(1) First off, get the ffdshow encoder here :
(after you install it make sure to restart you computer)
(2) Open MMD
(3) click "view(V)"
(4) click "screen size(O)"
(5) type one of the number combinations (1, 2 or 3) :
1 : width=1280 height=720 (this will give you 720p)
2 : width=1920 height=1080 (this will give you 1080p
3 : width=2560 height=1440 (this will give you 1440p)
(6) "Click file(F)" then click "render to AVI file(V)"
(7) Chose a file name and where to save it
(8) set the "frame rate" to 60
(9) Set what frames to render
(10) In the "video compressor"click it and select ffdshow