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Multimedia Data Generation Algorithm for Multi-user Video Conferencing System over Ad-hoc Networks
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- Authors
- Seon-Tae Kim, Ji-Young Kwak, Misun Yu, Seung-Jin Baek, Sung-Jea Ko
- Issue Date
- 2012-06
- Citation
- International Symposium on Consumer Electronics (ISCE) 2012, pp.1-3
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, a multimedia data generation algorithm for multi-user video conferencing system over ad-hoc networks is proposed. In the proposed method, the scene-changed frame is estimated using the number of bits pre-encoded by the hardware accelerator and the percentage of the intra-coded macroblocks in each frame. The resulting scene-changed frames are re-encoded as the intra-coded frames and then transmitted to the receiver. Compared to the bit-stream generated from encoding the entire sequence, the proposed algorithm achieves up to about 50% reduction of the bit-rate without skipping the key frames while maintaining the perceptual video quality. © 2012 IEEE.
- KSP Keywords
- Ad Hoc Networks, Bit Rate, Data generation, Generation algorithm, Hardware accelerator, Key frame, Multi-user video conferencing, Multimedia data, Video conferencing system, bit stream, perceptual video quality