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From "Joakim Knudsen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IMAGING-205) Imaging (Apache Sanselan) produces "odd offsets" in (EXIF) metadata
Date Mon, 30 Oct 2017 22:06:00 GMT

    [ https://issues.apache.org/jira/browse/IMAGING-205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16225827#comment-16225827
] 

Joakim Knudsen commented on IMAGING-205:
----------------------------------------

Also, see the [following discussion|http://u88.n24.queensu.ca/exiftool/forum/index.php/topic,8642.msg44434.html#msg44434],
from the ExifTool forum.

> 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
>            Priority: Critical
>         Attachments: 20171030_21481_COPY.jpg
>
>
> 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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