Optimum Quality Control Algorithm for Versatile Video Coding

Mingliang ZHOU, Xuekai WEI*, Cheng JI, Tao XIANG, Bin FANG

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

8 Citations (Scopus)


We propose a quality control method that replaces rate control in video coding and achieves quality control with the minimum bit rate. First, based on the rate-distortion model, we establish a Karush-Kuhn-Tucker equation considering the convergent properties of variational inequalities to solve the continuous convex problem. Second, combined with the rate-quality (R-Q) model, the proposed algorithm is implemented under versatile video coding (VVC) to obtain the optimal closed-form solution for the quantization parameters of a coding unit through the Lagrange multiplier method. Experiments reveal that our algorithm can achieve stable video coding quality while guaranteeing coding performance, achieving high quality control accuracy with constant quality.

Original languageEnglish
Pages (from-to)582-593
Number of pages12
JournalIEEE Transactions on Broadcasting
Issue number3
Early online date4 Feb 2022
Publication statusPublished - Sept 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1963-12012 IEEE.


  • constant quality
  • Quality control
  • rate control
  • rate-quality
  • VVC


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