ClipGrab is fairly popular application to download video from famous sites of the Internet. It allows you to search video with in application and select to download the video or other way you can copy and paste the video URL to the application to download the video. Since famous video sites are supported by this application, if some site isn’t officially supported, you may still be able to download the videos from it.
Recently ClipGrab team released new version 3.6.4 for all platforms, which brought some improvements and update to the application. There is no changelog available so we exactly don’t know what has been changed and what fixes were done.