1. Take a screen shot :)
It’s obvious, but sometimes the obvious might get forgotten. To save an Instagram image, you can easily take a screen shot and that’s it.
2. Instagram Video Saver: To Save Videos and Images from a Public Instagram Profile
If the mentioned application doesn’t work on your device for any reason, you still have plenty of other choices to use, which function with the same method as Instagram Video Saver does. Some of these applications
Video Downloader for Instagram, instadown, and InstaSave - Instagram Save.
3. GetThemAll: To Save Videos and Images from a Private Instagram Profile
SO, what is your favorite way to save and download Instagram videos on Android?