MP4 files with airdrop

Hi,

When moving MP4 files from MacBook to iPad pro, even when changing the extension to mp4.infuse, the file lands on the camera roll and cannot be opened with infuse. (When selecting the share button that allows using the file in other apps (“activities”) the infuse app doesn’t appear in the list)

I’m using the latest iOS 9 update with iPad pro and the latest infuse 4

Thanks!