Basic consideration of MPEG-2 coded file entropy and lossless re-encoding

Kazuo Ohzeki, Yuǎn Yù Wei, Eizaburo Iwata, Ulrich Speidel

研究成果: Conference contribution

抄録

Re-encoding of once compressed flies is one of the difficult challenges in measuring the efficiency of coding methods. Variable length coding with a variable source delimiting scheme is a promising method for improving re-encoding efficiency. Analyses of coded flies with fixed length delimiting and with variable length delimiting are reviewed. Motion vector codes of MPEG-2 encoded files are modified as a variable-to-variable coding point of view. Length, bit-rates, and varieties of videos are examined. The largest file is 16 seconds of D1 full size at 720 ×480 among five video files. By entropy evaluation, an improvement of almost 20% in coding efficiency over the conventional MPEG-2 is obtained.

本文言語English
ホスト出版物のタイトルProceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010
出版社IEEE Computer Society
ページ741-748
ページ数8
ISBN(印刷版)9788360810279
DOI
出版ステータスPublished - 2010 1 1

出版物シリーズ

名前Proceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010
5

ASJC Scopus subject areas

  • コンピュータ サイエンス(その他)
  • 情報システム

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