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

Author

Huang, Kan-Li ; Tung, Yi-Shin ; WU, JA-LING ; Hsiao, Po-Kang ; Chen, Hsien-Shuo

Author_Institution

Dept. of Comput. Sci. & Inf. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

48

Issue

3

fYear

2002

fDate

8/1/2002 12:00:00 AM

Firstpage

522

Lastpage

532

Abstract

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 can not only change the bitstreams´ syntax and bitrate but can also 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 a motion mode for each macroblock of B-VOPs in an MPEG-4 video to avoid some unpredictable artifacts due to mis-selection of the motion mode. This representative application demonstrates the potential usage of such frame-based characteristics.

Keywords

feature extraction; image motion analysis; video coding; MPEG characteristics extraction; MPEG-2; MPEG-4; frame type conversion; frame-based characteristics extraction; group of pictures; motion mode; semantic video segment; video shot boundary detection; video transcoding; Application software; Bit rate; Data mining; Decoding; Gunshot detection systems; Information retrieval; MPEG 4 Standard; Transcoding; Transform coding; Video compression;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/TCE.2002.1037037

Filename

1037037