File Centipede can download videos from more than 99% of websites.
It even can analyze video addresses from Javascript, and extract decrypted video-key from Javascript closure. For some special websites, only File Centipede is able to download its video.
It provided two easy ways to download videos or audio from the webpage.
1: Download from the floating bar beside of video.
2: Download from the popup window.
download web videos from popup
File Centipede is the best Linux download manager.
It's the only one that supports all mainstream protocols and the video sniffer's Linux download manager.
It also contains tons of auxiliary tools like file-merge, checksum, base64-encoder, URI-encoder, and magnet-to-torrent......
You can also use it to manage remote files like WebDAV, FTP, and SSH.
It's very easy to install, only need one click, and it has no other dynamic libraries requirement, even Glibc.