Rate-Distortion Optimized SVC Bitstream Extraction for Heterogeneous Devices: A Preliminary Investigation

Peng, Wen-Hsiao; Huang, Lin-Shung; Zao, John K.; Lu, Jiun-Shien; Wang, Tse-Wei; Huang, Hsueh-Ting; Kuo, Lun-Chia

doi:10.1109/ismw.2007.4476003

Cited by 2 publications

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“…A rate-distortion optimization bitstream extraction method is proposed in [3], it defined the optimal extraction route and search strategic. An intermediate video description termed Intermedia is proposed in [4], and it is used to handle multiple video applications, e.g., bit-rate conversion, temporal resolution reduction, video summarization browsing.…”

Section: Introductionmentioning

confidence: 99%

A video adaptation framework for SVC based on content description

Liu

Liang

Tan³

et al. 2011

2011 International Conference on Multimedia Technology

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Due to today's diverse resource constraints and user preferences, video adaptation attracts more and more research interests. A video adaptation framework for scalable video coding(SVC) is proposed in this paper. The content description is acquired off-line, and then a bitstream syntax description is automatic created by a format-specific parser. Finally, video adaptation is implemented based on bitstream analysis and video content description. Experiments show that the proposed framework can acquire output video stream quickly and assure visual quality without loss of coding efficiency.

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Section: Introductionmentioning

confidence: 99%

A video adaptation framework for SVC based on content description

Liu

Liang

Tan³

et al. 2011

2011 International Conference on Multimedia Technology

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“…In [10], a set of "adaptation rules" for the SVC encoder has been proposed and an extraction algorithm is developed based on local optimization of rate distortion ratios. Both these methods result in a coarse adaptation scheme with a very limited number of switching points, as they do not leverage the MGS capability in SVC.…”

Section: Introductionmentioning

confidence: 99%

N-Way Video Communication over Enterprise Networks Based on Adaptive Bit Stream Extraction in Scalable Video Coding

Palaniappan

Jayant

2010

2010 Fourth Pacific-Rim Symposium on Image and Video Technology

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In this paper, we explore real time N-way video communication over enterprise networks based on scalable video coding, SVC (Scalable extension of H.264/AVC). We present a bit stream extraction strategy based on GOP size prediction and perceptual importance of temporal and quality enhancements, and validate the strategy through initial subjective testing. We also compare it with extraction based on average bit rate of each constituent layer of the bitstream. Our extraction is adaptive with respect to variations in available bandwidth and is proxy driven, in that the decision process and the adaptation are preformed at proxy servers located at the edges of the backbone network. The main goals are to 1)maximize the user perceived quality even during deteriorating channel conditions, 2) maximize the reaction speed to changes in available bandwidth and 3) minimize the extraction delay. We report objective and subjective results for the N=2 case, with HD video clips encoded at 600 -900 kbps. With a channel utilization of 92.7%, our extraction algorithm based on GOP size prediction shows an average increase in PSNR of about 2.2 dB over the extraction based on average bit rate. Initial subjective tests also prove that our layer extraction strategy is perceptually more efficient than other extraction schemes.

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Rate-Distortion Optimized SVC Bitstream Extraction for Heterogeneous Devices: A Preliminary Investigation

Cited by 2 publications

References 0 publications

A video adaptation framework for SVC based on content description

A video adaptation framework for SVC based on content description

N-Way Video Communication over Enterprise Networks Based on Adaptive Bit Stream Extraction in Scalable Video Coding

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