drewnoakes/metadata-extractor

Samsung SubIFD User Comment contains non-printable characters

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#105 opened on Apr 26, 2015

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 (13 comments) (0 reactions) (0 assignees)Java (2,411 stars) (470 forks)batch import
format-exifhelp wanted

Description

Issue:

  1. Getting weird printout on User comment field Version: metadata-extractor-2.8.1.jar and xmpcore-5.1.2.jar Target Device: Samsung Note 3 Running Android 5.0 I have kept sample data on Dropbox, so I do not mess with images while transferring: Dropbox images and output: https://www.dropbox.com/sh/j27tre1cdarwms1/AADP37j9fT3FYQRRHH4NyLJPa?dl=0
  2. Not sure if it is part of this, but I do not see "Device Make" and "Device Model" shown in output by library.

Contributor guide

Tech stack
java
Domain
data
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
JavaExif metadata formatmetadata extractor library internals
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Investigate the SubIFD User Comment field in Samsung images. Look at the metadata extractor source code for reading User Comment (likely in ExifIFD0Descriptor or similar). The issue involves non printable characters in the User Comment (tag 0x9286). Check how the library decodes this field and whether it filters non printable characters. Also verify if 'Device Make' and 'Device Model' are missing due to a different tag or parsing issue. Examine sample images from the Dropbox link to replicate the problem. Consider checking for existing PRs or discussions that may have addressed this.