You can also search for the videos right from the application and download them. Supported video sites include YouTube, Vimeo, DailyMotion, Clipfish, Collegehumor, MyVideo, MySpass, Sevenload, Tudou. You can convert the download videos to MP4, OGG Theora, MP3 (audio), WMV and OGG Vorbis (audio). HD videos can also be downloaded provided they are supported by the video service.
ClipGrab can be very useful if you find the new mode of copying flash videos on Linux unnecessarily tedious. You can install ClipGrab on Ubuntu thus
sudo add-apt-repository ppa:clipgrab-team/ppa
sudo apt-get update && sudo apt-get install clipgrab