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https://issues.apache.org/jira/browse/IMAGING-319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17836846#comment-17836846
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Bruno P. Kinoshita commented on IMAGING-319:
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Hmmm, even though the Thumbnail Offset is different, the Offset time seems to
be correct in both cases
{noformat}
kinow@ranma:~/Desktop$ exiftool iPhone12-geotag.JPG | grep "Offset Time"
Offset Time : -05:00
Offset Time Original : -05:00
Offset Time Digitized : -05:00 {noformat}
{noformat}
kinow@ranma:~/Desktop$ exiftool editted-iPhone12-geotag.JPG | grep "Offset Time"
Offset Time : -05:00
Offset Time Original : -05:00
Offset Time Digitized : -05:00
{noformat}
I will try to reproduce the "-05:00" -> "05:00" as reported by the user using
the alpha tags.
> updateExifMetadataLossless lost the first character of a String
> ---------------------------------------------------------------
>
> Key: IMAGING-319
> URL: https://issues.apache.org/jira/browse/IMAGING-319
> Project: Commons Imaging
> Issue Type: Bug
> Components: Format: JPEG
> Affects Versions: 1.0-alpha2
> Reporter: Sicheng Yang
> Assignee: Bruno P. Kinoshita
> Priority: Major
> Attachments: Screen Shot 2021-11-26 at 4.01.06 PM-1.png, Screen Shot
> 2021-11-26 at 4.01.21 PM-1.png, iPhone12-geotag.JPG
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> I try to use TiffOutputSet to generate a new image. However, if a tag that
> contains String, the program may miss the first character of the String.
> {noformat}
> package org.apache.commons.imaging;
> import org.apache.commons.imaging.common.ImageMetadata;
> import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata;
> import org.apache.commons.imaging.formats.jpeg.exif.ExifRewriter;
> import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
> import org.apache.commons.imaging.formats.tiff.write.TiffOutputSet;
> import java.io.BufferedOutputStream;
> import java.io.File;
> import java.io.FileOutputStream;
> import java.io.IOException;
> public class LibraryTest {
> public static void main(String[] args) throws ImagingException,
> IOException {
> File source = new File("/home/kinow/Desktop/iPhone12-geotag.JPG");
> File result = new
> File("/home/kinow/Desktop/editted-iPhone12-geotag.JPG");
> final ImageMetadata metadata = Imaging.getMetadata(source);
> final JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
> final TiffImageMetadata exif = jpegMetadata.getExif();
> TiffOutputSet outputSet = exif.getOutputSet();
> BufferedOutputStream bufferedOutputStream = new
> BufferedOutputStream(new FileOutputStream(result));
> new ExifRewriter().updateExifMetadataLossless(source,
> bufferedOutputStream, outputSet);
> }
> }{noformat}
> This is the sample code.
> Tag value in original image
> !image-2021-11-26-16-01-58-645.png!
> Tag value in output image
> !image-2021-11-26-16-04-12-185.png!
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