Projects from VideoPad video editing software (.vpj) can be exported and saved to several multimedia formats, including QuickTime movies (.mov). But you can only do that in the original VideoPad and no 3rd party software would help you with this vpj to mov conversion.
Convert VideoPad video editor project to Apple QuickTime digital video.
We found one software available in the database for this conversion.
Microsoft Windows software - convert vpj to mov 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.