OLED Motion Pro: BFI, Flicker and Brightness

Quick Answer

LG uses OLED Motion Pro for black-frame-insertion behavior on supported models. BFI inserts dark intervals between displayed frames to reduce sample-and-hold blur. It can make moving edges easier to follow, but it also reduces light output and can introduce visible flicker or eye strain.

It is not frame generation and does not turn 30 fps content into 60 fps. Availability, strength levels and compatible refresh rates differ by model year and signal mode.

For the underlying display concept, read Black Frame Insertion. Compare it with high frame rate, then use the LG OLED gaming settings guide to keep VRR, refresh rate and low-latency choices separate.

How it differs from TruMotion

Motion interpolation creates intermediate frames and can make film look unnaturally smooth or produce artifacts. BFI inserts darkness without inventing motion. The two techniques have different side effects and should not be described as interchangeable.

When to try it

BFI can be useful for sports, scrolling test patterns or games with a stable frame rate when motion clarity matters more than maximum brightness. It is a preference, not a universal accuracy setting.

Avoid or reduce it when:

• flicker is visible or uncomfortable;
• HDR brightness is the priority;
• the source frame rate is unstable;
• VRR or a high-refresh mode disables the option;
• the room is bright enough that the light loss is distracting.

Setup method

1. Confirm the source frame rate and TV refresh rate.
2. Select the intended picture mode.
3. Start with the lowest available OLED Motion Pro/BFI setting.
4. Compare motion and brightness using the same scene.
5. Disable it immediately if flicker causes discomfort.

Do not copy Low/Medium/High recommendations across generations. Some TVs expose different levels or remove the control under Game Optimizer, VRR, 120 Hz or particular HDR modes.

Gaming considerations

BFI, VRR, 120/144 Hz and low-latency modes are separate features. A television can support each without supporting every combination. Native 120 fps generally offers a different motion result from 60 fps with BFI, and the game must actually render the extra frames.

Check for brightness loss, flicker, input behavior and option availability. If the image drops out or the control disappears, return to a known-good fixed refresh rate and test one feature at a time.

OLED Control's scope

OLED Control can request a supported motion setting on a compatible television and firmware. It cannot add BFI to unsupported hardware, bypass a mode restriction, generate frames or measure motion response. Use the physical TV menu to confirm what webOS actually applied.

Why fast OLED still looks blurred in motion

Fast pixel response removes slow transition smear, but each completed frame remains visible until the next refresh. While the eye tracks a moving object, that held image sweeps across the retina. OLED Motion Pro shortens the illuminated portion of the frame by adding darkness, which can sharpen a tracked edge.

This explains why response time, frame rate and motion persistence are different measurements. BFI improves persistence without adding source positions.

Compare against native HFR first

At native 120 fps, the source supplies twice as many unique positions as 60 fps and reduces frame time from roughly 16.7 to 8.3 ms. That generally improves both response and motion. Sixty fps with BFI may look sharper than ordinary 60 fps but still represents only sixty moments.

For a game offering Quality 60 and Performance 120, establish stable 120 output before deciding BFI is needed. A 30 fps mode with BFI can show double images and uncomfortable flicker.

Model-specific availability

C1/G1 exposed OLED Motion Pro choices that are not identical on C2/G2 or later televisions. Active HDR, Game Optimizer, VRR, refresh rate and input can hide the control. The absence of a menu item is not a reason to force a service command.

LG may use Off/Low/Medium/High or another layout. Compare the level on the exact model rather than transferring one recommendation.

Controlled evaluation

Use a repeatable scrolling sign, sports pan or game training area. Keep camera, frame rate and mode fixed. Compare Off and the lowest level for edge readability, average brightness, duplicate images and flicker. Evaluate for several minutes, not one screenshot.

Phone videos can show rolling bands caused by camera shutter. Direct comfort and visible motion matter more than a social-media recording.

Cadence matching before BFI

Motion Pro works best when the source cadence and the fixed panel refresh form a predictable relationship. For a 60 fps game, first verify that the console or PC is actually delivering a stable 60 Hz signal; uneven frame delivery can remain visible even when the illuminated portion of each refresh is shortened. For 24 fps film, BFI does not create the missing intermediate positions and may make the low cadence look more obviously stepped. Real Cinema or an appropriate 24p playback path addresses cadence handling, while TruMotion interpolation addresses apparent smoothness; neither should be confused with BFI persistence reduction.

On C1/G1, test the available Motion Pro level only after disabling VRR and confirming a fixed compatible refresh rate. On C2/G2 and later sets, LG changed available combinations and menu behavior, so a C1 owner's High setting is not a transferable prescription. If a 120 Hz source makes the control unavailable, do not lower the source to 60 Hz automatically: compare native 120 fps first, because it preserves twice as many real motion samples and usually retains more brightness. Choose 60 Hz plus BFI only when the particular game, room and viewer clearly benefit from the trade.

Comfort and safety

Turn the feature off immediately if it causes headache, eye strain, nausea or obvious flicker. Different viewers have different sensitivity, and lower strobe frequencies are often easier to perceive. BFI is optional; there is no accuracy requirement to tolerate discomfort.

Motion Pro FAQ

Does it reduce input lag?

Not inherently. Illumination changes; the active mode and processing determine latency.

Can it work with VRR?

Some combinations are unavailable because variable timing conflicts with fixed strobing. Follow the exact model menu.

Does it prevent burn-in?

It is not an OLED Care feature. Normal static-content practices remain necessary.

For sports, remember that broadcast frame rate limits the source. BFI can sharpen held frames but cannot recover motion positions the camera never captured.

Sources

• LG GX OLED specification listing OLED Motion Pro
• Blur Busters: LCD motion artifacts and sample-and-hold behavior (secondary)
• RTINGS: Black frame insertion on TVs (secondary)