CD-i Digital Video was a short-lived video disc format introduced by Philips in 1993 that was designed to be played in CD-i players equipped with an optional Digital Video Cartridge. This expansion unit contained a 32 bit RISC processor and 1 MB of RAM to provide MPEG-1 decoding.
CD-i Digital Video followed the Green Book standard for CD-i discs, making it incompatible with the Video CD format introduced shortly afterwards that followed the White Book standard. However, whilst Video CD players could not play CD-i Digital Video, CD-i players with the optional Digital Video Cartridge could play both formats. Some other CD-i discs such as games also made use of the Digital Video Cartridge to play video.
One of the two differences between the formats was the resolution, that was slightly higher on CD-i Digital Video (384×288 instead of 352×288 for Video CD). When a Video CD is played on a CD-i player, slightly larger pixels are displayed to fill the screen.
Only around 20 movies were released on CD-i Digital Video before Philips switched to Video CD for distributing movies in 1994.
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