Thanks to all known and unknown friends, as well as staff of MLTD, to make this awesome MV. Also thanks to U2B which provides access to share 4K clips at 60 fps online easily than ever before.
The footage breaks limitation on small phone screen, and can be enjoyed on bigger ones as you like. Benefit of UHD resolution and over 20Mb/s stream, it is ideal to watch it on FHD devices -- 20Mb/s is not enough to feed UHD but good for FHD after downscale as super-sampling. Hardware acceleration is required if your device is not powered by strong chips. AFAIK, 4 physical cores Intel Haswell or later is minimum for smooth decode. Nvidia's Pascal and AMD's Polaris are able to handle playback well too.
[MLTD] Melty Fantasia [Difference Color Ver][4K VP9 60FPS]-blG78jUdZAw.mkv (449.3 MiB)