Vidmate is the android app that will allows you to search and download the videos on the web. You can download any video using the vidmate app. if you want to download the youtube video, vidmate allows you to search the youtube interface and there is separate search bar for searching the youtube video and just click on the video to download.
vidmate video quality decision
While you are downloading the video from the vidmate interface, first you will search the video and you decided to download it, after clisck on download button, vidmate telld you which quality you want to download the video if it is 3gp format, mp4 format, mkv etc. there will be variation in the memory size of the file, and you can chose according to your wishe.