What are muxing and demuxing?
They are short for multiplexing and demultiplexing, respectively. Multiplexing is the process of building a project in your authoring program so that it can be burned to DVD and read by a standard DVD player. This is normally the last step in making a DVD, though you will often multiplex to test the DVD as you author. Conversely, demultiplexing is the process of taking a burned DVD and extracting the original audio, video, etc. As you might expect, demuxing is controversial and can be illegal depending on which DVD you are demuxing. So please tread carefully.
