Video Sniffer — Free Batch Video Downloader

Saves streaming video (HLS/DASH) as MP4, remuxed entirely in your browser. No companion app, no limits. Does not support YouTube.

Video Sniffer finds the video a page is streaming — even when the site serves it as an HLS (.m3u8) or DASH (.mpd) stream with no file to right-click — and saves it to your computer as a real video file. HOW IT WORKS Modern players fetch video in small segments and assemble them in memory, which is why "Save video as…" is missing. Video Sniffer watches that traffic, collects the segments, and rebuilds the file. Every stream it finds is listed with its resolution, codec, size and a moving preview, so you know what you are saving before you save it. WHAT YOU GET • One-click download of HLS and DASH streams as MP4 — a remux, so the original bytes are kept and there is no quality loss and no re-encode wait • Compatible MP4: re-encodes unusual codecs (10-bit, HEVC, MPEG-2) into something older players and TVs will actually open • Audio-only downloads (m4a or mp3) • Subtitles: tracks the page offers are downloaded alongside the video, from the same menu — not as a separate mystery item • Live streams are handled as live: sampled from the current window, with no fictional duration • Batch: save what you find, tick a group, queue it, and watch the segments land • Per-quality selection, or set a preferred quality once and forget it • Cancel a running download cleanly; re-download anything from Saved • MKV container option, filenames from the page title, completion notifications • Side panel or popup, dark and light themes EVERYTHING RUNS IN YOUR BROWSER The remux and the conversion are WebAssembly, executed on your machine. There is no server in the middle, no companion app to install, and no account to create. Nothing you watch or download is uploaded, logged, tracked or sold. FREE, WITH NO LIMITS No sign-up, no watermark, no daily cap, no paid tier holding the good part back. NOTE ON YOUTUBE As required by Chrome Web Store policy, this extension does not download from YouTube; the button is disabled there and says so. It is for content you have the right to save — your own course videos, your own recordings, and media that is licensed to be shared.