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https://issues.apache.org/jira/browse/IMAGING-221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16839208#comment-16839208
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Bruno P. Kinoshita commented on IMAGING-221:
--------------------------------------------
[~joakimk], attached file "mine.JPG". And below is the output of running the
code that sets GPS coords:
{noformat}
file: /home/kinow/Downloads/mine.JPG
XResolution: 72
DateTime: '2019:03:10 23:29:59'
DateTimeOriginal: '2019:03:10 23:29:59'
DateTimeDigitized: '2019:03:10 23:29:59'
PhotographicSensitivity: 125
ShutterSpeedValue: 5
ApertureValue: Not Found.
BrightnessValue: Not Found.
GPSLatitudeRef: Not Found.
GPSLatitude: Not Found.
GPSLongitudeRef: Not Found.
GPSLongitude: Not Found.
item: ImageDescription: 'This is a test comment!'
item: Make: 'Sony'
item: Model: 'E5823'
item: Orientation: 1
item: XResolution: 72
item: YResolution: 72
item: ResolutionUnit: 2
item: Software: '32.4.A.1.54_0_f500'
item: DateTime: '2019:03:10 23:29:59'
item: YCbCrPositioning: 1
item: ExifOffset: 8
item: GPSInfo: 27680
item: ExposureTime: 10/320 (0.031)
item: FNumber: 2
item: PhotographicSensitivity: 125
item: ExifVersion: 48, 50, 50, 48
item: DateTimeOriginal: '2019:03:10 23:29:59'
item: DateTimeDigitized: '2019:03:10 23:29:59'
item: ComponentsConfiguration: 1, 2, 3, 0
item: ShutterSpeedValue: 5
item: ExposureCompensation: 0
item: MeteringMode: 5
item: LightSource: 0
item: Flash: 16
item: FocalLength: 423/100 (4.23)
item: MakerNote: 83, 79, 78, 89, 32, 77, 79, 66, 73, 76, 69, 0, 9, 0, 15,
32, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, 36, 32, 7, 0, 96, 0, 0, 0, -6, 2, 0, 0, 37,
32, 1, 0, 4, 0, 0, 0, 5, 0, 0, 0, 0... (20292)
item: UserComment: '?This is a test comment!'
item: SubSecTime: '737529'
item: SubSecTimeOriginal: '737529'
item: SubSecTimeDigitized: '737529'
item: FlashpixVersion: 48, 49, 48, 48
item: ColorSpace: 1
item: ExifImageWidth: 3840
item: ExifImageLength: 2160
item: InteropOffset: 602
item: CustomRendered: 0
item: ExposureMode: 0
item: WhiteBalance: 0
item: DigitalZoomRatio: 1
item: SceneCaptureType: 0
item: SubjectDistanceRange: 0
item: InteroperabilityIndex: 'R98'
item: InteroperabilityVersion: 48, 49, 48, 48
item: Compression: 6
item: Orientation: 1
item: XResolution: 72
item: YResolution: 72
item: ResolutionUnit: 2
item: JpgFromRawStart: 20928
item: JpgFromRawLength: 6487
item: Caption/Abstract: This is a test comment!
{noformat}
> updateExifMetadataLossless restructures meta data (and problems with Maker
> Notes)
> ---------------------------------------------------------------------------------
>
> Key: IMAGING-221
> URL: https://issues.apache.org/jira/browse/IMAGING-221
> Project: Commons Imaging
> Issue Type: Bug
> Reporter: Joakim Knudsen
> Assignee: Bruno P. Kinoshita
> Priority: Major
> Fix For: 1.0-alpha2
>
> Attachments: mine.JPG, mine.JPG.html, original.JPG, original.html,
> test.JPG, test.html
>
>
> ExifRewriter's *updateExifMetadataLossless* method causes the meta data of
> the JPEG to be completely reordered after writing. This, in itself, might not
> be a big concern, but it's a bit unexpected when the method is named
> "lossless". More worryingly, I also find problems are introduced wrt. the
> Maker Notes tag (odd offset).
> I've produced an example of the problem in the attached JPEG file, using
> ExifTool to validate/analyze the images before and after. The image is taken
> by a Sony Xperia Z5 phone, and the "original.JPG" validates OK. After
> modifying the contents of the UserComments tag (value: "Test") the modified
> image produces a warning:
> Verifying the attached photo using ExifTool gives the following output:
> $ ./exiftool\(-k\).exe -validate -warning -a ../test.JPG
> -- press RETURN --
>
> Validate : 1 Warning (all minor)
> Warning : [minor] Possibly incorrect maker notes
> offsets (fix by -628?)
>
> Using ExifTool's -htmldump option, it is easy to see how the meta data has
> been affected.
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