheaper cameras .. better compute in them )
3) Each recording device, viewing device in the setup needs to be checked also.
Decoding H. 264 or H.265 can add significant latency also .. some hardware software / systems are better with decoding H.264 .. so you need also check that.
For example some NVRs are good with recoding, but once you also it to also decode for display it adds significant latency.