ImTOO Online Video Downloader is a commercial video downloader. The application can be used to download videos from various websites, including YouTube, Metacafe, Dailymotion, and many more. This app is basically a web browser. You go to the webpage of the video that you want to download and the download button will become active. If you click on it, the video will be downloaded in its original format. For videos on YouTube, the application downloaded FLV files for me.
The graphical user interface is very simple. At the top, you will see a toolbar with different buttons. One of those buttons is the download button. On the pane below that, you will be able to use the web browser. If you are trying to download a HD video from YouTube, you will have to first select that quality when the video is playing, and after the video reloads, you can click on the "download" button.
On the left part of the screen, you can access a list of videos that are being downloaded, those that were already downloaded or all of them on the same screen.
In short, this is a very nice video downloader. It works well and it supports many video-sharing websites. At $9.95, it is not an expensive app to buy.