1- Our app user should able to edit these : all Texts, Videos,Images & Videos using AFTER EFFECT TEMPLATES and after edit Users should able to export/render as mp4 (video) - i can guide you for this how to use After Effects templates for Web
2- once above function is ready then add/merge that is our NATIVE Android App ( You will create api for that)
NOTE: This above video will be post as user normal video what user posting alreading in our app, Also text,image,video fields qty would be visible on app according to templates .
ADMIN( WE HAVE admin panel, just put templates manage link there to import after effect web exported templates):-
1- add/delete templates