Consistent Quality Oriented Rate Control in HEVC via Balancing Intra and Inter Frame Coding
Wei Gao, Qiuping Jiang, Ronggang Wang, Siwei Ma, Ge Li, and Sam Kwong

TL;DR
This paper introduces a novel rate control method for HEVC that balances intra and inter frame coding to achieve consistent quality, significantly reducing quality fluctuations while maintaining good rate-distortion performance.
Contribution
It proposes a new framework for intra frame quantization prediction and a feature selection method for balanced rate control in HEVC, addressing the trade-off between intra and inter coding.
Findings
Reduces quality fluctuation by 37.2% in PSNR variance
Decreases SSIM variance by 45.1%
Maintains satisfactory rate-distortion and buffer control performance
Abstract
Consistent quality oriented rate control in video coding has attracted much more attention. However, the existing efforts only focus on decreasing variations between every two adjacent frames, but neglect coding trade-off problem between intra and inter frames. In this paper, we deal with it from a new perspective, where intra frame quantization parameter (IQP) and rate control are optimized for balanced coding. First, due to the importance of intra frames, a new framework is proposed for consistent quality oriented IQP prediction, and then we remove unqualified IQP candidates using the proposed penalty term. Second, we extensively evaluate possible features, and select target bits per pixel for all remaining frames, average and standard variance of frame QPs, where equivalent acquisition methods for QP features are given. Third, predicted IQPs are clipped effectively according to…
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