SnapChat similar feature: Taking a video/ Showing stories. (Android)

my app requires adding similar features of SnapChat as the following (Bids with no clear proposal or with no prior reading the project description will be disqualified, preferred someone did this before) Everyone is familiar with stories of fb/Insta/SnapChat, we want to integrate this feature to our app, so we want someone to develop this feature which includes the following: 1) Ability to add Snaps/videos SAME as SnapChat i.e 10 sec, widescreen, two cameras, two cameras.. 2) Viewing Stories SAME as SnapChat/FB i.e how to move from one snap to another, how to add comments, close the story Guidelines: 1) videos should be stored on Firebase Storage. 2) no need to focus on UI, we just with a one home screen with stories/Camera icon and another screen how to capture videos. 3) Features should be working as same as the concept of stories. I saw some people talk about it: [login to view URL] [login to view URL] [login to view URL]