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F_DeFlicker2

F_Deflicker2 is used to remove flicker - particularly flicker that is localized and dependent on the geometry of the scene (that is, flicker that is not present across the whole of the image), such as that caused by an un-synchronized fluorescent light in a shot.

NOTE: F_DeFlicker2 looks at input frames outside the current frame when performing calculations, and therefore can be a computationally expensive node. As such, using more than two instances of F_DeFlicker2 in a node tree will dramatically increase render times. It is strongly advised therefore, that you render each instance out separately.

Inputs and Controls

Connection Type	Connection Name	Function
Input	Src	The sequence requiring deflicker.

Control (UI)	Knob (Scripting)	Default Value	Function
F_DeFlicker2 Tab
DeFlicker Amount	amount	0.3	Reduces flicker without removing it entirely; lower values leave more flicker behind.
Block Size	blockSize	9.6	Defines the width and height of the control block (in pixels) centered around a particular pixel analysed by the deflicker algorithm. NOTE: The default value avoids the loss of detail and noisy motion fields associated with higher and lower BlockSize, and rarely needs adjusting.
Use Motion	useMotion	enabled	Enables a second deflicker pass using motion-compensated frames. This can improve results in areas where there is fast motion, where the initial deflicker pass may have introduced blurring.
Vector Detail	vectorDetail	0.2	Set the density of the motion vectors used when UseMotion is turned on. The maximum value of 1 generates one vector per pixel, producing the most accurate vectors, but taking longer to render. The default value of 0.2 generates a vector at every fifth pixel.
Analysis Range	range	2	The number of frames searched each side of the current frame when calculating the flicker. Higher values may give better results, but can also bring in erroneous information and take longer to process.
About	about	N/A	Displays a dialog containing information about this node.