{
  "id": 5077710,
  "title": "How I Built a Desktop Movie Streamer with Electron and WebTorrent",
  "url": "https://urgent.news/2026/09/02/how-i-built-a-desktop-movie-streamer-with-electron-and-webtorrent",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-02T11:39:19.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/qazi_absaar_404e7c8bb9076/how-i-built-a-desktop-movie-streamer-with-electron-and-webtorrent-ag4"
  },
  "original_language": "en",
  "account": "CinePeer is a desktop streaming app that functions like Prime Video, allowing users to browse with TMDB metadata and click play to start the video while it's downloading. The challenging part was making the video play a file that doesn't exist yet. HTML5 video elements require an HTTP URL, and range requests are necessary to fetch specific bytes. Torrented videos don't have data on disk, so WebTorrent provides a File object with a createReadStream() method that allows bridging HTTP range requests to the stream. Each torrent gets its own tiny local HTTP server that answers range requests against the file. The Electron main process creates an HTTP server, picks the largest file in the torrent, and hands the URL to the renderer. The renderer never knows a torrent exists. The main process runs separately from the renderer because browsers can't run standard torrent clients. The renderer asks the main process to add a torrent over IPC and receives a stream URL to point the player at. Progress updates, download speed, and peer information come back over the same IPC channel. Lazy dynamic importing of WebTorrent is necessary because Electron uses CommonJS by default and WebTorrent is shipped as pure ESM.",
  "summary": "I built CinePeer , a desktop streaming app: a Prime Video-style interface where you browse with TMDB metadata, click play, and the video starts while the torrent is still downloading . The UI took a weekend. The part that took actual thinking was this: How do you make <video> play a file that doesn't exist yet? The problem An HTML5 video element needs an HTTP URL. It seeks by sending Range…",
  "key_points": [
    "CinePeer is a desktop streaming app like Prime Video",
    "WebTorrent creates File object for torrented videos",
    "Electron main process handles HTTP server for range requests"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}