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TemporalMedian

This node applies a temporal median filter to the input clip. It outputs each pixel by calculating the median of the current frame, the frame before, and the frame after. This can be useful for removing grain, for example.

Inputs and Controls

Connection Type	Connection Name	Function
Input	unnamed	The image sequence to apply a temporal median filter to (typically, the image sequence to degrain).
mask	An optional image to use as a mask. By default, the temporal median filter effect is limited to the non-black areas of the mask. At first, the mask input appears as triangle on the right side of the node, but when you drag it, it turns into an arrow labeled mask. If you cannot see the mask input, ensure that the mask control is disabled or set to none.

Connection Type

Connection Name

Function

Input

unnamed

The image sequence to apply a temporal median filter to (typically, the image sequence to degrain).

mask

An optional image to use as a mask. By default, the temporal median filter effect is limited to the non-black areas of the mask.

At first, the mask input appears as triangle on the right side of the node, but when you drag it, it turns into an arrow labeled mask. If you cannot see the mask input, ensure that the mask control is disabled or set to none.

Control (UI)	Knob (Scripting)	Default Value	Function
TemporalMedian Tab
channels	channels	all	The temporal median filter effect is only applied to these channels. If you set this to something other than all or none, you can use the checkboxes on the right to select individual channels.
core	core	0.05	If the differences between pixel values on the current, previous, and next frame are greater than this value, those pixels are left unchanged. This is because higher differences between frames probably indicate something other than film grain.
mask	N/A	disabled	Enable the associated mask channel to the right. Disabling this checkbox is the same as setting the channel to none.
mask	maskChannelInput	none	The channel to use as a mask. By default, the temporal median filter effect is limited to the non-black areas of this channel.
inject	inject	disabled	Copies the mask input to the predefined mask.a channel. Injecting the mask allows you to use the same mask further downstream.
invert	invert_mask	disabled	Inverts the use of the mask channel so that the temporal median filter effect is limited to the non-white areas of the mask.
fringe	fringe	disabled	Blurs the edges of the mask.
mix	mix	1	Dissolves between the original image at 0 and the full effect at 1.