Reverse-play technique on compressed video across GOP boundaries

Chang Hong Fu, Yui Lam Chan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


In modern video coding standards, they are mainly designed for normal forward playback. Recently, we have developed a macroblock-based reverse-play scheme for compressed video bitstreams. By exploiting the motion relationship between two adjacent frames, this scheme can significantly reduce the requirements on the decoder complexity and network bandwidth during reverse playback. However, the MB-based technique does not works well on traversing GOP boundaries reversely since no inter-frame prediction takes place between the last frame of one GOP and the first frame of its succeeded GOP. In this paper, by utilizing a new SP picture type in the H.264, we can solve the GOP discontinuity problem by building linkages across GOP boundaries. Instead of arranging the primary SP-frame before the I-frame, a novel scheme is proposed to allocate various macroblocks within the GOP to be encoded as the SP type. This new arrangement for SP coding is specially designed for our macroblock-based reverse-play scheme and can be proved to eliminate the possible mismatch effect for reverse playback across GOP boundaries. With this allocation strategy, results from our experimental work confirm that the inherent GOP discontinuity problem can be avoided without introducing any mismatch between forward and reverse playback.
Original languageEnglish
Title of host publication2008 IEEE International Conference Neural Networks and Signal Processing, ICNNSP
Number of pages6
Publication statusPublished - 22 Sept 2008
Event2008 IEEE International Conference Neural Networks and Signal Processing, ICNNSP - Zhenjiang, China
Duration: 7 Jun 200811 Jun 2008


Conference2008 IEEE International Conference Neural Networks and Signal Processing, ICNNSP


  • GOP boundary
  • H.264 video
  • Reverse playback
  • Video cassette recording (VCR)

ASJC Scopus subject areas

  • Artificial Intelligence
  • Signal Processing


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