Method for reproducing compression-encoded video data

摘要

A method for reproducing compression-encoded video data of an MPEG format by: selecting a user level and a multiplexing level as one level among several levels according to kinds of video data for a sequence and GOP (group of picture) unit to be set as a reproducing level for the user data of the MPEG specification when the video data is compression-encoded according to the MPEG specification; checking whether the reproducing level is set in the user data for sequence in the compression-encoded video data; comparing the user level and the multiplexing level of the reproducing level with an assigned level input by a user corresponding to one of the plurality of levels when the reproducing level is set in the corresponding sequence; halting decoding when the assigned level is not suitable for the reproducing level; checking whether the reproducing level is set in the user data for GOP of the corresponding sequence when the reproducing level is not set in the corresponding sequence or the assigned level is suitable for the reproducing level of the corresponding sequence; comparing the reproducing level with the assigned level when the reproducing level is set in the corresponding GOP; decoding the corresponding GOP when the reproducing level is not set in the corresponding GOP or the assigned level is suitable for the reproducing level of the corresponding GOP; and skipping the corresponding GOP without decoding when the assigned level is not suitable for the reproducing level of the corresponding GOP.