Two Pass Rate Control for Consistent Quality Based on Down-Sampling Video in HEVC

Yu Yao Shen, Chih Hung Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Rate control plays an important role in video coding and streaming applications with bandwidth constraints. While most researches are proposed to improve the coding efficiency' the fluctuation of video quality is seldom considered. Many rate control schemes suffer from unreliable initialization of coding parameters, which leads to seriously inconsistent quality at the beginning of a video. Besides, the hierarchical structure for frame references introduces more quality fluctuations, although it improves the coding efficiency significantly. This paper presents a two pass rate control method that aims for a consistent visual quality. The video is downsampled by four times, and then encoded for the first pass. A fixed Lagrange multiplier (\lambda) is derived from the information recorded in the first pass, and then applied for all frames in the second coding pass. A QP adjustment policy is adopted to maintain a consistent quality and a constant bitrate. Experimental results show that the proposed rate control method can reduce the fluctuation of video quality to be averagely 94.63% less than that encoded by the HEVC Test Model (HM16.9).

Original languageEnglish
Title of host publication2018 IEEE International Conference on Multimedia and Expo, ICME 2018
PublisherIEEE Computer Society
ISBN (Electronic)9781538617373
DOIs
Publication statusPublished - 2018 Oct 8
Event2018 IEEE International Conference on Multimedia and Expo, ICME 2018 - San Diego, United States
Duration: 2018 Jul 232018 Jul 27

Publication series

NameProceedings - IEEE International Conference on Multimedia and Expo
Volume2018-July
ISSN (Print)1945-7871
ISSN (Electronic)1945-788X

Conference

Conference2018 IEEE International Conference on Multimedia and Expo, ICME 2018
CountryUnited States
CitySan Diego
Period18-07-2318-07-27

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications

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  • Cite this

    Shen, Y. Y., & Kuo, C. H. (2018). Two Pass Rate Control for Consistent Quality Based on Down-Sampling Video in HEVC. In 2018 IEEE International Conference on Multimedia and Expo, ICME 2018 [8486544] (Proceedings - IEEE International Conference on Multimedia and Expo; Vol. 2018-July). IEEE Computer Society. https://doi.org/10.1109/ICME.2018.8486544