Video downloader allow to download video files from any online video player. 

It has few  limitation: 

1. To find out the video file, you first need start playing it in the player on the page, then click the extention icon, and you will able to download it.
2. If instead of downloading, it start showing it in your browser, just press "Save page as ...".
3. Some files saved without file extention, so rename the file depend on the type, that displayed in the list.

Best regards,
Lev