Convert rmvb to mpg

What is the difference between .rmvb and .mpg?

Description: An RMVB file is a Real Media video file compressed using a variable bit rate, which is optimized for the content of the video. It is a newer variation of the standard Real Media (.RM) file format that allows for more efficient compression.; 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.