Disc apparatus, controlling method thereof, and controlling program thereof

摘要

Main AV data having a high resolution and sub AV data are recorded on a disc. The sub AV data has been compression-encoded in accordance with the main AV data at a higher compression rate than the main AV data. When it has been determined that since a buffer underflow takes place in a seek from a designated OUT point to a designated IN point of the sub AV data and it cannot be reproduced in real time in accordance with an edit result of AV data recorded on the disc, a bridge clip is created so that the seek time becomes short. At that point, a reproduction range of the main AV data corresponding to the sub AV data is compression-encoded in accordance with a compression-encoding system of the sub AV data. As a result, a bridge clip for sub AV data is created.