Im using a Raspberry Pi running Raspbian Wheezy as a digital photo frame. The Pi is configured to autologin on boot and execute a bash script that starts fbi as a slideshow, like so:
fbi -noverbose -a -t 10 /home/pi/Pictures/*.jpg /home/pi/Pictures/*.png
Ive noticed that any portrait photos (ie photos that are taller than they are wide) are automatically rotated 90 degrees so that appear as landscape.
If I remove the -nonverbose switch, the dimensions are displayed underneath each image and what was once a 480x640 pixel image is displayed as 640x480. Removing the -a autozoom switch doesnt help either.
Can anyone help get my photos displaying in their original orientation regardless of aspect ratio?
I know this issue is a little old, but I've been running into this issue as well and think I found the solution this morning. I think it has to do with the EXIF data rotate flag. From what I understand, all programs can handle this flag differently, or not even acknowledge it. So I believe the solution is to rotate the images and save them that way ignoring the EXIF data.
I plan on doing it using a windows program I found located here: http://www.makeuseof.com/tag/are-your-iphone-photos-refusing-to-rotate-in-windows-explorer-here-is-the-solution/