Adobe Premiere Pro supports MPEG-4 videos and can use them in their projects (*.prproj) so it is the obvious and most likely only choice for this type of conversion.
Convert MPEG-4 video file format to Adobe Premiere Pro project.
We found 2 software records in the database related to .mp4 to .prproj file format conversion.
Microsoft Windows software - convert mp4 to prproj on Windows
A timeline-based video editing software from Adobe
Convert from mp4 file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned mp4 to prproj. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert mp4 to prproj on OS X
Mac version of Adobe's prime video editing software