VIDEO LOSS ON SECURITY CAMERAS?
Video loss on security cameras comes in different forms.
For instance, a CCTV surveillance system loses video feeds on one or all cameras, displaying video loss at the same time.
CCTV camera gets a loose connection, goes black at night, or gets no video with surveillance camera showing a black screen.
Sometimes, the camera video flickers on and off, showing lines on the screen and monitor. Or the H.264 DVR gets no picture, camera not working and etc.
If you have encountered other problems when using security cameras, check out these posts for feasible solutions:
Security Cameras Won’t Work
IP Camera WiFi Issues
Security Cameras Video Loss – Possible Causes & Troubleshooting
We have heard many users complaining about video loss problems on CCTV/IP cameras
In general, the issue of “video loss” on CCTV surveillance cameras ( DVR/NVR), in many cases, comes down to several factors:
- Insufficient Power Supply
The insufficient power supply is, very often, the culprit of the video loss on one or all security cameras, CCTV video loss at night, video signal loss on screen, camera going black at night, or camera video flickering on and off.
Here are some common reasons for insufficient power supply to CCTV cameras:
- Loose cable connection
- PoE switch or PoE injector
- Cable is too long, or one cable is supplying too many cameras at once
- Faulty power cables (old, damaged, degraded or cut)
Loose cable connection, for example, between DVR/NVR with cameras, between CCTV cameras and monitor or screen, power adapter, or any possible loose connection in camera power supply could cause video loss.
Double-check all power connections, power splitters, cable connectors, and etc. to exclude connection issues. Switch ports to make sure the DVR/NVR port is providing power to the cameras.
Connect the IP cameras directly to the NVR (if there is any) instead of via a PoE switch because the PoE switch could potentially not supply insufficient power to the IP cameras.
Especially the PTZ IP cameras or night vision IR security cameras, which draw more electricity than those don’t come with PTZ or night vision (click here to learn more about security camera power consumption).
If PoE switches or PoE injectors are necessary, make sure you choose PoE switches or injectors properly.
Besides, try using shorter BNC or Ethernet cables to power surveillance cameras system and avoid using low-quality extension cables or extension cords.
If you are using battery-powered security cameras, make sure the battery is not dead or charged either via power adapter or solar panel.
- POWER SPIKE & INTERFERENCE
This can cause sudden video loss on security cameras, all CCTV cameras black screen, a camera with the electrified surface, the camera with a vertical/horizontal line, or serious damage to the camera circuit board or other components.
Here are some common reasons for power spike & interference:
- Mounting security camera to a metal/conductive surface
- Lightning strikes
- Strong electrical currents interference from nearby electrical equipment
To resolve such issue, try using power surge protectors or lightning surge protectors to protect your CCTV cameras from a lightning strike.
UPS (Uninterruptible Power Supplies) units will ensure power supply for all cameras when there is a power outage, mitigating concerns for camera power-off.
Besides, if it’s hard not to mount your camera to anything other than a metal/conductive surface, add a block of wood in between.
- WRONG IP/PASSWORD,WEAK BANDWITH
Video loss or weak video signal among WiFi security cameras and systems could be caused by unstable network connections, weak WiFi connection or low internet bandwidth.
wrong IP address or password cand also cause video loss,signal loss.
Here are common reasons for network-induced video loss:
- Long distances between wireless security cameras and home routers
- Too many barriers between your camera & WiFi router
- WiFi signal interruption & interference
- Insufficient bandwidth via PoE switch or NVR
- The loose connection between BNC connector and security cameras or H.264 DVR
BNC connector, which is commonly used on thin Ethernet network cables and network cards to transmit signals, however, unexpectedly and frequently, explains the constant signal loss and video loss on PoE home surveillance cameras or H.264 DVR.
Some users set up their home surveillance system by connecting the cameras to multiple PoE switches before connecting it to the NVR or other network storage like NAS.
In such cases, video loss or camera not recording is likely to occur due to the bandwidth and network traffic.
In addition, a PoE switch or injector, if being loose or cut, also results in signal transmission disruption and video loss in the process.
If you happen to have wireless security cameras installed, camera video loss displaying during live view could be the result of WiFi signal interruption, be it as a signal drop or signal loss.
Once the wireless cameras’ connection with video recorders was severed, it’s impossible to upload or stream video feed on any devices.