blind-time-blur - Draw new frames on top of old frames with partial alpha
reads a video from stdin and a mask video from
. The first frame from the video is printed to stdout as
is, and the first frame from the mask video is ignored. Succeeding frames are
drawn on top of the last frame printed to stdout, with its alpha cannel
multiplied pixel-by-pixel by the product of the luminosity and the alpha from
corresponding pixel in the mask video, and then printed stdout.
If stdin is longer than alpha-stream
, the remainder of stdin is printed
without any changes. If stdin is shorter than alpha-stream
remainder of alpha-stream
is ignored but may be partially read.
Mattias Andrée <email@example.com