How to transfer/share videos from video app ??

This all depends on where the content came from originally. If its something you purchased for the iTunes Store, use these steps to transfer your purchases to your computer. Redownload or transfer your iTunes Store purchases from an iPhone, iPad, or iPod to a computer - Apple Support If this is something that came for else where, then you had to use a computer to sync the content to the iPad to get it to appear in the videos app. There is no way to export those synced files from the iPad to another computer or platform. These types of files you would need to obtain form the computer you used to sync the content to the iPad or the original source from which you obtained the video from to start with. Good luck!