Live Demonstration: Multi-Laptop HEVC Encoding

This paper presents a demonstration setup for distributed real-time HEVC encoding on a multi-computer system. The demonstrated multi-level parallelization scheme is implemented in the practical Kvazaar open-source HEVC encoder. It allows Kvazaar to exploit parallelism at three levels: 1) Single Inst...

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Bibliographic Details
Published inIEEE International Symposium on Circuits and Systems proceedings p. 1
Main Authors Ahovainio, Sami, Mercat, Alexandre, Vanne, Jarno
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2020
Subjects
distributed HEVC encoding
Encoding
HEVC
High efficiency video coding
multi-computer systems
multi-level parallelization
Open source software
Parallel processing
Portable computers
Real-time systems
Streaming media
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ISBN9781728133201
1728133203
ISSN2158-1525
DOI10.1109/ISCAS45731.2020.9180962

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Summary:This paper presents a demonstration setup for distributed real-time HEVC encoding on a multi-computer system. The demonstrated multi-level parallelization scheme is implemented in the practical Kvazaar open-source HEVC encoder. It allows Kvazaar to exploit parallelism at three levels: 1) Single Instruction Multiple Data (SIMD) optimized coding tools at the data level; 2) Wavefront Parallel Processing (WPP) and Overlapped Wavefront (OWF) parallelization strategies at the thread level; and 3) distributed slice encoding on multi-computer systems at the process level. This interactive demonstration allows visitors to gradually increase the degree of parallelism in Kvazaar and see the benefits of parallelization in live HEVC encoding. Exploiting all three levels of parallelism on a three-laptop setup speeds up Kvazaar by almost 21× over a non-parallelized single-core implementation of Kvazaar.
ISBN:9781728133201
1728133203
ISSN:2158-1525
DOI:10.1109/ISCAS45731.2020.9180962