The once generally accepted TDX2002 ruleset requires movie releases to contain a DivX 3.11 or Xvid encoded video stream with an MP3 or AC3 encoded audio stream in an AVI container file. Movies are released in one, two or more 700 MiB files, so that they can be easily stored on CD-R. Two or four TV show episodes usually share one CD, hence 175 or 350 MiB releases are common. 233 MiB (three episodes per CD) are more rare but not forbidden, and are often used for full 30-minute programs with no adverts. 233 MiB is more used on whole season rips from retail sources or on single episodes that have a longer runtime. In July 2002, around the release of the new TDX2K2 ruleset, Xvid releases started to pop up. DivX with SBC was retired. VCDVaULT was the pioneer in promoting Xvid to the scene.