MPEG-1 video, used in VideoCDs, is defined for non-interlaced, computer-type data streams. It is the form normally used with PCs. Typical MPEG-1 video compression ranges up to 100:1 for images comprised of 352 pixels (picture elements) by 240 lines at a refresh rate of up to 30 frames per second with 24-bit colour and CD-quality sound.
