VideoPad program can export its own project to several formats, including MPG. There probably is no way how to otherwise perform this conversion.
Convert VideoPad video editor project to MPEG 1 video file format.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert vpj to mpg on Windows
A video editing software for Windows
Convert from vpj 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.