If we want to view any of the videos hosted on YouTube, but we don't have an Internet connection, we have to download them to our hard drive, convert them to the format of our choice and prepare them to be played. If we don't want to have to rely on three different applications to do so, we can always try out Downtube.
Comprehensive solution to download contents from YouTube
From the browser that it includes you can search for any video that you want from YouTube, copy the URL address, download it to your hard drive, convert it to any of the supported formats (MP4, MP3, MOV, MPEG, SWF, 3GP, WMV or DIVX), and you'll be able to make any video compatible with almost any device.
If you're looking for how to create your own video collection based on those that are stored on YouTube, this tool can be one of the key elements to manage it, because it gathers on a single interface all the things necessary to transfer the videos from YouTube to your hard drive, iPod/iPhone, DVD or car multimedia player.