Abstract
The newly emerging video coding standard H.265/HEVC, jointly developed by ITU and ISO, is being adopted by an increasing number of applications and platforms such as YouTube, Netflix, video conferencing, live broadcasting, etc. One of the major application scenarios is live broadcasting and real-time streaming over wireless networks, where network adaptability is a major challenge due to the instability/fluctuation of network bandwidth. Rate control has always been a main research area in live video streaming over wireless networks. While rate control has been extensively studied for previous video coding standards, such as H.263 and H.264/AVC, insufficient research has been done for H.265/HEVC. Also, due to the new features, tools, data structures, and algorithms introduced in H.265/HEVC to improve its coding efficiency, the algorithmic and computational complexities of its rate control schemes are greater than all its predecessors. The increasing complexities have hindered the adoption of H.265/HEVC in its real-time streaming over mobile wireless networks, such as 4G networks and the forthcoming 5G networks. In this research, the rate control algorithms/methodologies for H.265/HEVC and the corresponding mathematical modeling of each of its components will be investigated. Our goal is to develop low-complexity and highly-efficient rate control schemes for H.265/HEVC to improve its network adaptability and enable its applications to various mobile wireless streaming scenarios. The proposed rate control framework of H.265/HEVC encoder has three major components: precise target rate estimation, accurate bitrate allocation based on textural/motion complexities, and improved rate distortion optimization (RDO). In this paper, we also discuss a number of key research problems and challenges under this framework.
Original language | English |
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Title of host publication | MOBIMEDIA 2017 - 10th EAI International Conference on Mobile Multimedia Communications |
Editors | Honggang Wang, Qianbin Chen, Yanbing Liu, Dapeng Wu, Nirwan Ansari, Lei Chen, Dalei Wu |
Publisher | ICST |
Pages | 192-198 |
Number of pages | 7 |
ISBN (Print) | 9781631901560 |
DOIs | |
State | Published - 2017 |
Event | EAI International Conference on Mobile Multimedia Communications - Chongqing, China Duration: Jul 13 2017 → Jul 14 2017 Conference number: 10 https://eudl.eu/proceedings/mobimedia/2017 |
Publication series
Name | International Conference on Mobile Multimedia Communications (MobiMedia) |
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Volume | 2017-July |
ISSN (Electronic) | 2413-094X |
Conference
Conference | EAI International Conference on Mobile Multimedia Communications |
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Abbreviated title | EAI MOBIMEDIA |
Country/Territory | China |
City | Chongqing |
Period | 07/13/17 → 07/14/17 |
Internet address |
Scopus Subject Areas
- Computer Networks and Communications
- Computer Science Applications
- Emergency Medicine
- Media Technology
- Modeling and Simulation