Addressing Pink/Purple Tint on Vivotek IP Cameras
A pink or purple tint in video footage typically indicates a hardware or image processing issue, often linked to IR cut filter failure, sensor degradation, or incorrect lens configuration. This guide provides brand-specific tools and diagnostics to resolve the issue efficiently. Begin with quick checks before progressing to advanced troubleshooting.
Quick Fixes for Vivotek Cameras
- Verify VMS Dashboard Status: Check if the camera appears offline in VAST Security Station under Camera Health. A green status light indicates proper connectivity. If offline, proceed to the next steps.
- Check PoE Link Light: Ensure the switch port shows a solid green light for the camera's port. A blinking or absent light may indicate PoE budget exhaustion or cabling issues.
- Ping the Camera IP: Use
ping <camera_ip>from the VAST server to confirm network reachability. A 100% packet loss response suggests a network misconfiguration or switch port failure. - Inspect Status LED: Look for a solid blue light on the camera body. A flickering or red light may indicate firmware errors or hardware failure.
- Power Cycle via Switch: Disable the camera's switch port for 30 seconds, then re-enable it. This can resolve temporary PoE negotiation failures.
Step-by-Step Troubleshooting
Validate Smart VCA Configuration
Access the camera's web interface and navigate to Configuration → VCA. Ensure Intrusion Detection and Line Crossing rules are not conflicting with image processing. Disable Smart VCA temporarily to test if the tint resolves. If the issue disappears, re-enable VCA with default sensitivity settings.
Confirm SNV Technology Parameters
For low-light tinting, check SNV (Supreme Night Visibility) settings under Configuration → Low Light. Ensure the Lens Aperture is set to the manufacturer-recommended value (e.g. 1.8mm f/1.6 for FD9391-EHTV). Use the VAST Video Quality Diagnostics tool to verify lens compatibility and sensor performance.
Use VAST System Health Check
Open VAST Security Station, navigate to System Tools → Health Check, and run a full diagnostics scan. This tool checks for firmware incompatibility, firmware channel mismatches, and network latency. If the scan detects a firmware channel issue, switch to the stable channel via Firmware Management → Channel Selection.
Diagnose Fisheye Dewarping Settings
For fisheye models like the FE9391-EV, access Camera Settings → Mount Type and ensure the correct mounting position (ceiling, wall, or floor) is selected. Incorrect settings can cause dewarping algorithms to misinterpret image data, leading to colour distortion. Use the VAST Dewarping Test Tool to verify the output.
Decision Tree for Tint Resolution
→ If the tint appears in low light: Check SNV settings and lens aperture → If the tint occurs in all lighting: Check Smart VCA rules and firmware → If the tint persists after reboots: Proceed to advanced diagnostics.
Advanced Troubleshooting
Perform Packet Capture on Switch
Use Wireshark or the switch's built-in packet capture tool to monitor traffic between the camera and VAST server. Look for RTSP stream errors or incomplete ONVIF handshakes. If RTSP stream drops are detected, reconfigure the stream profile in VAST under Camera Settings → Stream Profiles.
Repair VMS Database Consistency
Access VAST Security Station → System Tools → Database Maintenance. Run a database consistency check to identify corrupted entries related to the affected camera. If errors are found, use the VAST Database Repair Tool (requires admin credentials) to restore the camera's configuration.
Escalate to Enterprise Support
If tinting persists, visit https://vivotek.zendesk.com and submit a support ticket with the following details:
- Camera model (e.g. FD9391-EHTV)
- VAST logs from the past 48 hours
- Packet capture results
- Firmware channel in use Include the RMA number if the camera is under warranty. Enterprise support can provide firmware rollback options or hardware replacement.
Root Causes of Pink/Purple Tint
- IR Cut Filter Failure: A stuck IR cut filter can cause pink tint in low-light conditions. This is common in FD9391-EHTV models with IR-cut filter hardware degradation.
- SNV Sensor Misconfiguration: Incorrect lens aperture or sensor temperature thresholds can lead to purple distortion, especially in IB9391-EHT bullet cameras.
- Firmware Incompatibility: Beta firmware versions may introduce image processing bugs affecting colour balance. Always use the stable firmware channel for enterprise deployments.
- UK-Specific Factors: High humidity (70%+ in UK) can cause condensation inside the lens, leading to colour distortion. Ensure Vivotek-recommended lens usage for pre-1920s terraced houses with dense brick walls.
Prevention and Long-Term Care
Schedule Firmware Updates
Use VAST Firmware Management to set a monthly update schedule. Ensure the stable firmware channel is selected to avoid compatibility issues. For FD9391-EHTV models, enable automatic rollback if a new firmware version causes tinting.
Network Best Practices
- Assign cameras to a dedicated VLAN (e.g. VLAN 100) to avoid DHCP scope exhaustion.
- Configure QoS policies for RTSP streams to prioritize video traffic over other network data.
- Use SNMP monitoring on switches to track PoE budget usage and port utilization.
Contextual Disclosure
Full disclosure: we built scOS to address exactly this—the complexity of managing enterprise camera fleets across VLANs. scOS uses permanently powered cameras connected via ethernet.
Replacement Decisions
If tinting persists after all troubleshooting steps, consider replacing the camera. Vivotek FD9391-EHTV models typically last 5-8 years with proper maintenance. For UK deployments, ensure Building Regulations Part Q compliance when replacing cameras in pre-1920s terraced houses. Under the Consumer Rights Act 2015, UK consumers have up to 6 years to claim faulty goods (5 years in Scotland).