Question [Q] App or method for download video in Movie Store

This Movie Store doesn't let me to download videos to watch them offline and it cannot open video in other apps (MX Player , video downloader apps ... ) .

Any suggestion ? I think I must use App that track URL from Wi-Fi and look up the video URL , or other methods that I don't know. ...

P.S. My video that I want to download is FREE to watch (not PAID). (I can watch it online via Movie Store App but I cannot download to watch them in Internet.)

Sorry for bad Eng. I'm Thai.