MEPX, Movavi Video Editor Project (.mepx)
The MEPX Video file format
Files with the MEPX extension are usually associated with the Movavi Video Player, a video processing program for Windows, Mac, iOS and Android. MEPX files are project files created in this video editor and thus they don't store actual video data, but links to different video, audio, image and other files used in the project.
Technical details of MEPX files
The MEPX file format might be classified as a video file, however, it is more of a project file of the video editing software by Movavi. Project files do not contain actual video or audio data. Instead, they link different data sources (videos, audio, images, etc.) and store them together with other information such as text, subtitles, transitions and more.