A frame-based MPEG characteristics extraction tool and its application in video transcoding

被引：8
|
作者：
Huang, KL [1 ]
Tung, YS [1 ]
Wu, JL [1 ]
Hsiao, PK [1 ]
Chen, HS [1 ]
机构：
[1] Natl Taiwan Univ, Dept Comp Sci & Informat Engn, Commun & Multimedia Lab, Taipei 10764, Taiwan
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2002年 / 48卷 / 03期
关键词：
D O I：
10.1109/TCE.2002.1037037
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper we present a frame-based characteristics extraction tool, which can retrieve meaningful information from MPEG-compressed bitstreams. Taking advantage of the extracted information, we present a general architecture for MPEG video transcoding, which can transcode a given MPEG video bitstream into various MPEG video bitstreams with different characteristics. We also implement an MPEG-2-to-MPEG-4 video transcoder, which not only can change the bitstreams' syntax and bitrate but also can encode each semantic video segment as a group of pictures (GOPs), by using the techniques of frame type conversion and video shot boundary detection. Moreover the proposed transcoder can intelligently select motion mode I for each macroblock of B-Vops in an MPEG-4 video to avoid some unpredictable artifacts due to mis-selection of motion mode. 77;is representative application demonstrates the. potential. usage of such frame-based characteristics.
引用
收藏
页码：522 / 532
页数：11
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