CDVD
cDVD ("Compact DVD") discs, also known as mini-DVD discs (not to be confused with 8 cm DVDs), are regular data CDs that contain MPEG-2 or MPEG-1 video structured in accordance with the DVD-Video specifications (such as a VIDEO_TS directory containing properly authored IFO/BUP and VOB files, typically on a Mode 1 data track formatted with the UDF 1.02 filesystem). In the early 2000s, CD recorders and their discs were significantly more available and inexpensive than DVD-R equipment, promoting demand for miniDVD; however, DVD-Video content on other media does not conform to specifications.