Video Downloader Professional Plus - Mpmux Firefox 2021 ✔ [ AUTHENTIC ]

MP4 (best for compatibility), MKV (best for subtitles/multiple audio), WebM, 3GP, and audio-only MP3/AAC.

The Mpmux extension stands out due to its focus on technical capability and a hands-off approach to video processing. Video Downloader Professional Plus - Mpmux Firefox

: Automatically converts streaming fragments into a single MP4 file without needing external software. Fast Downloads concurrent multi-threading MP4 (best for compatibility)