RepoRadar: Browser Streaming Video Downloader

A browser extension plus local service to download streaming videos from web pages to your disk

Problem

A user wanted to download streaming videos while browsing sites like Bilibili, Douyin or X on a desktop browser, found no good solution and built one with a browser extension plus a local executable. The extension sends the stream URL to a local server that downloads and saves the file. This shows a real but underserved scenario: saving web streaming video locally, where existing tools either support only one site or require complex CLI work.

Solution

A browser extension plus a lightweight local service. The extension sniffs streaming requests in the page and sends URLs to the local service, which downloads and saves to a user-specified directory. Supports major video sites, with a simple download queue and naming rules. No cloud, no uploads—just local capture and save.

Users

Regular users who want to save web videos, content researchers, creators needing offline archives

MVP

Chrome/Edge extension that sniffs streaming requests; lightweight local service that receives URLs and downloads; support for Bilibili, Douyin, X and other major sites; simple download queue and file naming; fully local storage

Revenue

Free basic tier plus paid premium (batch download, ad-free, priority new-site support); one-time purchase or annual subscription

Why now

Streaming sites increasingly use segmented and encrypted protocols that traditional downloaders struggle with. AI-assisted local development lets small teams adapt to new sites quickly, so an indie builder can build a moat through fast iteration