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...propose an SVC (layered-multicast) tunnel, inspired by IPv6 over IPv4 tunnels. That is, within the CAN only scalable media resources – such as SVC – are delivered adopting a layeredmulticast approach =-=[9]-=-. This allows the adaptation of scalable media resources by MANEs [10], implementing the concept of distributed adaptation [11], [12]. At the border to the user (Home-Box), adaptation modules are depl...

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...effectively entering the era of Universal Multimedia Experience (UME) [2]. An important aspect towards UMA and UME is the adoption of scalable media coding formats such as Scalable Video Coding (SVC) =-=[3]-=- enabling edge and in-network adaptation. This paper proposes the exploitation of these scalable media formats within the (core) network – with in-network adaptation enabled – in order to optimize the...

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...ds-distributed adaptation decision-taking, SVC tunneling, research challenges, in-network adaptation, contentaware networking I. INTRODUCTION & PROBLEM STATEMENT The Universal Multimedia Access (UMA) =-=[1]-=- is omnipresent thanks to the evolution of device and network infrastructure technologies and we are now effectively entering the era of Universal Multimedia Experience (UME) [2]. An important aspect ...

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...ltimedia Access (UMA) [1] is omnipresent thanks to the evolution of device and network infrastructure technologies and we are now effectively entering the era of Universal Multimedia Experience (UME) =-=[2]-=-. An important aspect towards UMA and UME is the adoption of scalable media coding formats such as Scalable Video Coding (SVC) [3] enabling edge and in-network adaptation. This paper proposes the expl...

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...ources – such as SVC – are delivered adopting a layeredmulticast approach [9]. This allows the adaptation of scalable media resources by MANEs [10], implementing the concept of distributed adaptation =-=[11]-=-, [12]. At the border to the user (Home-Box), adaptation modules are deployed enabling device-independent access to the SVC-encoded content by providing X-to-SVC and SVC-to-X transcoding/rewriting fun...

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... reduction of the load on the network (i.e., no duplicates), making it free for (other) data (e.g., more enhancement layers). First measurements of SVC-based adaptation in an off-theshelf WiFi router =-=[13]-=- have shown evidence to further pursue this kind of approach. More complex adaptation operations that are required to create scalable media resources, such as transcoding of media resources which have...

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... tunnels. That is, within the CAN only scalable media resources – such as SVC – are delivered adopting a layeredmulticast approach [9]. This allows the adaptation of scalable media resources by MANEs =-=[10]-=-, implementing the concept of distributed adaptation [11], [12]. At the border to the user (Home-Box), adaptation modules are deployed enabling device-independent access to the SVC-encoded content by ...

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...nsform coefficients allocates little quality to the lower layers (due to a uniform rate distribution among layers) compared to our configuration of the MainConcept encoder. The Bjontegaard Delta (BD) =-=[21]-=- results for the two transcoding steps are shown in Table 2. The BD is measured between the initial and final MPEG-2 encoding. As mentioned before, we applied a flexible approach for the target qualit...

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...ts) [4] developing a media ecosystem comprising – among others – Home-Box (HB) and Content-Aware Network (CAN) overlay networks. For an overview of the ALICANTE architecture the reader is referred to =-=[5]-=-. The heterogeneity of devices, platforms, and networks is and most likely will be a constant companion within (future) media (Internet) ecosystems. Thus, we need to provide tools to cope with that he...

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...ation to obtain an improved perceived video quality for end users. Finally, initial subjective quality assessments for an application that may benefit from ALICANTE’s media ecosystem are described in =-=[17]-=-. In the future it is anticipated to apply such subjective tests on the work conducted in [14], [15], and [16] respectively. Furthermore, we are currently working on combining [15] with the QoS-QoE ma...

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... – such as SVC – are delivered adopting a layeredmulticast approach [9]. This allows the adaptation of scalable media resources by MANEs [10], implementing the concept of distributed adaptation [11], =-=[12]-=-. At the border to the user (Home-Box), adaptation modules are deployed enabling device-independent access to the SVC-encoded content by providing X-to-SVC and SVC-to-X transcoding/rewriting functions...

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...mode, where the entire SVC stream is packed into a single RTP session. In order to perform adaptation, a MANE de-packetizes the RTP stream, analyzes the SVC header, and filters SVC layers accordingly =-=[14]-=-. The RTP re-packetization module updates the sequence number field of the RTP packet headers if needed. Alternatively, unicast streaming could also be realized via MST mode, using separate ports for ...

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...o quality analysis comprises objective methods and a QoS-QoE mapping model [14]. This mapping will be validated using subjective tests. This test-bed integrates our previous setups of [14], [15], and =-=[16]-=-. IV. SCIENTIFIC RESULTS ACHIEVED SO FAR… The research challenges and open issues including a description of use cases in question are further detailed in [14]. In this section we summarize scientific...

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... a satisfactory Quality of Experience (QoE). The work is conducted as part of the EU FP7 Integrated Project ALICANTE (Media Ecosystem Deployment Through Ubiquitous Content-Aware Network Environments) =-=[4]-=- developing a media ecosystem comprising – among others – Home-Box (HB) and Content-Aware Network (CAN) overlay networks. For an overview of the ALICANTE architecture the reader is referred to [5]. Th...