Specially formatted optical disk and method of playback

An optical disk having digital image information recorded thereon, the digital image information including frames that correspond to I-picture data for intra-frame coded pictures, P-picture data for predictive coded pictures, and B-picture data for bidirectionally predicted pictures, said disk comprising:

• a plurality of recording sectors, each sector being associated with an address recorded on said optical disk and including a mirror field therein;
• a plurality of tracks, each track including a plurality of recording sectors;
• and
• a plurality of zones, each zone including a plurality of tracks, sector addresses within each zone being aligned along a line extending in the radial direction of said optical disk;
• wherein the digital image information recorded on said optical disk is divided into image information blocks, each image information block including a plurality of frames and being provided with a header at the beginning thereof, the header including information that is accessed during a special playback mode to indicate whether the corresponding image information block should be reproduced,
• wherein each of said image information blocks is arranged on said optical disk in a manner independent of whether the image information block should be reproduced during said special playback mode.