Converting and downloading videos from YouTube - like sites was never so easy before. Just surf the Web as you are used to and when ConvertFiles.com Add-on detects it can do something for you, the "unable to convert" icon will change to "convert.files" . In this case just click on the button and a new tab will be opened in your browser. The only thing you have to do now is to select output video format and click on CONVERT.
SUPPORTED VIDEO SHARING WEBSITES