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Bug #703

exiv2 fails to extract preview from Olympus E-500 raw files

Added by Michal Čihař about 9 years ago. Updated about 3 years ago.

Status:
New
Priority:
Normal
Assignee:
Category:
metadata
Target version:
Start date:
06 May 2010
Due date:
% Done:

0%

Estimated time:

Description

Two sample files:
http://mitago.net/tmp/Olympus_E500.orf
http://mitago.net/tmp/Olympus_E510.orf

On E500 exiv2 fails to extract big preview:

$exiv2 -pp Olympus_E500.orf
Olympus_E500.orf      Preview 1: image/jpeg, 160x120 pixels, 10167 bytes
Olympus_E500.orf      Preview 2: image/jpeg, 160x120 pixels, 10167 bytes 
                                             ^^^^
                                             No big preview

While it works on 510 files:

$exiv2 -pp Olympus_E510.orf
Olympus_E510.orf      Preview 1: image/jpeg, 160x120 pixels, 8295 bytes
Olympus_E510.orf      Preview 2: image/jpeg, 1600x1200 pixels, 394571 bytes


If I try with exiftool, it shows the correct ones
$ exiftool Olympus_E500.orf | grep Preview
Preview Image Valid             : Yes
Preview Image Start             : 24576
Preview Image Length            : 417457
Preview Image                   : (Binary data 417457 bytes, use -b option to extract)
$ exiftool Olympus_E510.orf | grep Preview
Preview Image Valid             : Yes
Preview Image Start             : 24576
Preview Image Length            : 394571
Preview Image                   : (Binary data 394571 bytes, use -b option to extract)


Related issues

Related to Exiv2 - Feature #766: exiv2 seem to decode less metadata from Olympus images than possibleClosed09 Mar 2011

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History

#2

Updated by Alan Pater about 4 years ago

Confirmed. I extracted the preview images using exiv2 -ep. They are both the same small size for the E500.

-rw-rw-r-- 1     10167 Apr  6 17:17 Olympus_E500-preview1.jpg
-rw-rw-r-- 1     10167 Apr  6 17:17 Olympus_E500-preview2.jpg

-rw-rw-r-- 1      8295 Apr  6 17:20 Olympus_E510-preview1.jpg
-rw-rw-r-- 1    394571 Apr  6 17:20 Olympus_E510-preview2.jpg

exiftool does extract the large preview image

exiftool -b -PreviewImage -w _preview.jpg Olympus_E500.orf

-rw-rw-r--  1    417457 Apr  6 17:24 Olympus_E500_preview.jpg
#3

Updated by Robin Mills over 3 years ago

  • Target version set to 53
#4

Updated by Robin Mills about 3 years ago

  • Category set to metadata
  • Status changed from New to Assigned
  • Assignee set to Robin Mills

This issue has been in the database for 6 years and nobody else has requested progress with this matter. So, unless you engage to persuade me to keep this matter alive, it will be closed on April 30 as "no longer needed/wanted".

#5

Updated by Michal Čihař about 3 years ago

The bug is still valid with exiv2 0.25...

#6

Updated by Robin Mills about 3 years ago

  • Status changed from Assigned to New
  • Target version changed from 53 to 1.0

I'll move it to Target 1.0 and it'll be considered for v0.27. I'm closing on code-complete for v0.26 and this will not be in v0.26. I haven't started to schedule v0.27 yet.

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