⏱ EXIF Date Changer

A desktop GUI app to bulk-edit the Date Taken metadata on your photos and videos — in seconds.

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✨ Features

• Multi-format support — JPEG, TIFF, CR2 (Canon RAW), MP4, and MOV
• Bulk editing — add an entire folder and apply dates to all files at once
• Sort & increment — files are sorted by filename (A→Z) and each gets a +1 second offset, so they maintain a natural order without sharing the same timestamp
• Live status indicators — colour-coded dots show success ✔ or failure ✗ per file as they are processed
• Format badges — each file row shows its format type (JPG, CR2, MP4, etc.) highlighted in colour
• Quick-set presets — "Now" and "Today midnight" buttons to fill the date picker instantly
• Selective processing — check/uncheck individual files or use Select All / None
• Non-destructive — only the metadata is modified; pixel data and video content are untouched

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📸 Supported Formats

Format	Extension	Method
JPEG	.jpg .jpeg	EXIF (DateTimeOriginal, DateTimeDigitized, DateTime)
TIFF	.tif .tiff	EXIF
Canon RAW	.cr2	EXIF (TIFF-based)
MP4	.mp4	©day tag + mvhd atom patch
QuickTime	.mov	©day tag + mvhd atom patch

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🚀 Getting Started

Prerequisites

• Python 3.10 or higher

Installation

# 1. Clone the repository
git clone https://github.com/your-username/exif-date-changer.git
cd exif-date-changer

# 2. Install dependencies
pip install -r requirements.txt

# 3. Run the app
python exif_date_changer.py

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🖥️ Building a Standalone Executable (Windows)

You can package the app into a single .exe using PyInstaller — no Python installation required on the target machine.

pip install pyinstaller
pyinstaller --onefile --windowed --name "EXIF Date Changer" exif_date_changer.py

The finished executable will be at:

dist/EXIF Date Changer.exe

Note: Windows Defender may flag PyInstaller-built executables as a false positive. Right-click → Properties → Unblock, or add the dist/ folder to your antivirus exclusions.

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🧭 How to Use

1. Add files — click ＋ Add Files to pick individual files, or 📁 Add Folder to import all supported files in a directory
2. Set the date and time — use the date/time fields or hit Now / Today midnight for quick presets
3. Sort & increment (optional) — when checked, files are sorted alphabetically and each receives a timestamp 1 second later than the previous one, preserving order
4. Apply — click Apply Date → and watch the progress bar; each row turns green on success or red on failure

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📦 Dependencies

Package	Purpose
customtkinter	Modern dark-themed GUI
Pillow	Image handling
piexif	Read/write EXIF metadata for JPEG, TIFF, CR2
mutagen	Read/write metadata tags for MP4 and MOV