To install mpg2ppm, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install mpg2ppm
To see what files were installed by mpg2ppm, run:
port contents mpg2ppm
To later upgrade mpg2ppm, run:
sudo port selfupdate && sudo port upgrade mpg2ppm
Reporting an issue on MacPorts Trac
The MacPorts Project uses a system called Trac to file tickets to report bugs and enhancement requests.
Though anyone may search Trac for tickets, you must have a GitHub account in order to login to Trac to create tickets.