Thanks for your reply Gavin Henrick.
I have one doubt . Khan Academy uploads videos on Youtube but that videos are downloadable from its app(khan Academy Mobile App) . Can similar feature be implemented in moodle Mobile App.? as videos take lot of space so hosting takes lot of money and thats why youtube is the only option to upload videos.
this will be nice feature.
I have Created an issue in the tracker... MOBILE-2183 start watching and Vote if you feel same.