Why Is My Camera Feed Turning Pink or Purple (Discolouration)
Video discoloration is a common issue that can disrupt the clarity of footage, and it’s often caused by modified settings related to picture quality, extended exposure to direct sunlight, or malfunctioning (even faulty) IR-cut filter within the camera. When discoloration occurs, it’s frequently noticeable through distinct visual indicators:
- A pink tint or overlay across the image or along the edges of the video.
- A purple hue affecting elements like grass or other parts of the scene.
- Pink or purple splotches appear randomly in the camera’s view.
- Bands of multi-colored lines that disrupt image quality.
Understanding the root causes of these discoloration effects and how to address them can help you maintain clear and accurate video footage.
Here are the troubleshooting steps that you can take:
If doing these troubleshooting steps didn't resolve the issue, then you might have a stuck IR-cut filter which is a mechanical failure. To learn the possible cause of this issue and how to prevent it, click here.
Reboot the Camera
A simple troubleshooting that applies to most electronics is rebooting. Specially if the cameras were working fine before and you didn't change anything, as if it just happens, rebooting the cameras can sometimes fix this issue easily.
- For add-on cameras using power adapter, you can unplug the adapter for for 20 seconds, then plug it back in.
- For add-on cameras powered over Ethernet (PoE) by an NVR, reboot the NVR instead.
- For stand-alone cameras in Swann Security app, you can reboot them by going to their settings and select Advanced Settings then choose Reboot.
Check the Camera Settings
If rebooting didn't resolve the issue, a setting may have changed for some reason. Some cameras have On-screen Display or Image Control that has a lot of settings which can affect picture quality, including IR-cut filter. You can check on this article to learn more: General Idea: On-screen Display (OSD) or Image Control
Choose an option below based on your system.
- On Live View via TV/monitor, highlight a camera.
- Right-click and choose the 4th icon from the left (PTZ).
- Login to the Main Menu with your DVR's password.
- Go to Main Menu using the arrow controls on the left.
- Highlight BUZZER and change LED to BUZZER.
- DAY-NIGHT will appear. Change mode from COLOR to SMART.
- Click on Return.
- After exiting the DAY-NIGHT menu, go straight to SAVE-EXIT
to save the settings and exit out of the OSD MENU - Do not change the DIM and WARNING setting otherwise DAY-NIGHT mode will return to COLOR.
- Login to Setup (Main Menu).
- Go to Display > Live.
- Click on the gear icon under Setup beside the camera you wish to configure.
- Slide Hue and Saturation to reach the desired colour.
- Click on Apply to save.
- Go to Menu > Display > Image Control.
- Look for IR-Cut Mode or Day & Night and set it to Auto
Leading Cause: Stuck IR-cut Filter
A security camera has an IR-cut filter helps a camera capture true-to-life colors during the day and switch to effective night vision when it’s dark. This is also a moving component inside the camera, which means it can get stuck at one point.
If you haven't tried rebooting the camera as mentioned at the beginning of this article, we suggest that you do so as this is the only troubleshooting
Why is it getting stuck?
Here are some reasons why IR-cut filter gets stuck:
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Dust and Debris Buildup: If the camera loses its ingress protection over time, dust and dirt particles can accumulate inside the camera or around the IR-cut filter mechanism, interfering with its movement.
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Humidity and Moisture Exposure: Cameras placed in high-humidity environments or exposed to moisture may suffer from condensation buildup inside the unit, which can cause components to stick or corrode.
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Temperature Fluctuations: Extreme temperatures, especially sudden changes, can impact the delicate mechanics of an IR-cut filter. Cold weather can cause components to contract, and heat can warp or expand them, potentially leading to sticking.
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Mechanical Wear and Tear: Regular wear from continuous use may gradually wear down the internal mechanisms of the filter, especially if the camera switches frequently between day and night mode.
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Electronic Malfunctions: Electrical faults or software issues can disrupt the communication between the camera's sensors and the IR-cut filter, preventing it from moving smoothly.
How can it be prevented?
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Regular Cleaning and Maintenance
- Periodically clean the camera exterior, particularly any moving parts, using a soft brush or compressed air to remove dust and debris.
- Check for signs of dirt buildup around the lens area, as this can be an indicator that the interior may also need cleaning by a professional.
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Control the Environment
- Avoid installing cameras in locations prone to high humidity or direct moisture exposure unless the camera is rated for outdoor or all-weather use.
- In high-humidity environments, consider adding a small desiccant packet inside the camera casing if feasible, to reduce internal moisture.
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Protect Against Extreme Temperatures
- Install cameras in shaded areas to minimize direct sun exposure, which can prevent overheating.
- Use weatherproof housings designed to maintain a stable internal temperature if the camera is placed in an area with extreme heat or cold.
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Update Firmware Regularly
- Ensure your camera firmware is up-to-date. Manufacturers often release firmware updates that can improve performance and resolve issues related to filter mechanics and other electronic components.
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Professional Servicing
- If you notice recurring issues or unusual noises, consider having the camera serviced by a professional to check for wear or mechanical issues before they cause the filter to stick.
- Professional inspection can also catch early signs of wear on mechanical parts, which can be replaced if necessary.
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Limit Frequent Switching
- Position the camera to minimize rapid light changes that may cause it to switch frequently between day and night mode, as excessive switching can increase wear on the filter.
Conclusion
A well-maintained IR-cut filter plays an essential role in the smooth operation of your security camera, ensuring it delivers clear images during both day and night. By understanding the causes behind filter malfunctions and following preventative measures, you can keep your system running efficiently for longer. Regular maintenance, attention to environmental factors, and appropriate handling are simple steps that go a long way toward maximizing the lifespan and reliability of your camera’s IR functionality. With a few proactive steps, you can avoid the frustration of a stuck filter and enjoy a consistently clear view of your surroundings.