Most users already have the VLC Media Player installed, but many don't realize it's a powerful converter. It is completely free, open-source, and works on Windows, macOS, and Linux.

Go to Media > Convert / Save , add your MPG file, and select the Video - H.264 + MP3 (MP4) profile. 2. HandBrake (Best for Advanced Users)

It’s lightweight, has no ads, and handles almost any legacy MPG file without needing extra codecs.

Converting old DVD-rip MPG files into high-definition MP4s for home media servers. 3. VideoProc Converter AI (Best for Speed and Quality) HandBrake: Open Source Video Transcoder