On Thu, Oct 23, 2014 at 08:32:57PM +0200, Stéphane Aulery wrote: > retitle 609013 Rotate 90 ° clockwise impossible for this photo (exiftran, > jpegtran, gthumb) > clone 609013 -1 > reassign 609013 libjpeg9 1:9a-2 > found 609013 8b-1 > reassign -1 libjpeg8 8d1-2 > found -1 8b-1 > stop > > Hello, > > This bug is not specific to Exiftran. I can reproduce it with jpegtran, > like you with gthumb : > > $ jpegtran -rotate 90 -outfile photo_rotated_of_180_right.jpg 0.3.jpg > > That's why I think it relates to the libjpeg(8/9) and I reassigns.
I do think the bug is in exiftran. Let's me explain: This file is an EXIF image with an Exif Orientation marker that cause most Exif-compliant image viewers to display the underlying jpeg image rotated by 270°. The command jpegtran -rotate 90 rotates the underlying jpeg image but also remove the Orientation marker. The result is an apparent rotation of 180°. Now, jpegtran need not be aware of the Exif tag, but exiftran should be able to deal with the Orientation marker correctly. (Note: libjpeg-progs include a script exifautotran to fix the orientation, it wokrs fine with this image). PS: please always CC the maintainer of the package you are reassigning a bug to, otherwise they are likely not to notice the bug :) Cheers, -- Bill. <ballo...@debian.org> Imagine a large red swirl here.
