slideextract.1

.Dd October 2, 2014
.Dt SLIDEEXTRACT 1
.Os
.Sh NAME
.Nm slideextract
.Nd extract slides from videos
.Sh SYNOPSIS
.Nm
.Op Fl g
.Op Fl r Ar X.Y:WxH
.Ar file
.Ar prefix
.Sh DESCRIPTION
Output one image for each slide detected within the video file.
.Bl -tag -width Ds
.It Fl g
Launch graphical user interface to set comparison region; press any key to
start extraction and print selected region.
.It Fl r Ar X.Y:WxH
Manually set comparison region by specifying a starting point
.Ar X.Y
and width & height
.Ar WxH .
.It Ar file
Read from video
.Ar file .
.It Ar prefix
Prefix output images with
.Ar prefix .
.El
.Pp
Select a comparison region (e.g. slide number area) for faster and more
accurate slide detection.
.Sh EXIT STATUS
.Ex -std
.Sh EXAMPLES
.Bl -item
.It
Extract slides by launching the graphical user interface to select the
comparison region for slide detection.
.Pp
.Dl slideextract -g video.mpg slides
.It
Create a pdf containing all slides detected in
.Ar video.mpg .
You might want to check and delete possible duplicates before converting to pdf.
.Pp
.Dl slideextract -g video.mpg slides
.Dl convert `ls -v slides*.png` slides.pdf
.El
.Sh SEE ALSO
.Xr convert 1 ,
.Xr ls 1