FFmpeg 5.1.6
Since* 3.2
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Apply Gaussian blur filter.

The filter accepts the following options:

sigma

Set horizontal sigma, standard deviation of Gaussian blur. Default is 0.5.

steps

Set number of steps for Gaussian approximation. Default is 1.

planes

Set which planes to filter. By default all planes are filtered.

sigmaV

Set vertical sigma, if negative it will be same as sigma. Default is -1.

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Commands

This filter supports same commands as options. The command accepts the same syntax of the corresponding option.

If the specified expression is not valid, it is kept at its current value.