About
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.
It is intended only for content the user is authorized to access. The release notice limits use to personal archival and study and asks users to respect copyright.
Problem
Saving authorized Bilibili media often requires desktop software, command-line setup, or manual stream merging. Bili-Mux puts those steps inside the video page.
Who it is for
Chromium users saving authorized Bilibili media for personal study or archival use.