| 摘要 |
When zoom playback is performed using a three-plane structure frame buffer in a video playback apparatus, decoding of a zoom target portion is sometimes not completed by a display start time, leading to deterioration in displayed video. In order to solve this problem, only a portion of a coded video data stream to be displayed by a zoom function is decoded without decoding the coded video data stream other than the portion to be displayed during zoom playback, whereby the decoding speed for one piece of data is reduced, resulting in zoom playback having no video distortion.
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