: Navigate to the website containing the video. Play the video to allow the extension to "sniff" the media requests. The MPMux icon in your toolbar will typically brighten or change color when it detects a compatible stream.
"mpmux" (short for Multi-Process Muxer ) is not a typical Firefox extension. It’s a —a separate binary (written in Rust/C++) that Firefox can communicate with via stdio. When Aris installed "Video Downloader Professional Plus," it silently installed mpmux as a background service. video downloader professional plus mpmux firefox work
If you're having trouble, let me know: If the icon is greyed out or not detecting video If you’re getting a "Muxing Failed" error The specific site you’re trying to download from : Navigate to the website containing the video