Video Scene Extractor
Powered by FFmpeg WebAssembly — Extract keyframes for AI video stylization
Upload video → auto-detect scene changes → extract keyframes → download as ZIP
Supports MP4 / MOV, 100% browser-local processing
Initializing FFmpeg engine...
Why Extract Scene Frames?
- AI Video Stylization — extract first/last frames as ControlNet references for temporal consistency.
- Scene Analysis — auto-detect shot boundaries without manual frame-by-frame scrubbing.
- Absolute Privacy — video processed entirely in your browser, never uploaded to any server.
How It Works
Powered by FFmpeg.wasm — a full FFmpeg engine compiled to WebAssembly running in your browser. Uses FFmpeg's built-in scene filter to detect shot boundaries and extract the first frame of each new scene. Extracted frames are packaged into a ZIP for download. Initial load requires downloading ~31MB WebAssembly core files.
Video Scene Extractor FAQ
Q1: Why is all processing done locally on my device?
Powered by modern WebAssembly technology, the FFmpeg core decoder is loaded directly into your browser sandbox. All frame analysis, scene detection, and keyframe extraction runs on your local machine — zero data is sent to any server, and your video files never leave your device.
Q2: How does the automatic scene detection work?
The tool leverages FFmpeg's built-in scene detection filter. It analyzes color histogram differences and motion vector changes between consecutive frames to automatically identify physical hard cuts (Scene Cuts). This eliminates the tedious manual frame-by-frame scrubbing. Use the sensitivity slider to fine-tune the detection threshold for different video types.
Q3: What is the quality of the extracted keyframes?
This tool performs lossless frame extraction. FFmpeg extracts video frames at full native resolution in PNG format, perfectly preserving high dynamic range and image detail. The output is ideal for AI painting ControlNet reference images, storyboard production, or commercial stock image tagging.