The Power of High Frame Rate LED Walls in Virtual Production

One of the most common questions we get from clients evaluating LED panels is: “What refresh rate do I actually need?” The answer depends on how you’re using the wall — but for virtual production and in-camera visual effects, high frame rates are not optional. They’re essential.

Why Refresh Rate Matters

When a camera films an LED wall, it’s capturing the wall’s refresh cycle. If the wall’s refresh rate is too low relative to the camera’s shutter speed and frame rate, you’ll see banding — horizontal lines that roll through the image. This is the most visible artifact of inadequate refresh, and it’s impossible to fix in post.

Higher refresh rates (3840Hz and above) ensure clean on-camera performance across a range of shutter angles and frame rates. Whether you’re shooting at 24fps for film, 30fps for broadcast, or 60fps for sports, a high-refresh wall eliminates banding concerns.

Scan Rate and Multiplexing

Refresh rate alone doesn’t tell the whole story. The scan rate (often expressed as a ratio like 1/16 or 1/32) determines how many rows of LEDs are lit simultaneously. Lower scan ratios mean fewer rows are active at once, which can cause partial-frame artifacts when the camera’s exposure captures an incomplete refresh cycle.

Panels with higher scan multiplexing (1/8 or 1/4) keep more of the image visible at any given moment, further reducing banding and improving on-camera performance.

Genlock Synchronization

For ICVFX, the LED wall’s refresh must be synchronized with the camera’s frame rate through genlock. This ensures the wall completes a full refresh cycle within each camera frame, eliminating tearing and partial-frame artifacts.

Genlock synchronization requires compatible LED processing (Brompton and Novastar both support this) and proper configuration between the camera, tracking system, and render pipeline.

What We Recommend

For virtual production applications, we typically specify: • 3840Hz+ refresh rate • 1/16 scan rate or better • Genlock-capable processing (Brompton Tessera or Novastar) • Proper frame timing configuration between camera and render nodes

The right combination depends on your specific camera systems, production requirements, and budget. We’ll help you navigate the specs and make the right choice for your stage.