Convert opus to mpg

What is the difference between .opus and .mpg?

Description: An OPUS file is an audio file created in the Opus format (also called "Ogg Opus"), a lossy audio format developed for Internet streaming. It uses both SILK (used by Skype) and CELT (from Xiph.Org) codecs and supports variable bit rates from 6 kb/s to 510 kb/s.; The MPG file format, short for MPEG Video, stands for Moving Picture Experts Group Video. It is a popular video file format standardized by the MPEG group, which is known for developing video and audio encoding standards. MPG files are compressed using either MPEG-1 or MPEG-2 compression, making them suitable for storing video data in a compressed form without significantly sacrificing quality. This format is widely used for creating movies that are distributed over the internet due to its good balance between file size and video quality.