Stereoscopic video reproducing method, stereoscopic video reproducing apparatus and optical disc

A stereoscopic video reproducing apparatus using left-eye images and right-eye images comprising:

• a decoder which decodes a primary digital image block for a primary image, and which decodes a secondary digital image block for a secondary image;
• and
• a reproducer which reproduces a stereoscopic image with said decoded primary and secondary images,
• wherein said primary digital image and said secondary digital image are compressed in MPEG compression method,
• wherein said primary image is used as one of a left-eye image and a right-eye image according to information indicating said primary and secondary images are used for reproducing said stereoscopic image, and a data flag indicating whether said primary image is used as one of a left-eye image and a right-eye image,
• wherein said secondary image is used as the one of the left-eye image and the right-eye image for which said primary image is not used, and
• wherein said secondary image is dependent on image information in said primary image in such manner that said secondary digital image block is derived from said primary digital image block.

An optical disc on which is recorded image data used for reproducing a stereoscopic video comprising:

• a primary digital image block for a primary image used as one of a left-eye image and a right-eye image when a stereoscopic video is reproduced;
• a secondary digital image block for a secondary image used as the one of said left-eye image and said right-eye image for which said primary image is not used when said stereoscopic video is reproduced;
• information indicating said primary and secondary images are used for reproducing said stereoscopic image;
• and
• a data flag which indicates whether said primary image is a left-eye image or a right-eye image,
• wherein said primary digital image and said secondary digital image are compressed in MPEG compression method, and
• wherein said secondary image is dependent on image information in said primary image in such manner that said secondary digital image block is derived from said primary digital image block.