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LED Volume Maximum Speed / Frame Rate Limits — ~120fps, Phantom Not Achievable

Summary

LED volume virtual production is limited to approximately 120fps maximum frame rate — constrained by the LED panel refresh rate and the highest stable genlock frequency from standard sync generators (AJA Gen10 etc.). This means high-speed photography at Phantom/Flex camera speeds (1000fps+) is not achievable on LED volumes. The LED panel cannot refresh fast enough to keep up with the camera shutter, resulting in visible banding or black frames when attempting high-speed capture in front of an LED wall. Plan LED volume shoots with this constraint: standard frame rates up to 120fps are achievable; anything above that requires a different production approach (practical backgrounds, green screen, etc.).

Community Guidance

[RESOLVED] LED Volume Frame Rate is Limited to ~120fps

Community consensus

The maximum effective frame rate for LED volume virtual production is approximately 120fps. The constraints are:

  1. LED panel refresh rate: Consumer and professional LED panels typically refresh at 120Hz or 240Hz. At refresh rates above 120Hz, panels require very specific driving hardware and are not universally supported.
  2. Sync generator output: AJA Gen10 and similar sync generators produce stable genlock signals up to 120fps (1920x1080p120 or 4K30) in standard configurations.
  3. Unreal Engine rendering speed: The GPU must render a frame before the LED wall refreshes. At 120fps, the Unreal PC has ~8ms to render each frame.

Community: "LED volumes max out at about 120fps. Phantom is not achievable. If you need high speed, use green screen or practical backgrounds."

confidence_score: 0.90

[INFORMATIONAL] Phantom / High-Speed Cameras on LED Volumes

Community

High-speed cameras (Phantom VEO, Phantom Flex, Fastec, etc.) typically require frame rates of 500fps–4000fps for dramatic slow-motion. An LED wall refreshing at 120Hz cannot illuminate the sensor correctly at these speeds — most exposures will either capture the LED wall mid-refresh (banding) or catch the panel at different brightness levels across the frame. High-speed photography in virtual production environments requires purpose-built high-refresh LED systems not commonly available on rental stages.

confidence_score: 0.88