Problem
An LED wall or display refreshes asynchronously with the camera, producing moving dark bands across the background.
Solution
Root Cause / Diagnostic:
Virtual production LED volumes and studio backdrop screens update pixel columns via high-speed scanning multiplexers. When the camera genlock is not locked to the LED processor's sync pulse, black horizontal bars roll continuously through the backdrop.
Actionable Fix:
1. Connect camera genlock (BNC sync input) to the LED processor's master sync generator signal (PTP / Tri-Level Sync).
2. Set camera shutter angle to match the exact duty cycle of the LED wall panels (e.g., exactly 180.0 degrees).
3. View the LED wall through the camera viewfinder; confirm complete synchronization with zero rolling scan bars.
Pro Tip:
Always lock camera sensor scan timing to the LED video processor using hardware Genlock to guarantee zero rolling band artifacts on LED walls.
Virtual production LED volumes and studio backdrop screens update pixel columns via high-speed scanning multiplexers. When the camera genlock is not locked to the LED processor's sync pulse, black horizontal bars roll continuously through the backdrop.
Actionable Fix:
1. Connect camera genlock (BNC sync input) to the LED processor's master sync generator signal (PTP / Tri-Level Sync).
2. Set camera shutter angle to match the exact duty cycle of the LED wall panels (e.g., exactly 180.0 degrees).
3. View the LED wall through the camera viewfinder; confirm complete synchronization with zero rolling scan bars.
Pro Tip:
Always lock camera sensor scan timing to the LED video processor using hardware Genlock to guarantee zero rolling band artifacts on LED walls.