Developer Builds Browser-Based Tool That Extracts Slides From Video Locally

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A developer has created Video2Any, a browser-based tool that converts lecture recordings, webinars, and screen recordings into PowerPoint decks, PDFs, image frames, and subtitles. The tool processes video entirely on the user's device, requiring no file upload to a server. It works by sampling frames every few seconds, downscaling them to a low resolution, and using a block-based visual difference algorithm to detect when a new slide appears on screen. This approach avoids the noise of pixel-level comparison, making detection more reliable despite video compression artifacts like cursor movement or webcam overlays. According to the developer, an hour-long lecture video can typically be processed in under a minute on a standard laptop.

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