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From "Bruno P. Kinoshita (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata
Date Sat, 18 Nov 2017 03:52:01 GMT

    [ https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16257909#comment-16257909
] 

Bruno P. Kinoshita commented on IMAGING-205:
--------------------------------------------

I can reproduce it. Though a bit different, the result.

I used 20171030_214812.jpg, and the code I posted before. Got odd offsets, but for GPSLongitude
and Model only. The rest of the data seems to be good.

Really weird, will have to slowly understand the code, in order to fully understand what's
going on. Thanks again for the input samples.

> Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata
> -------------------------------------------------------------------
>
>                 Key: IMAGING-205
>                 URL: https://issues.apache.org/jira/browse/IMAGING-205
>             Project: Commons Imaging
>          Issue Type: Bug
>          Components: imaging.*
>            Reporter: Joakim Knudsen
>            Assignee: Bruno P. Kinoshita
>            Priority: Critical
>         Attachments: 20171030_214812.jpg, 20171030_214812_copy_desktop.JPG, 20171030_21481_COPY.jpg,
DSC_5506.JPG, DSC_5506_copy_desktop.JPG, Gaboxjellyfish-changedexifmetadata.jpg, Gaboxjellyfish.jpg,
after.html, before.html
>
>
> I'm using the "last stable version" of Apache Sanselan 0.97 in an Android project (app).
I have not upgraded to Commons Imaging yet, since the website says there is no stable release
yet. Meanwhile, there are bugs in Sanselan. 
> If I run the [sample code method WriteExifMetadataExample.changeExifMetadata|http://svn.apache.org/repos/asf/commons/proper/sanselan/trunk/src/test/java/org/apache/sanselan/sampleUsage/WriteExifMetadataExample.java?p=820841]
on an image, which updates the Apterture and GPS tags, the resulting image fails to validate
(through Phil Harvey's [ExifTool software|https://sno.phy.queensu.ca/~phil/exiftool/]):
> {noformat}
> > exiftool.exe -validate -error -warning -a "..\20171030_21481_COPY.jpg"
> Validate                        : 19 Warnings (17 minor)
> Warning                         : [minor] Odd offset for IFD0 tag 0x010f
> Warning                         : [minor] Odd offset for IFD0 tag 0x011a
> Warning                         : [minor] Odd offset for IFD0 tag 0x011b
> Warning                         : [minor] Odd offset for IFD0 tag 0x0131
> Warning                         : [minor] Odd offset for IFD0 tag 0x0132
> Warning                         : [minor] Odd offset for ExifIFD tag 0x829a
> Warning                         : [minor] Odd offset for ExifIFD tag 0x829d
> Warning                         : [minor] Odd offset for ExifIFD tag 0x9003
> Warning                         : [minor] Odd offset for ExifIFD tag 0x9004
> Warning                         : [minor] Odd offset for ExifIFD tag 0x9202
> Warning                         : [minor] Odd offset for ExifIFD tag 0x9205
> Warning                         : [minor] Odd offset for ExifIFD tag 0x920a
> Warning                         : [minor] Odd offset for ExifIFD tag 0x9286
> Warning                         : Non-standard count (1) for GPS tag 0x0001 GPSLatitudeRef
> Warning                         : [minor] Odd offset for GPS tag 0x0002
> Warning                         : Non-standard count (1) for GPS tag 0x0003 GPSLongitudeRef
> Warning                         : [minor] Odd offset for GPS tag 0x0004
> Warning                         : [minor] Odd offset for IFD1 tag 0x011a
> Warning                         : [minor] Odd offset for IFD1 tag 0x011b
> {noformat}
> I need some advice on how to proceed here. Since Sanselan does not appear to do what
it should (even on very basic metadata editing), am I correct to assume that the current version
of Commons Imaging does a better job? :-)



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