videos from iPhone is not possible as Apple does not have features to do this.
But if your device is jailbroken, then you are in luck and can download any
videos from iPhone with this new jailbroken cydia tweak which is available for free of cost in Cydia from ModMyi repo and is compatible
with iOS 9. This tweak is all in one video downloader for iPhone so you don’t
need to download separate tweak for youtube, facebook or for any other video
downloading tweak to download videos.