In-page panel
Selects covers and streams on Bilibili video pages
哔哩喵 / Bili-Mux
A browser extension for downloading Bilibili covers and media streams and muxing MP4 files locally.
Browser Extension · China
What it does
Bili-Mux is a Manifest V3 extension that adds a download panel to Bilibili video pages. It saves original covers, downloads DASH video and audio streams, and muxes MP4 files locally with ffmpeg.wasm.
It supports FLV segment merging, batch work for multi-part videos, and tab isolation. Processing runs in the browser, the source is public, and a Chrome Web Store listing is available.
Saving authorized Bilibili media often requires desktop software, command-line setup, or manual stream merging. Bili-Mux puts those steps inside the video page.
Key capabilities
DASH downloads
Saves available video and audio streams separately
Local muxing
Uses ffmpeg.wasm to package MP4 files in the browser
FLV and multi-part support
Merges segments and handles multi-part videos
Local isolation
Uses no processing backend and isolates work across tabs
Who it's for
Chromium users saving authorized Bilibili media for personal study or archival use.
Developer and team
zkop
Product details
- First published
- Aug 22, 2026
- Category
- Browser Extension
- Location
- China
- Website
- chromewebstore.google.com
- Updated
- Sep 8, 2026
Sources
- OfficialOfficial product page
- Public sourceV2EX discussion
- Updated
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