An interoperable streaming framework for scalable video coding based on MPEG-21

Eberhard, Michael; Celetto, Luca; Timmerer, Christian; Quacchio, E.; Hellwagner, Hermann; Rovati, F.

doi:10.1049/cp:20080407

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…Dropping NALUs of a lower layer may make corresponding higher layer NALUs useless because of missing decoding dependencies. Many SVC adaptation solutions have been proposed [7], [8], [9], [10], [11]. These are either implemented at the remote video server, or deployed within the network (e.g.…”

Section: Introductionmentioning

confidence: 99%

Cross-layer H.264 scalable video downstream delivery over WLANs

Bianchi

Detti

Loreti

et al. 2010

2010 IEEE International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM)

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Abstract-Thanks to its in-network drop-based adaptation capabilities, H.264 Scalable Video Coding is perceived as an effective approach for delivering video over networks characterized by sudden large bandwidth fluctuations, such as Wireless LANs. Performance may be boosted by the adoption of application-aware/cross-layer schedulers devised to intelligently drop video data units (NALUs), so that i) decoding dependencies are preserved, and ii) the quality perceived by the end users is maximized. In this paper, we provide a theoretical formulation of a QoE utility-optimal cross-layer scheduling problem for H.264 SVC downlink delivery over WLANs. We show that, because of the unique characteristics of the WLAN MAC operation, this problem significantly differs from related approaches proposed for scheduled wireless technologies, especially when the WLAN carries background traffic in the uplink direction. From these theoretical insights, we derive, design, implement and experimentally assess a simple practical scheduling algorithm, whose performance is very close to the optimal solution.

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Section: Introductionmentioning

confidence: 99%

Cross-layer H.264 scalable video downstream delivery over WLANs

Bianchi

Detti

Loreti

et al. 2010

2010 IEEE International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM)

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“…Another proxy prototype has been presented in [13], where MPEG-21 Digital Item Adaptation is used. An SVC server is developed in [14] as part of an optimized MPEG-21 framework for an heterogeneous network scenario.…”

Section: Introductionmentioning

confidence: 99%

Application-aware H.264 Scalable Video Coding delivery over Wireless LAN: Experimental assessment

Bianchi

Detti

Loreti

et al. 2009

2009 Second International Workshop on Cross Layer Design

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This paper is among the first works to document experimental results for application-aware H.264 Scalable Video Coding (SVC) support over Wireless LANs. Application-aware support is achieved by introducing a bandwidth throttling device, called Virtual BottleNeck (VBN), before the WLAN Access Point.Throttling is set to a bandwidth slightly smaller than the actual WLAN capacity (either known or estimated), so that all packet/frame losses occur inside the VBN. Here, loss events are controlled by a scheduling mechanism devised to operate with information taken from the H.264 Network Abstraction Layer Units (NALUs). Despite its relative simplicity, the implemented scheduler exhibits effective video adaptation performance and close to optimal bandwidth efficiency. Setting up the trial was not trivial due to the lack of suitable publicly available tools. We filled this gap by implementing and integrating several separate software modules, e.g., streaming server, NALU dependency filtering, video frame concealment, etc. As a final result, the experimental trial supports the full delivery chain for an SVC stream with the only limitation of an off-line stream conversion for play-out and Peak Signal-to-Noise Ratio (PSNR) measurement purposes, due to the unavailability of real time SVC players.

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Modeling and Evaluation of a Metadata-Based Adaptive P2P Video-Streaming System

Iqbal

Shirmohammadi

Hariri

2012

The Computer Journal

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In this paper we present a multi-parent adaptive video streaming system (MAVSS). MAVSS is a cooperative video streaming system, based on the Peer-to-Peer (P2P) content distribution concept, to simultaneously adapt and stream video contents to heterogeneous users. In order to ensure video codec independence, we emphasize on structured metadata-based adaptation. Therefore, MPEG-21 generic Bitstream Syntax Description (gBSD) is selected to describe the parts of the video contents selected for adaptation operations. Additionally, without an optimal solution, it is hard to judge the efficiency of such systems. Therefore, in this paper, we first present the fundamental properties of a multi-parent adaptive video streaming system. We then present a mathematical model of the adaptive streaming system, where we define efficient streaming as an optimization of a cost function that can be solved as an Integer Linear Programming problem. The model illustrates the relation among all the parameters that affect the resource contribution, resource utilization, load balancing, and service fairness. We use this model to analyze the trade-offs that exist between service fairness and system efficiency.

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An interoperable streaming framework for scalable video coding based on MPEG-21

Cited by 9 publications

References 5 publications

Cross-layer H.264 scalable video downstream delivery over WLANs

Cross-layer H.264 scalable video downstream delivery over WLANs

Application-aware H.264 Scalable Video Coding delivery over Wireless LAN: Experimental assessment

Modeling and Evaluation of a Metadata-Based Adaptive P2P Video-Streaming System

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