DivX is a type of mpeg 4 format except it's copyright by a private company. The newer dvd players on the market can also play divx & wmv disks which are simply data disks with divx or wmv files on them. Mine can play DivX/xVid, mp4, wma, HDCD disks, ... yet mine was very cheap. The electronics store i bought it from has their own players made to their own description ... I get trade price.

Normal DVD-video disks are created from Mpeg-2 format video. To see what the contents of a normal dvd look like, see Burning dvd video (click on link)

Roxio Toast & iDVD can burn mpeg-2 video dvd's (the same as the ones you buy.)