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Be aware of an iMovieHD/iPhoto image rotation glitch
Authored by: rhowell on Oct 26, '05 08:32:33AM

Reading the response above this, I now realize this is a bug with applications that do not recognize the rotate tag within a JPEG file. Nonetheless, some time ago I filed a bug with Apple, number 4236820, marked duplicate:

29-Aug-2005 06:33 PM rhowell:
If I open a JPEG image in Preview.app Version 3.0.1 (389) (say one that is copied to my Desktop from my digital camera), rotate it clockwise or counter-clockwise using Preview's rotate tools, save it, and close Preview, then the following occurs:

Opening the new JPEG picture in Preview shows that it is properly rotated.

Opening the new JPEG picture in any other OS X application (Safari, Mail, Quicktime, etc.) shows the picture with its original orientation, NOT rotated.

This bug does not occur with the PNG format. I have not tested other formats.



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Be aware of an iMovieHD/iPhoto image rotation glitch
Authored by: Anonymous on Oct 26, '05 12:37:21PM

PNG files do not lose quality on recursive savings so there is no point on adding an EXIF tag instead of re-saving the file. JPEG files do degrade so EXIF tags are needed to allow rotation without loosing quality. As I said, if a program does not recognize EXIF tags it is not a bug, it is a lack of a feature. It doesn't seem logical for Safari (for example) to recognize EXIF tags since they are not used on web design (to my knowledge) although you may argue that for the sake of integration EXIF tags should be supported.



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