Both .mepj and .mepx files are projects from various versions of Movavi Video Editor. MEPJ format introduced in version 23.2 is unfortunately not backwards compatible, so there is really no how how to achieve mpej to mepx conversion. It is only possible to resave older projects to new ones.
Updated: July 21, 2023
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
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