How it works, you ask? It's easy! When Video DownloadHelper detects a video on your page, the toolbar icon will activate. Click on it to see the clips that can be downloaded and go with it! You can install this on Firefox or on Chrome. I'm pretty sure that you can use it on other browsers, too. Or not? So you understood what's going on here? Do you want a video from Youtube? DownloadHelper will take it down for you. Add it on your stick and watch it in your car. Or do whatever you want!
Oh, I think I should tell you that this little app is a browser extension, in case that you did not realise this from what I've said above. The menu will show you a few buttons. First would be Install, obviously! The next one will be Video Sites. On this page you will see where you can use this plugin. A few examples would be Youtube, DailyMotion, Facebook, Vimeo, StreamCloud, VK, Twitter - not only that they share all the most important tubes and social networks, but they also have less-known ones or adult platforms, on 12 pages. A lot of fucking options! You can sort them by all sites, all-public sites or adult. Also, you can sort them by popularity, recency, interest, rating or name.
For every addition of platform, if you will hover your mouse on the name of it, you will see a little screenshot that comes from the homepage of the destination. You can even click to find out details about it, like how popular that video site is, what rating it has and so on. Nice, in my opinion! You can find new places by seeing this comprehensive list.
I need to tell you that you can approach older versions of the plugin, if by any reason, you want to do so. Also, they have a premium section where you can pay some money to have more control over the conversion. Don't worry, you can still use the plugin for free without any real issues.
In the end, I will say a few things about the Support page. Go there if you need details about the download process or about the conversion. Or if you want to learn how to hookup with your hot neighbor, that blonde babe with big natural titties, in her 30s! Got it? Click on the screenshot!