05 / Install

Get started in 2 minutes

System requirements

  • Google Chrome 116+ (or Chromium browsers: Edge, Brave, Vivaldi)
  • Desktop only — Windows, macOS or Linux
  • Extensions are not supported on mobile devices
Main path

Installation

Chrome + OpenRouter API key

  1. Install the extension Install from Chrome Web Store — one click, auto-updates.
  2. Paste API key Sign up at openrouter.ai, create an API key and paste it in extension settings (click the icon → Settings). Choose a model.
  3. Watch with subtitles Open a video with subtitles — the extension translates automatically. Key b — dual subtitles, [ ] — timing adjustment.

For developers: source code on <a href="https://github.com/aveleazer/podstr" target="_blank" rel="noopener">GitHub</a>.

Where to watch

The extension intercepts subtitles from the HLS stream and YouTube. Tested on these services:

YouTube Interviews, shows, lectures — any video with manual subtitles (CC) Plex Your own media server or free ad-supported catalog with English subtitles ARTE European cinema and documentaries, subtitles in multiple languages Filmzie Free indie and classic films with English subtitles BBC iPlayer BBC series and documentaries with subtitles Netflix Support in development

Extension permissions

Access to all sites
Subtitles are loaded from video service CDNs — their URLs are unpredictable. Needed to download .vtt files.
Storage
Translation cache, settings, API key. Everything is stored locally, not synced.
Web requests (webRequest)
Intercepting subtitle URLs from the HLS stream. The extension doesn't modify requests, only observes.

Troubleshooting

“Developer mode” won't turn on
Make sure you have sufficient permissions. In corporate networks, developer mode may be blocked by the administrator.
Extension won't load
Check that you selected the folder containing manifest.json, not the parent folder or the .zip archive.
Subtitle panel doesn't appear
Reload the video page. The extension needs to be loaded before playback starts to intercept subtitle URLs.

Install the extension and watch with AI subtitles in any language

How it works FAQ