Abstract
Green computing and energy efficiency has become an important issue in today's rapidly growing multimedia transmission. Meanwhile users want high-quality content to be viewed anywhere, content producers must think alternatives for cutting expenses in the server. Usually multiple sub-streams from the original video feed are needed for clients with unique device characteristics, which can notably load the video encoding server leading also to increased energy consumption. Furthermore, social sharing applications using live video streaming can consume battery notably, which also drives developing energy-efficient video coding solutions. Therefore, it is essential to find ways for optimizing and selecting the proper tools for energy-efficient content production already in the server. In this paper, we evaluate the energy and power consumption for the existing top-rated open source video encoders in proportion to video quality and bit rate. The selected video coding formats include current dominant H.264 Advanced Video Coding (H.264/AVC), latest standard High Efficiency Video Coding (HEVC) and Google's royalty free VP9. The results show that the selected H.264 encoder (x264) has the lowest energy consumption, but the worst compression efficiency. On the contrast, x265 for HEVC has the best compression efficiency, but suffers from increased energy consumption. For our experiments, VP9 provides the best trade-off between compression efficiency and energy consumption.
| Original language | English |
|---|---|
| Title of host publication | Wireless and Mobile Computing, Networking and Communications (WiMob), 2016 IEEE 12th International Conference on |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| Pages | 1-7 |
| ISBN (Electronic) | 978-1-5090-0724-0 |
| ISBN (Print) | 978-1-5090-0725-7 |
| DOIs | |
| Publication status | Published - 5 Dec 2016 |
| MoE publication type | A4 Article in a conference publication |
| Event | IEEE 12th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2016 - New York, United States Duration: 17 Oct 2016 → 19 Oct 2016 Conference number: 12 |
Conference
| Conference | IEEE 12th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2016 |
|---|---|
| Abbreviated title | WiMob 2016 |
| Country/Territory | United States |
| City | New York |
| Period | 17/10/16 → 19/10/16 |
Keywords
- video encoding
- energy consumption
- power consumption
- H.264
- HEVC
- VP9
