Downloading streaming video in Firefox

Video Downloader - Download videos that are streamed by YouTube and Google Video, among many others.

Link: https://addons.mozilla.org/firefox/2390/

What if the video is on some other page; say, a blog ?

1) View the source of the page.
2) Search for video.google
3) Remember the part docId=-2801785420316066705 (where the number will be different, most probably).
4) In your browser, go to:
http://video.google.com/videoplay?docid=-2801785420316066705
(substiture the number from above).
5) Click on the VideoDownloader button near the bottom right corner of the Firefox window.
6) In the popup which appears, choose the type of video you want to save, and save it.