Actually, I am trying to create a app with n number of multimedia files which includes images and videos. My apps size is around 34MB, and my assets size is aro
34MB
This is happening because of large size image. Try with small size image i.e. of your phone screen resolution.
I had the same problem. Tried reducing the image size in Paint with 2100 x 1300 px and it worked but the app was lagging very much.