Transform digital camera jpeg images \# \#
exiftran [options] file1 file2 ... fileN
exiftran -i [transform options] [others options] file1 file2 ... fileN
exiftran -o outputfile [transform options] [other options] inputfile
exiftran -d file1 file2 ... fileN > exifinfo
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Exiftran is a command line utility to transform digital camera jpeg images. It can do lossless rotations like jpegtran(1), but unlike jpegtran(1) it cares about the EXIF data: It can rotate images automatically by checking the exif orientation tag; it updates the exif informations if needed (image dimension, orientation); it also rotates the exif thumbnail. It can process multiple images at once. \# \#
-a
Automatic (using exif orientation tag).
-9
Rotate by 90 degrees clockwise.
-1
Rotate by 180 degrees clockwise.
-2
Rotate by 270 degrees clockwise.
-f
Mirror image vertically (top / bottom).
-F
Mirror image horizontally (left to right).
-t
Transpose (across UL-to-LR corner).
-T
Transverse (across UR-to-LL corner).
-nt
Don't transform exif thumbnail.
-ni
Don't transform jpeg image. You might need this or the -nt option to fixup things in case you transformed the image with some utility which ignores the exif thumbnail. Just generating a new thumbnail with -g is another way to fix it.
-no
Don't update the orientation tag. By default exiftran sets the orientation to "1" (no transformation needed) to avoid other exif-aware applications try to rotate the already-rotated image again. \# \#
-h
Print a short help text.
-d
Dump exif data for the file(s).
-c text
Set jpeg comment tag to text.
-g
(re)generate exif thumbnail.
-o file
Specify output file. Only one input file is allowed in this mode.
-i
Enable inplace editing of the images. Exiftran allows multiple input files then. You must specify either this option or a output file with -o for all operations which modify the image (i.e. everything but -d right now).
-b
Create a backup file when doing inplace editing (imply -i).
-p
Preserve timestamps (atime + mtime) when doing inplace editing (imply -i). \# \#
Autorotate all jpeg files in the current directory:
exiftran -ai *.jpeg
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exif(1), exiftags(1), jpegtran(1) \# \#
Gerd Hoffmann <[email protected]> \# \#
Copyright (c) 2002-2012 Gerd Hoffmann <[email protected]>
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.