Arbitrary downsizing video transcoding using fast motion vector reestimatlon

Yong Qing Liang, Lap Pui Chau, Yap Peng Tan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

34 Citations (Scopus)


We propose a video transcoding method for arbitrarily downsizing a preeoded video by reestimating from its original motion vectors the new motion vectors required to code the downsized video. Compared with the existing methods for downsizing a precoded video by an integral factor, the main advantage of the proposed method is that the spatial resolution of the precoded video can be freely adjusted to meet different bandwidth and device requirements. Experimental results show that the proposed method can obtain arbitrarily downsized video with good perceptual quality while reducing the computational complexity of the process.

Original languageEnglish
Pages (from-to)352-355
Number of pages4
JournalIEEE Signal Processing Letters
Issue number11
Publication statusPublished - Nov 2002
Externally publishedYes


  • Arbitrary downsizing
  • Motion vector estimation
  • Video transcoding

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics


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