blind

suckless command-line video editing utility
git clone git://git.suckless.org/blind
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blind-unpremultiply.1 (671B)


      1 .TH BLIND-UNPREMULTIPLY 1 blind
      2 .SH NAME
      3 blind-unpremultiply - Unpremultiply the alpha channel of a video
      4 .SH SYNOPSIS
      5 .B blind-unpremultiply
      6 [-xyz]
      7 .SH DESCRIPTION
      8 .B blind-unpremultiply
      9 reads a video from stdin and divides the colour
     10 with the alpha value for each pixel, and prints
     11 the resulting video to stdout, effectively
     12 undoing affects of
     13 .BR blind-unpremultiply (1).
     14 .SH OPTIONS
     15 .TP
     16 .B -x
     17 Do not modify the X channel (the first channel).
     18 .TP
     19 .B -y
     20 Do not modify the Y channel (the second channel).
     21 .TP
     22 .B -z
     23 Do not modify the Z channel (the third channel).
     24 .SH SEE ALSO
     25 .BR blind (7),
     26 .BR blind-premultiply (1)
     27 .SH AUTHORS
     28 Mattias Andrée
     29 .RI < maandree@kth.se >