Search for "Video Downloader Professional - MPMux" in the Firefox Add-ons marketplace and click Add to Firefox .
Using the extension is straightforward, as it integrates directly into your toolbar. Video Downloader Professional Plus - Mpmux Firefox
Navigate to the page containing the video you want to save. The MPMux icon in your toolbar will typically change color or display a notification when it "sniffs" a media file. Search for "Video Downloader Professional - MPMux" in
Click the download icon next to your desired file. For large or streaming files, a separate tab may open to manage the caching and merging process; do not close this tab until the download is complete. Safety and Security and AVI .
It handles static video files such as MP4, WebM, FLV, OGG, and AVI .