Convert rmvb to divx

What is the difference between .rmvb and .divx?

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.; A DivX-Encoded Movie File, designated with the .divx file extension, is a digital video format that offers a high-quality, highly compressed viewing experience. Developed by DivX, LLC, this format is designed to compress lengthy video segments into smaller sizes without significantly sacrificing visual quality. This enables users to store and distribute high-definition videos more efficiently over limited bandwidth or storage capacities. The DivX codec, which is required to play these files, supports advanced multimedia features such as multiple video streams.