There are so many good video converters, and WonderFox HD Video Converter Factory Pro is one of the best, which also support 4K/8K videos. The software meets all your desires to downscale 4K to 1080P, 1080P to 720P with the best output quality and the fastest conversion speed. Another obvious feature is that it allows 4K video to be converted to other popular video formats such as AVI, MOV, MP4, MKV, WMV, etc., for more use. Below is the tutorial on how to convert 4K video to 1080P. Free downloadFree download this software to get started!