TL;DR — I built Captionly, a subtitle generator that runs Whisper inside the browser...
Captionly runs Whisper in-browser via WebGPU/WASM to generate subtitles with zero server upload, no cost, privacy-first. The architecture signals browser maturity (WebGPU, WebCodecs, Transformers.js) now enabling local video processing—a shift that redefines video SaaS moat from infrastructure-cost to UX, destined to reshape the category.
TL;DR — I built Captionly, a
subtitle generator that runs Whisper inside the browser using
@huggingface/transformers (WebGPU when available, WASM as fallback).
Files never leave the device. Here's how the pieces fit together and
the gotchas that took me longest to figure out.
I’ve been looking for a simple way to add captions to short videos without uploading them anywhere....
Full pipeline: Gemma 4 31B expands a one-liner into a 10-beat script, HiDream generates images, LTX-2 I2V renders clips, and…
Every creator hits the same wall: you finished the video, exported the MP4, uploaded to YouTube — and...
A few weeks ago I launched ClipGG — a collection of 12 free browser-based tools for content...
Every "AI YouTube" tutorial ends the same way: sign up for ChatGPT Plus, then ElevenLabs, then...
Six months ago I started Keyvello (keyvello.com) — an AI video generator that turns a prompt into a...
