Flicker

A gizmo that allows you to analyze an area and match flicker or deflicker. It use the curve tool and automates the process of applying the data to a grade node for you properly. You can also modify the curves by multiplying or adding. You can normalize the curve data between 0 and 1 and use that in a dissolve to use a certain grade or setup for the lower values and another for the higher values.

Version History

2.2 – Removed legacy nodes inside group
2.1 – Added the info tab with links to website and help documentation
2.0 – Full rewrite. The node has been simplified and the Expressions have been written again to include the ability to alter the curve data with Tint, Multiply and Add functions.
A button has been added to generate an external grade node and you can now properly define a range to normalize between 0 and 1 for use in the switch, dissolve and blend nodes.
1.7 – Fixed the normalize button so it builds the curve based on the user input frame range.
1.65 – Added the channels drop down to the node.
1.6 – Added a pop up dialogue for frame range on the normalize button
1.5 – Added a normalize function to take the highest and lowest values and fit them between 0 and 1
1.4 – a mask input was added, you can add a mask in here to furth isolate the area that the curvetool will compute.
1.3 – Added both an add and multiply functions to the AVG intensity data.
1.2 – Removed the Max/Min option for now. It wasnt giving the correct results
1.1 – Added AVG Intensity Data with the curves normalized to 1 so you can drag these to your own grade node and the ability to modify the curves with a multiply on the values.
1.0 – First version of Flicker with the option to use average intensities or max/min

Features

Deflicker and Flicker

The operations from the curve tool have been promoted so you can analyze a defined area and it will automatically remove flicker or add it to what ever the node is connected to. You can define a reference frame and it will have no effect on that frame and adjust values surrounding the reference frame.

Tint, Multiply and Add

Here you can modify the curve values if you need more interactive or to add color. Open your curve editor and adjust these values to see what it is doing. The multiply will stretch the curve from the reference frame and add will move the curve up and down.

AVG Intensity Data

In this section you can create an external grade node that is expression linked to the Flicker node. You can also copy the values from the flicker data section as well. Below this are the original curve tool data if you need to access those for any reason.

Normalize data

After you analyze a plate you can normalize the curve data between 0 and 1. This is useful if you have a plate that has extreme changes that require different setups for the brighter and darker values. You can then drag this normalized curve into a Dissolve, switch or blend node and it will automatically use the setup that’s appropriate for each situation.

Unpremult and masking

You can **Unpremult** the internal grade node if you have an alpha channel and the **Mask** function can also remove information before you analyze the plate.

Properties

Example

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