blind-set-luma - Multiply the luminosity of a video
reads a video from stdin and a mask video from
. The video is printed to stdout, with the luminosity of
each pixel multiplied by the product of the luminosity and the alpha value of
the corresponding pixel and frame in the mask video.
If stdin is longer than luma-stream
, the remainder of stdin is printed
without any changes. If stdin is shorter than luma-stream
remainder of luma-stream
is ignored but may be partially read.
In most cases, this is not what you want to use, instead you probably want to
(1) to multiple the X, Y and Z values on one value.
This produces the same affect as reducing the intensity of the light sources,
which is not what blind-set-luma
Mattias Andrée <email@example.com