The only wsve to mp4 conversion that would make sense is export of Wondershare Filmore projects (.wsve) to MP4 multimedia file (.mp4). As far as we know, this can only be done using Filmora and no 3rd party software will help you with this conversion.
Convert Wondershare Filmora project to MPEG-4 video file format.
We found one software available in the database for this conversion.
Multiplatform software - convert wsve to mp4 on any platform
All-in-one home video editor
Convert from wsve file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.