Используйте приложение APKPure
Историческую версию MPG to MP4 Converter можно получить на Android
Конвертировать MPG видео файлы в MP4
With this easy to use mpg to mp4 converter you just have to select your mpg file and click convert button. You will get converted mp4 file in no time based on length of your input mpg video file. MPG to MP4 Converter includes library that lists your all the conversions. You can play or remove files from library as you want. Happy converting :).