Wrong thumbnail orientation after JPEG lossless transformation
Posted: Mon May 29, 2023 2:40 pm
Internal thumbnail rebuild not always work correctly after JPEG lossless transformations
how to reproduce:
1. Take my photos (1. Orientation right-bottom (7), 2. Orientation left-top (5)). Windows explorer and Xn thumbs is ok there
2. In Browser mode select them and do JPEG lossless transformations -> rotate based on EXIF orientation field
3. Now in Browser mode thumbs have incorrect orientation despite everything is ok in Viewer mode or in Windows explorer
In some my experiments thumbnail for the second photo sometimes oriented correctly (and sometimes not) but the first photo always incorrect.
disable caching, rebuild thumbnails, or delete it won't help.
files link https://drive.google.com/drive/folders/ ... sp=sharing
XnViewMP 1.4.5
Windows 11 22H2 x64
how to reproduce:
1. Take my photos (1. Orientation right-bottom (7), 2. Orientation left-top (5)). Windows explorer and Xn thumbs is ok there
2. In Browser mode select them and do JPEG lossless transformations -> rotate based on EXIF orientation field
3. Now in Browser mode thumbs have incorrect orientation despite everything is ok in Viewer mode or in Windows explorer
In some my experiments thumbnail for the second photo sometimes oriented correctly (and sometimes not) but the first photo always incorrect.
disable caching, rebuild thumbnails, or delete it won't help.
files link https://drive.google.com/drive/folders/ ... sp=sharing
XnViewMP 1.4.5
Windows 11 22H2 x64
Thanks to your detailed description I can reproduce