Mark_M

What makes an LPC/LPR camera: High noise to signal ratio (often said in dB). Large focal length (zoom level). Large imaging sensor - suitable size for the resolution. High exposure speed (not necessarily higher FPS). Reolink use cheap quality imaging sensors and cheap quality processors. Here's why: Generally an LPC/LPR camera is 2MP or 4MP. Imaging sensor size matters for light sensitivity on each pixel cell. A general guide: 2MP, use an imaging sensor that is 1/2.8" or larger. At 4MP, an imaging sensor 1/1.8" or larger. For 8MP (you won't use this for LPC/LPR), the sensor should be 1/1.2" or larger. Reolink manufacture a 12MP camera at 1/2.49".... this is an absolute joke of how Reolink use the cheapest quality possible. Why does the cmos sensor size matter? A larger surface area for the imaging sensor can collect more photons of light in a shorter period of time. This means the exposure time can be lower. Lower exposure time means fast moving objects are less of a blur. Reolink and other consumer brands suffer because they use a cheap imaging sensor and to compensate the exposure speed has to be longer. Why lower resolution and more zoom? Optical zoom is far more effective than increasing the resolution. Lower resolution also means less processing power is needed for HLC (High-light compensation) or WDR (Wide dynamic range) so that the headlights and taillights do not blow out the image. Lower image resolution also helps LPR software to recognise the plate in OCR (optical character recognition) because less processing power is needed. IR light is needed for LPC/LPR, this is to illuminate the plate so it appears brighter than light from the headlights/taillights.

If you have manually set an IP address on the NVR, make sure to exclude this from the DHCP range on your router. Or set the NVR to DHCP and create a static IP address map in the router for your NVR. Last year I set a camera's IP address manually and it worked for a day. Then the router did a shuffle of DHCP leases and for some reason it didn't recognise the camera wasn't going to change address. The router then set another device to the same IP address as the camera. Both devices were randomly working until I found the cause.

Awesome to hear you have found a way and solved the issue!

Rebranded Dahua camera? The cheapest camera at a 1/3" cmos sensor...?? It's 2023, should be a 1/1.8" sensor for a 4MP camera. 1/3" is awful for low light.

That DVR looks good. It also supports from IP cameras, which is handy when you start upgrading the cameras to digital ones.

Hikvision is a very well established brand, with consumer to enterprise quality products. Annke tends to OEM Hikvision products. Zosi recorder interface looks like XMeye based system...? I would go with the Hikvision systems over Zosi. Dahua is also a strong competitor to Hikvision. You can buy Amcrest, which is OEM of Dahua. Uniview is also another strong brand. Using an OEM has some benefits; Annke & Amcrest OEM'ing a commercial brand for home user's means they tend to update their phone apps and have a better user interface for home users. - OEM: Original Equipment Manufacture. A fancy way to say it's a rebranded product.

If IT can block a USB drive from working when plugged into a computer, they can block the DVR from accessing the internet on the business's router. They're just being lazy. Terrible idea. A goal of CCTV is to capture as much detail as possible. Videoing the screen loses soo much of that quality. You need to export it off the DVR. I would be telling your company to upgrade the DVR or telling IT department to connect the DVR to the network and stop being lazy creating extra firewall rules.

Ask IT department to connect the DVRs to your company's network and then use Hikvision software on your computer to export/download the footage. Because a USB can have it's data deleted, renamed, alerted and added to. A DVD is read-only data. Police don't want to be held legally responsible of people accusing them of modifying data.

Point to point wireless radios is one thing that might possibly do for your scenario? Something like two Ubiquiti Loco M2's in bridge mode. It's basically a wireless link and depending on models they can easily go miles (but proper alignment is needed).

You can access CCTV forum messages from the message bubble icon at the top right corner of the website. This directs you to www.cctvforum.com/messenger/ .

Subscription usually means you utilise someone else's computer on the internet (someone's server). This is the easiest because you pay them for the work and they are responsible for network security. If you are good with networking, I would look into using a site-to-site VPN on your routers. This may mean purchasing a new router for both sites. What this will do is bridge the two networks together, through an encrypted route. This is NOT a replacement to having an NVR/VMS at the remote site because constantly sending data across the internet is going to encounter a few dropouts occasionally. Having a local recording system also means that building can be self sufficient in the event your own system fails. If you use an NVR at the remote building for redundancy this will likely have an HDMI/VGA output for a monitor. Depending on how far away the TV is from the NVR, you could use 'HDMI over Ethernet' adaptors. If the TV is close then just use an HDMI cable. Or (my favourite), as mentioned on ipcamtalk.com forum: There is such a device called a 'TV modulator'/'RF modulator. This takes an input and encodes the signal into the same standard as your country's TV broadcast, you then wire the device into your building's TV antenna wiring and each TV in the building picks it up as a standard TV channel. Some modulators have HDMI input, or IP modulators can take an RTSP stream directly from the cameras/NVR.

Good night vision is nothing below $200usd. Cheaper to just install extra lighting. Drop the hope of getting two-way audio/siren unless the budget per camera doubles. Small PTZ cameras are at least $150usd. A camera need power too..... what's the issue with an NVR because it needs backup power? The camera need backup power on their POE switch anyway! Relying on cloud only is a false sense of security. You need some local storage in case the video being sent to the cloud gets corrupted. An SD card in the camera or NVR can do, most systems use both so if one device fails the other keeps recording. $60 a camera is dreaming. Unless you are wanting to buy a disposable camera from AliExpress with the terrible software. Budget at least $120usd but that will not get you a PTZ or two way audio for the price. With such a tight budget, get a POE camera that has a built-in SD card slot to record to. That saves paying for cloud storage and you can easily intergrade an embedded NVR later down the road.

What brand is your system? It's probably going to be achieved by adding the RTSP URL from the second NVR's channel output to a channel input on the main NVR.

Good luck to you. I've found Reolink to have poor quality and doesn't let you adjust settings for better night performance.

Also cheap cameras at a higher resolution perform awful at night. A good brand of camera will give a specification sheet. For 4k (8MP), you would want near 1/1.2" cmos or larger... not a tiny 1/3" or 1/2.5" cmos sensor. In Reolink's video you can see how the person 'ghosts' into the background at points. https://www.youtube.com/watch?v=Y6Oxhxk8lxM Ghosting happens with a cameras exposure is too long for the amount of movement. A typical reason for a CCTV camera to have a long exposure is because the imaging sensor cannot capture enough light to capture a decent image. You can help reduce motion blur by adding external IR flood lights, but that adds extra power consumption.