std.Levels(clip clip[, float[] min_in, float[] max_in, float[] gamma=1.0, float[] min_out, float[] max_out, int[] planes=[0, 1, 2]])

Adjusts brightness, contrast, and gamma.

The range [min_in, max_in] is remapped into [min_out, max_out].

For example, to convert from limited range YUV to full range (8 bit):

clip = std.Levels(clip, min_in=16, max_in=235, min_out=0, max_out=255, planes=0)
clip = std.Levels(clip, min_in=16, max_in=240, min_out=0, max_out=255, planes=[1,2])

The default value of max_in and max_out is the format’s minimum and maximum allowed values repsectively. Can be specified for each plane individually.

Clip to process.
Controls the degree of non-linearity of the conversion. Values greater than 1.0 brighten the output, while values less than 1.0 darken it.
Specifies which planes will be processed. Any unprocessed planes will be simply copied.