IAdea recommends using H.264 (MPEG-4 AVC) for MR-1100 player, XMP-6200/6250/6400 player, XDS-1060/1062/1068/1078 signboard.
If you have a video created in other format, you may convert it to H.264 video format using video conversion software.
Converting videos with WinMEnc
http://support.iadea.com/entries/21429223-converting-videos-with-winmenc
For XMP-7300, please refer to the page below:
http://support.iadea.com/hc/en-us/articles/213089446-How-to-transcode-4K-H-265-video-using-ffmpeg-