Conversion of mepx files to mp4 file format

As far as we know, the only reliable way to produce MP4 file from .mepx project would be to use program in which these projects were made - Movavi Video Editor. Except for that, it is unlikely that any other software is capable of mepx to mp4 conversion, because the overall support for MPEX format is pretty low.

Open MEPX file    Open MP4 file