Making Playlist from File Sharing
To create a playlist using file sharing, simply connect your iOS device to your computer.
In the Finder sidebar on your Mac, select your iPhone.
Go to the files tab , find the Video Playback folder .
Click on files and drag FOLDER from your computer( needs to drag folder , not individual files) to the Video Playback app.
By naming the folder to the proper scene number the iOS app will create and display a new playlist and will contain all the videos that was included in the original folder in your computer
IMPORTANT:
Please format all your videos PORTRAIT MODE with the device's native RESOLUTION in H264 format.