This is how I added an in-browser auto captions feature to my YouTube Shorts converter web application using Whisper AI and ffmpeg.wasm
A few weeks ago I launched Convert to Shorts — a free browser-based tool that converts horizontal videos to YouTube Shorts format (9:16) without uploading anything to a server. I wrote about the ffmpeg.wasm + Vite setup in a previous article. The most requested feature after launch was auto captions. Captions significantly boost Shorts engagement since most people watch without sound, and…
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