Geotagging, then using jhead results in message 'Suspicious offset of first Exif IFD value'

[skorbut]

What steps will reproduce the problem?

1. Geotag a JPEG image using a GPX track
2. Adjust the timestamp of the image using "jhead -ta"

What is the expected result?

jhead will adjust the timestamp without indication of an error.

What happens instead?

jhead reports:

Nonfatal Error : 'thefile.jpg' Suspicious offset of first Exif IFD value
Modified: thefile.jpg

I'm not sure if this is an indication of a problem of any kind but it's certainly not reassuring having to see this message.

Please provide any additional information below. Attach a screenshot if possible.

JOSM Revision: 8800
Jhead version: 2.97 Compiled: Apr 28 2013

[simon04]

I cannot reproduce using source:trunk/data_nodist/exif-example_direction.jpg. Please provide an example image

final File in = new File(TestUtils.getTestDataRoot(), "exif-example_direction.jpg");
ExifGPSTagger.setExifGPSTag(in, new File("/tmp/foobar.jpg"), 12, 34, new Date(), 12.34, Math.E, Math.PI);

/tmp$ jhead -ta+1:05 foobar.jpg                
Modified: foobar.jpg

[skorbut]

I uploaded a new picture and a suitable (faked) GPX track (timezone may need adjustment to match).

The originally linked file exif-example_direction.jpg seems a bit suspicious: When I open it and try to auto-guess the time-offset, JOSM reports:

The selected photos do not contain time information.

However, jhead (with only the filename as argument) reports

Date/Time    : 2010:05:15 17:12:05

from which I conclude that the time information is available.

[simon04]

I added a failing unit test: [o32037]

[bastiK]

Reported to commons imaging in ​IMAGING-180.