Convert All HD/4K Videos to iPhone 8/8 Plus/X for Playback

Try to put your SD/HD/4K videos in MKV FLV AVI format to your iPhone 8 (Plus)? Feel thirsty for showing off the video recorded at a wedding on the latest iPhone X's super Retina display? Let's start from here https://www.mediadimo.com/iphone-8-x-video-converter.html