SUMMARY I noticed that in some random pictures I took last week, digikam was not able to read the metadata. Information such as the date and the picture orientation was not read from the picture metadata. When looking at the metadata panels, I see that all the metadata is seen in the XMP section instead of the EXIF (which appears as blank), but when inspecting the metadata using another tool (e.g. Jeffrey's Image metadata viewer http://exif.regex.info/) I can see that there is indeed EXIF info in the picture. Strangely enough, other pictures from the same batch had their metadata read correctly. I have attached one of the affected pictures as a reference. It has not been edited in any way, just straight out of the camera. Also a capture of the EXIF data in the mentioned website, and a couple captures of the metadata section in Digikam. However, I tried with Digikam 7.3 (stable, appimage) and all the metadata was read correctly, so this problem seems to be specific to v7.4 STEPS TO REPRODUCE 1. Transfer pictures from camera to folder in PC. 2. Start digikam and wait until finishes exploring new elements. OBSERVED RESULT Notice how some elements do not include the date or the picture orientation. EXPECTED RESULT Exif metadata should be read correctly. SOFTWARE/OS VERSIONS Digikam 7.4.0 Build date: 2/12/21 10:27 (target: Debug) Rev.: 7ac1b183b14ecd37e72f181e1702ddee1b2a22b7 Ubuntu 20.04.3 LTS
Created attachment 144161 [details] Digikam's Metadata panel (EXIF) for affected picture.
Created attachment 144162 [details] Digikam's Metadata panel (XMP) for affected picture.
I could not upload an affected picture due to the file size. Here's a link to the affected picture (compressed in ZIP to preserve format): https://easyupload.io/efm7gq
Outcome of Jeffrey Friedl's Image Metadata Viewer for the affected picture. (Link expires in 30 days): https://easyupload.io/a9oqqn
Hi, I tried under Mac and digiKam 7.4.0, compiled with Exiv2 0.27.5 and XMP support. The problem is clear on the command line traces. It come from Exiv2 shared library : digikam.metaengine: Cannot load metadata from file with Exiv2 backend: /System/Volumes/Data/Users/gilles/Pictures/DSC06971.JPG (Error # 59 : "corrupted image metadata". So, i recommend to tried to read metadata ith Exiv2 CLI tool with this image. Typically, it must report the same problem. If yes, make a new bug entry in Exiv2 project from github with a link to the image for future investigations by Exiv2 team. Best Gilles Caulier
In my setup, I have exiv2 0.27.2. It seems to read the metadata correctly: (base) marc@marc-TM1703:~$ exiv2 --version exiv2 0.27.2 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA (base) marc@marc-TM1703:~$ exiv2 -p a DSC07110.JPG Exif.Image.ImageDescription Ascii 32 Exif.Image.Make Ascii 5 SONY Exif.Image.Model Ascii 10 ILCE-5000 Exif.Image.Orientation Short 1 left, bottom Exif.Image.XResolution Rational 1 350 Exif.Image.YResolution Rational 1 350 Exif.Image.ResolutionUnit Short 1 inch Exif.Image.Software Ascii 16 ILCE-5000 v1.10 Exif.Image.DateTime Ascii 20 2021:11:27 12:51:55 Exif.Image.YCbCrPositioning Short 1 Co-sited Exif.Image.ExifTag Long 1 364 Exif.Photo.ExposureTime Rational 1 1/80 s Exif.Photo.FNumber Rational 1 F11 Exif.Photo.ExposureProgram Short 1 Auto Exif.Photo.ISOSpeedRatings Short 1 100 Exif.Photo.SensitivityType Short 1 2 Exif.Photo.RecommendedExposureIndex Long 1 100 Exif.Photo.ExifVersion Undefined 4 2.30 Exif.Photo.DateTimeOriginal Ascii 20 2021:11:27 12:51:55 Exif.Photo.DateTimeDigitized Ascii 20 2021:11:27 12:51:55 Exif.Photo.ComponentsConfiguration Undefined 4 YCbCr Exif.Photo.CompressedBitsPerPixel Rational 1 3 Exif.Photo.BrightnessValue SRational 1 8.91172 Exif.Photo.ExposureBiasValue SRational 1 0 EV Exif.Photo.MaxApertureValue Rational 1 F3.5 Exif.Photo.MeteringMode Short 1 Multi-segment Exif.Photo.LightSource Short 1 Unknown Exif.Photo.Flash Short 1 No, compulsory Exif.Photo.FocalLength Rational 1 16.0 mm Exif.Photo.MakerNote Undefined 37103 (Binary value suppressed) Exif.MakerNote.Offset Long 1 922 Exif.MakerNote.ByteOrder Ascii 3 II Exif.Sony1.Panorama Long 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Exif.Sony1.PreviewImage Undefined 1077203 (Binary value suppressed) Exif.Sony1.Contrast SLong 1 0 Exif.Sony1.Saturation SLong 1 0 Exif.Sony1.AutoHDR Long 1 Off Exif.Sony1.ShotInfo Undefined 390 (Binary value suppressed) Exif.Sony1.ColorReproduction Ascii 16 Standard Exif.Sony1.ColorTemperature Long 1 0 Exif.Sony1.ColorCompensationFilter Long 1 0 Exif.Sony1.SceneMode Long 1 Auto Exif.Sony1.ZoneMatching Long 1 ISO Setting Used Exif.Sony1.DynamicRangeOptimizer Long 1 Auto Exif.Sony1.ImageStabilization Long 1 On Exif.Sony1.ColorMode Long 1 Standard Exif.Sony1.FullImageSize Long 2 3632 x 5456 Exif.Sony1.PreviewImageSize Long 2 1080 x 1616 Exif.Sony1.FileFormat Byte 4 ARW 2.3.1 Exif.Sony1.Quality Long 1 Fine Exif.Sony1.FlashExposureComp SRational 1 0 EV Exif.Sony1.WhiteBalanceFineTune Long 1 0 Exif.Sony1.WhiteBalance Long 1 Auto Exif.Sony1.SonyModelID Short 1 ILCE-5000 Exif.Sony1.Teleconverter Long 1 None Exif.Sony1.LensID Long 1 Manual lens Exif.Sony1.ExposureMode Short 1 Program Exif.Sony1.JPEGQuality Short 1 n/a Exif.Sony1.FlashLevel SShort 1 Normal Exif.Sony1.ReleaseMode Short 1 Normal Exif.Sony1.SequenceNumber Short 1 Single Exif.Sony1.AntiBlur Short 1 On (Shooting) Exif.Sony1.DynamicRangeOptimizer Short 1 Standard Exif.Sony1.IntelligentAuto Short 1 On Exif.Sony1.WhiteBalance2 Short 1 Auto Exif.Photo.UserComment Undefined 64 Exif.Photo.FlashpixVersion Undefined 4 1.00 Exif.Photo.ColorSpace Short 1 sRGB Exif.Photo.PixelXDimension Long 1 5456 Exif.Photo.PixelYDimension Long 1 3632 Exif.Photo.InteroperabilityTag Long 1 38156 Exif.Iop.InteroperabilityIndex Ascii 4 R98 Exif.Iop.InteroperabilityVersion Undefined 4 1.00 Exif.Photo.FileSource Undefined 1 Digital still camera Exif.Photo.SceneType Undefined 1 Directly photographed Exif.Photo.CustomRendered Short 1 Normal process Exif.Photo.ExposureMode Short 1 Auto Exif.Photo.WhiteBalance Short 1 Auto Exif.Photo.DigitalZoomRatio Rational 1 1.0 Exif.Photo.FocalLengthIn35mmFilm Short 1 24.0 mm Exif.Photo.SceneCaptureType Short 1 Standard Exif.Photo.Contrast Short 1 Normal Exif.Photo.Saturation Short 1 Normal Exif.Photo.Sharpness Short 1 Normal Exif.Photo.LensSpecification Rational 4 160/10 500/10 35/10 56/10 Exif.Photo.LensModel Ascii 26 E PZ 16-50mm F3.5-5.6 OSS Exif.Image.PrintImageMatching Undefined 106 80 114 105 110 116 73 77 0 48 51 48 48 0 0 3 0 2 0 1 0 0 0 3 0 34 0 0 0 1 1 0 0 0 0 9 17 0 0 16 39 0 0 11 15 0 0 16 39 0 0 151 5 0 0 16 39 0 0 176 8 0 0 16 39 0 0 1 28 0 0 16 39 0 0 94 2 0 0 16 39 0 0 139 0 0 0 16 39 0 0 203 3 0 0 16 39 0 0 229 27 0 0 16 39 0 0 Exif.Thumbnail.Compression Short 1 JPEG (old-style) Exif.Thumbnail.ImageDescription Ascii 32 Exif.Thumbnail.Make Ascii 5 SONY Exif.Thumbnail.Model Ascii 10 ILCE-5000 Exif.Thumbnail.Orientation Short 1 left, bottom Exif.Thumbnail.XResolution Rational 1 72 Exif.Thumbnail.YResolution Rational 1 72 Exif.Thumbnail.ResolutionUnit Short 1 inch Exif.Thumbnail.Software Ascii 16 ILCE-5000 v1.10 Exif.Thumbnail.DateTime Ascii 20 2021:11:27 12:51:55 Exif.Thumbnail.JPEGInterchangeFormat Long 1 38448 Exif.Thumbnail.JPEGInterchangeFormatLength Long 1 11084 Exif.Thumbnail.YCbCrPositioning Short 1 Co-sited (base) marc@marc-TM1703:~$ I will try to compile 0.27.5 and report back.
You are right, it fails in exiv 0.27.5: (base) marc@marc-TM1703:~/Baixades/exiv2-0.27.5-Linux64$ bin/exiv2 -p a ~/DSC07110.JPG Exiv2 exception in print action for file /home/marc/DSC07110.JPG: corrupted image metadata I have checked exiv2's project on github, and it's probably related to this bug: https://github.com/Exiv2/exiv2/issues/2001
That bug has already been fixed. I tried the last nightly release and I can confirm that exiv2 once again can read the metadata for these pictures taken with a Sony camera. I don't know when a stable build will be published.
Hi Marc, 2 possibilities : - code from digiKam core fixed recently. - code from Exiv2 fixed recently. Both in AppImage bundle use a rolling release code (digiKam from git/master, and Exiv2 from 0.27-maintenance branch). Best Gilles Caulier
Oh, ok, I didn't know digikam used rolling release code from exiv2. I have only tried it directly on exiv2, but in that case I guess that it also has been fixed in Digikam.