How to make google play expansion file for the apk bigger than 100mb



I have built my app and its size is ~300mb because it has some .mp4 video files.

So, I tried to split the app into an APK and expansion file to upload google play.
but, I couldn’t find how to do this…

Could anybody help me find out how to do it?
Thanks in advance.

Cordova CLI: 6.4.0
Ionic CLI Version: 2.1.8
Ionic App Lib Version: 2.1.4
OS: macOS Sierra
Node Version: v7.1.0