drewnoakes/metadata-extractor

HEIF image width & image height not correct?

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#569 opened on Feb 22, 2022

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format-heifhelp wantedimage-queue

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Description

Hi Drew, I noticed that the HEIF Directory always returns the following:

HEIF - Width - 512 pixels HEIF - Height - 512 pixels

While the actual the EXIF directory returns the proper sizes: Exif SubIFD - Exif Image Width - 4032 pixels Exif SubIFD - Exif Image Height - 3024 pixels

perhaps it is grabbing these, or is something else happening?: Exif IFD0 - Tile Width - 512 Exif IFD0 - Tile Length - 512

Attached a sample HEIC

citron.HEIC.zip

Contributor guide

Research direction
Trace the HEIF image width/height extraction logic in the codebase to identify why it returns 512 instead of the EXIF reported values. Ensure that the correct tags are used for dimensions.
Tech stack
java
Domain
api
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
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Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Java
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70