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.TH BLIND-TRANSITION 1 blind
.SH NAME
blind-transition - Turn a gradient video to transition-gradient video
.SH SYNOPSIS
.B blind-transition
[-ir] [-s
.IR softness-stream ]
.SH DESCRIPTION
.B blind-transition
reads a video from stdin and prints a version of
it to stdout suitable for input to
.BR blind-set-alpha (1)
to for creation an transition effect.
.P
The luma in stdin is used to determine when a
pixel in the video shall be opaque.
.SH OPTION
.TP
.B -i
Invert the transition.
.TP
.B -r
Reverse the transition.
.TP
.BR -s \ \fIsoftness-stream\fP
The luma multiplied by the opacity for each pixel
in each frame in the video from
.I softness-stream
will be used as the transitional softness for that
pixel in the video.
.SH SEE ALSO
.BR blind (7),
.BR blind-set-alpha (1),
.BR blind-dissolve (1),
.BR blind-stack (1),
.BR blind-cone-gradient (1),
.BR blind-linear-gradient (1),
.BR blind-radial-gradient (1),
.BR blind-spiral-gradient (1),
.BR blind-square-gradient (1)
.SH AUTHORS
Mattias Andrée
.RI < maandree@kth.se >
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