Can we install Amazon video app on external SD card?

I am an Amazon Prime user. The Amazon Video App allows us to download the video to the phone so that we can watch them without wifi connection. I have a Samsung S5 phone 16G version. When I download a movie, the amazon app size increases. I think that the app somehow hold the movie data within itself. Normally, I can only download 2 movies into my phone because I have many apps and the system itself talks space. May I know whether there is anyway to put the app on SD card?