Extract Frames

😫 The Pain Point

You need thumbnails from a video every 30 seconds, or you want to grab specific frames for a storyboard. Pausing and screenshotting is imprecise.

🚀 Agentic Solution

A Frame Extractor that captures images at exact intervals or timestamps.

Key Features:

• Interval Mode: One frame every N seconds.
• Timestamp Mode: Specific frames at given times.
• Quality Control: PNG or JPG with adjustable quality.

⚔️ Phase 1: Commander (Quick Fix)

For quick extraction.

Prompt:

“I have a video tutorial.mp4. Write a Python script using FFmpeg to:

1. Extract: One frame every 30 seconds.
2. Format: PNG for quality.
3. Output: Save as frames/frame_001.png, frame_002.png, etc.

Print progress. Alternative: Extract at specific timestamps (0:30, 1:45, 5:00).”

Result: Perfect stills from your video.

🏗️ Phase 2: Architect (Permanent Tool)

For Video Editors.

Engineering Prompt:

**Role:** Python GUI Developer (PyQt6 Specialist)
**Task:** Create "Frame Extractor Pro" Desktop App

**Objective:** A precision tool to extract high-quality stills from videos at specific intervals.

**Tech Stack:**
* Language: Python 3.10+
* GUI Library: PyQt6 (Cross-platform)
* Processing: FFmpeg
* Packaging: PyInstaller

**Functional Requirements:**
1.  **UI Layout (PyQt6):**
    *   **Video:** Select Video File.
    *   **Mode Tabs:** "Every N Seconds" vs "Timestamp List" vs "Total Count".
    *   **Settings:** Output Format (PNG/JPG), Quality Slider.
    *   **Preview:** Show the first frame of the video.

2.  **Core Logic:**
    *   **Interval:** Use FFmpeg `fps` filter.
    *   **Timestamps:** Batch seeking with `-ss` for fast extraction.
    *   **Threading:** Process extraction in background thread.

3.  **Deliverables:**
    *   `main.py`: Complete source code.
    *   `requirements.txt`: Dependencies.
    *   **Build Instructions:**
        *   Windows: `pyinstaller --onefile --noconsole main.py`
        *   macOS: `pyinstaller --windowed --noconsole main.py`

🧠 Prompt Decoding

• fps filter: fps=1/30 means 1 frame every 30 seconds.

🛠️ Instructions

1. Install FFmpeg.
2. Copy Prompt → Specify interval → Run.