How To Hide Media Files from Android Phone’s Gallery
1. Open your favorite file manager ( eg: es file explorer)
2.Find the specific folder (or album) that you want to be hidden from your android phone’s gallery.
3.Tap rename and put a .(dot) in front of the folder name (with no spaces).( eg: .video )
4.Press OK and done.
Your album or folder is now hidden and will not show up on your gallery. To show it up again, simply remove that dot to make it back to normal.
You can view the hidden files in the file manager, make sure to check the ‘Show hidden files’ in the settings menu.