It’s faster than FFmpeg for simple audio track swaps and preserves original video quality perfectly.
The short answer: , but you can achieve the same result inside Firefox using pure WebAssembly (WASM) or by pairing Firefox with a local server tool. mpmux for firefox
: For large files, the extension uses concurrent request technology to download different segments of the video simultaneously, significantly boosting speed. It’s faster than FFmpeg for simple audio track
Before installing any Firefox extensions, you need the backend tools installed on your operating system. mpmux for firefox
This usually means yt-dlp is outdated. Streaming sites like YouTube frequently change their code.