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)

Engineering Prompt:

**Role:** Python Tool Developer
**Task:** Create a "Video Frame Extractor".

**Requirements:**
1.  **GUI:**
    *   Select video.
    *   Mode: Interval (every N seconds) vs Timestamps (list).
    *   Format dropdown (PNG, JPG).
    *   Quality slider (for JPG).
    *   Preview extracted frames.
    *   Progress bar.

2.  **Logic:**
    *   Use FFmpeg fps filter for interval mode.
    *   Use -ss for timestamp mode (fast seeking).
    *   Name frames sequentially.

3.  **Deliverables:**
    *   `extract_frames.py`
    *   `run.bat`, `run.sh`
    *   `requirements.txt`

🧠 Prompt Decoding

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

🛠️ Instructions

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