A free app for Android, by Forman force.

AVD Video Downloader gives you the privilege to search, download, and watch any desired video directly from any URL to your mobile device – at lightning speed. There are three notable steps to remember: Use the built in browser to search for your video, or else simply paste the link into the search bar. A roster of videos will emerge, and you have to select the one you want. Then, tap the download button. That is really it.

Other features include: the options to preview your video before download, as well as the option to choose your video quality and path. You can also get several files all in one go. This downloader supports background download, large file downloads, a Pin lock and file hiding feature, a manager that allows you to pause, resume, and remove files, and a built-in player that permits you to stream videos online.