i want volume , brightness swipe gesture and forward, back forward, pip, save video offline like mxplayer, autorotaion and screen cast add these feature in existing flutter ott project. i will provide you source code of this project

I am looking for a freelancer to add some features to my existing Flutter OTT project. The features I am looking for include volume and brightness swipe gesture, forward, back forward, Picture-in-Picture (PIP), save video offline (like MXPlayer), autorotation, and screen cast. As I have the source code for the existing project already, it should be relatively straightforward for the freelancer to implement the listed features. The added features should be implemented for both Android and iOS platforms.