On Wed, May 27, 2009 at 07:11:15PM -0500, Richard Laager wrote: > On Wed, 2009-05-27 at 21:30 +0200, Bill Allombert wrote: > > On Wed, May 27, 2009 at 02:10:00PM -0500, Richard Laager wrote: > > > > Hello Richard, > > > > > From the man page: > > > NAME > > > jpegtran - lossless transformation of JPEG files > > > ... > > > ... But by the same token, jpegtran cannot perform lossy > > > operations > > > such as changing the image quality. > > > > Only when applied to JPEG files, not EXIF files with are not valid JPEG > > files according to the JFIF standard. (It is not possible for a file to > > be both EXIF and JFIF compliant). If you want to manipulate EXIF files, > > use exif software. > > Aside from people that work on these file formats directly, everyone > lumps these together as "JPEG files" in their head and when talking > about them.
Consider that libjpeg6b was written in 1998, and EXIF did not exist yet. > More to the point, jpegtran works with my "EXIF files". It properly > rotates them 90 degrees as desired. If I specify "-copy all", it even > properly copies my EXIF metadata. The man page refers to "EXIF" in the > documentation of "-copy all". How is a user to know that this isn't > "exif software" and that they should use something else? > > This caused me data loss (even though it was just EXIF metadata). I know > there are people that care about their EXIF metadata a lot more than me, > though. If you want to use EXIF file, please install and use exiftran which is the same as jpegtran but for EXIF file. > Are you opposed to all of my options (even #5, adding a note to the top > of the man page)? I'm not necessarily asking you to do the coding > either. If you want to, that's great, but I can see about generating a > patch if there's a solution you like. It is not so much that I am opposed to them, but rather that you are basically asking jpegtran to do what exiftran is already doing. Cheers, -- Bill. <ballo...@debian.org> Imagine a large red swirl here. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
