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Hidden by default, these controls only appear when you set Deflicker Setting to Advanced Controls, and let you choose how to detect motion in the scene so that flickering may be correctly addressed relative to the motion of subjects and items within the frame where it appears.
— Frames Either Side: Specifies the number of frames to analyze to determine what’s in motion. Higher values are not always better; the best setting is, again, scene dependent. The default is 3.
— Mo.Est. Type: Picks the method DaVinci Resolve uses to analyze the image to detect motion. Despite the names of the available options, which options will work best is highly scene dependent. The default, Faster, is less processor intensive, but less accurate, however this can be an advantage and actually do a better job with high detail images that would confuse the Better option. Choosing Better is more accurate, but more processor intensive, and Better will try harder to match fine details which can sometimes cause problems. None lets you disable motion analysis altogether, which can work well (and will be considerably faster) in situations where there’s no motion in the scene at all. The default is Better.
— Motion Range: Three settings, Small, Medium, and Large, let you choose the speed of the motion in the frame that should be detected.
— Luma Threshold: Determines the threshold above which changes in luma will not be considered flicker. The range is 0–100, 0 deflickers nothing, 100 applies deflickering to everything.
The default is 100.
— Chroma Threshold: Determines the threshold above which changes in chroma will not be considered flicker. The range is 0–100, 0 deflickers nothing, 100 applies deflickering to everything. The default is 100.
— Luma Chroma Same Threshold: Lets you choose whether to gang the Luma and Chroma Threshold sliders or not.
— Motion Threshold: Defines the threshold above which motion will not be considered flicker.
Speed Optimization Options
Closed by default, opening this control group reveals two controls:
— Reduced-Detail Motion checkbox: On by default, reduces the amount of detail that’s analyzed to detect flicker. In many cases, this setting makes no visible difference but increases processing speed. Disable this setting if your clip has fine detail that is being smoothed too aggressively.
— Limit Analysis Area checkbox: Turning this on reveals controls over a sample box that you can use to limit deflickering to a specific region of the image. This option is useful when:
a) Only one part of the image is flickering, so focusing on just that area speeds the operation considerably, or
b) Part of the image is being smoothed too much by deflickering that’s fixing another part of the image very well.