Patent ID: 8249432
Filing Date: 2012-08-21
Classification: H04N

Abstract:
1. A video and audio playback apparatus for reading out a video and audio data including an I picture of MPEG which is a first video data encoded by an intra-frame encoding, a P picture or B picture of MPEG which is a second video data encoded by an inter-frame prediction encoding, and an audio data corresponding to a video frame of the first video data or the second video data from a recoding medium and for playing back the video and audio data, the apparatus comprising: an input unit configured to receive a playback speed of n times of a standard speed; a deciding unit to determine a first rate at which the first video data is extracted from the video and audio data, a second rate at which the audio data is extracted from the video and audio data, and the number of times which the first video data extracted is played back, in accordance with the playback speed received by the input unit; a first extraction unit configured to extract the first video data from the video and audio data at the first rate decided by the deciding unit; a second extraction unit configured to extract the audio data from the video and audio data at the second rate decided by the deciding unit; a video playback unit configured to playback the first video data extracted by the first extraction unit the number of times determined by the deciding unit; and an audio playback unit configured to playback once the audio data extracted by the second extraction unit; wherein the deciding unit decides to extract one I picture per one group of pictures (GOP) (a number of frames is n1) from the video and audio data, play back the I picture n1/n times, and extract the audio data of continuous frame with a rate of one frame per n1 frames from the video and audio data.