You can retrieve the existing orientation information via exiftool
as follows:
exiftool -Orientation -n image.jpg
This will display the internal value of the orientation information held in the MIE tags. You can return the value as an English string by omitting the -n
flag. You can find additional information here regarding particular rotation/orientation values.
Changing the orientation data with exiftool
can be done as follows:
exiftool -Orientation=1 -n image.jpg
Here, the orientation is set to 1, indicating no rotation. These numbers are defined as per the EXIF specification; you can see what effect different rotation values have in the link above.
(note: you must use the -n
argument when setting orientation to indicate that the value is numeric. If you forget, exiftool will interpret the orientation=x
number as a string and set the wrong rotation ie. exiftool -orientation=1 image.jpg
will actually set the orientation to 3 which is 'Rotate 180')