man/blind-extend.1


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.TH BLIND-EXTEND 1 blind
.SH NAME
blind-extend - Add margins to a video
.SH SYNOPSIS
.B blind-extend
[-l
.IR left ]
[-r
.IR right ]
[-a
.IR above ]
[-b
.IR below ]
[-t]
.SH DESCRIPTION
.B blind-extend
reads a video from stdin and prints a version of it,
where extra space has been to its sides, to stdout.
.SH OPTIONS
.TP
.BR -l " "\fIleft\fP
Extend the video by
.I left
pixels to the left side of the video.
.I left
most be a non-negative integer.
.TP
.BR -r " "\fIright\fP
Extend the video by
.I right
pixels to the right side of the video.
.I right
most be a non-negative integer.
.TP
.BR -a " "\fIabove\fP
Extend the video by
.I above
pixels to the top of the video.
.I above
most be a non-negative integer.
.TP
.BR -b " "\fIbelow\fP
Extend the video by
.I below
pixels to the bottom of the video.
.I blelow
most be a non-negative integer.
.TP
.BR -t
Instead of adding transparent pixels, draw the end
of the input videos in the new room, such that the
right-most part of the video has is put side-by-side
with the left-most part of the video, and analogously
for the other sides.
.SH REQUIREMENTS
.B blind-extend
requires enough free memory to load two full frames into
memory, one of the size of the source video's frames,
and one of the size of the target video's frames. A frame
requires 32 bytes per pixel it contains.
.B blind-extend
has not been optimised for memory usage, but instead
for code simplicity.
.SH SEE ALSO
.BR blind (7),
.BR blind-crop (1)
.SH AUTHORS
Mattias Andrée
.RI < maandree@kth.se >