How to rip Blu-ray to 4K video?

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Sothink Blu-ray Ripper, as a senior and powerful Blu-ray ripper software has added the 4K feature in soon after the technology is output. It can read all kinds of Blu-ray discs/ISOs/folders, and easily convert them to 4K movies like MP4.4K, MKV.4K, 3D MP4.4k and 3D MKV.4K. This is a tutorial video describing how to rip Blu-ray to 4K video with Sothink Blu-ray Ripper. You can find more info from: http://www.sothinkmedia.com/blu-ray-ripper/rip-bluray-to-4k-movie.htm.