Visually Optimized Two-Pass Rate Control for Video Coding Using the Low-Complexity XPSNR Model

Two-pass rate control (RC) schemes have proven useful for generating low-bitrate video-on-demand or streaming catalogs. Visually optimized encoding particularly using latest-generation coding standards like Versatile Video Coding (VVC), however, is still a subject of intensive study. This paper desc...

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Veröffentlicht in:Visual communications and image processing (Online) S. 1 - 5
Hauptverfasser: Helmrich, Christian R., Zupancic, Ivan, Brandenburg, Jens, George, Valeri, Wieckowski, Adam, Bross, Benjamin
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 05.12.2021
Schlagworte:
Distortion
Image coding
Numerical models
QoE
rate control
Software
Video coding
Visual communication
Visualization
VoD
VQA
VVC
ISSN:2642-9357
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Zusammenfassung:Two-pass rate control (RC) schemes have proven useful for generating low-bitrate video-on-demand or streaming catalogs. Visually optimized encoding particularly using latest-generation coding standards like Versatile Video Coding (VVC), however, is still a subject of intensive study. This paper describes the two-pass RC method integrated into version 1 of VVenC, an open VVC encoding software. The RC design is based on a novel two-step rate-quantization parameter (R-QP) model to derive the second-pass coding parameters, and it uses the low-complexity XPSNR visual distortion measure to provide numerically as well as visually stable, perceptually R-D optimized encoding results. Random-access evaluation experiments confirm the improved objective as well as subjective performance of our RC solution.
ISSN:2642-9357
DOI:10.1109/VCIP53242.2021.9675364