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Wontfix? convert -rotate does not transform thumbnail
Posted: 2008-12-22T13:21:40-07:00
by broucaries
Hi,
Doing a convert -rotate on jpeg file does not rotate the exim thumbnail.
(see
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=423891).
I suppose this bug like
viewtopic.php?f=2&t=12355
is a wont fix?
Regards
Bastien
Re: Wontfix? convert -rotate does not transform thumbnail
Posted: 2008-12-22T13:42:15-07:00
by magick
This feature request is on our list of things to do. We currently do not have an ETA on a fix for this problem.
Re: Wontfix? convert -rotate does not transform thumbnail
Posted: 2009-01-04T21:26:56-07:00
by anthony
This problem is not just for rotate, but for any other image manipulation operation as well.
A better approach may be for the thumbnail to be re-generated by a JPEG specific external program.
A program (such as jhead) can replace the thumbnail EXIF image (-st option), though I think it has some limitations. the program can even call ImageMagick (the -rgt option) to regenerate the thumbnail form the actual image, but only if it already exists.
Does anyone else know of JPEG EXIF thumbnail replacement or update alturnatives?
Re: Wontfix? convert -rotate does not transform thumbnail
Posted: 2009-02-10T08:35:40-07:00
by signsrus
It also looks as though if the jpg has already been rotated that it cannot be converted; at least to a png. Is there anyway to just skip reading the exif information or something? Thanks
Re: Wontfix? convert -rotate does not transform thumbnail
Posted: 2009-02-10T18:15:01-07:00
by anthony
signsrus wrote:It also looks as though if the jpg has already been rotated that it cannot be converted; at least to a png. Is there anyway to just skip reading the exif information or something? Thanks
What do you mean '
cannot be converted'???
It should always be able to convert, as long as the JPG is not corrupted!
Re: Wontfix? convert -rotate does not transform thumbnail
Posted: 2009-02-23T12:23:36-07:00
by signsrus
sorry, I mean I can't use -convert to change it into a png.