# Extracts jpeg files with the JFIF magic bytes. These are usually created by
# graphics manipulation programs.
# Depends on jpegtran from libjpeg: http://freshmeat.net/projects/libjpeg/
# See also jpeg-exif
6 string JFIF
0 int32 ffd80000 ffff0000
extension jpg
command jpegtran -copy all -outfile "$1"