An HTTP/2 push-based approach for SVC adaptive streaming

Hooft, Jeroen van der; Petrangeli, Stefano; Bouten, Niels; Wauters, Tim; Huysegems, Rafael; Bostoen, Tom; Turck, Filip De

doi:10.1109/noms.2016.7502802

Cited by 9 publications

(11 citation statements)

References 23 publications

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“…However, it is not clear what was the network characteristic that the experiments were based on. In [25], the authors studied the live streaming QoE in terms of initial startup delay, buffering and quality switches. The emulation was carried out using measured LTE throughput in Belgium and included an artificial delay of up to 400ms.…”

Section: Qoe Improvement Techniques Of Http Live Streamingmentioning

confidence: 99%

QoE-Assured 4K HTTP Live Streaming via Transient Segment Holding at Mobile Edge

Wang

Chai

et al. 2018

IEEE J. Select. Areas Commun.

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Abstract-HTTP-based live streaming has become increasingly popular in recent years, and more users have started generating 4K live streams from their devices (e.g., mobile phones) through social-media service providers like Facebook or YouTube. If the audience is located far from a live stream source across the global Internet, TCP throughput becomes substantially suboptimal due to slow-start and congestion control mechanisms. This is especially the case when the end-to-end content delivery path involves radio access network (RAN) at the last mile. As a result, the data rate perceived by a mobile receiver may not meet the high requirement of 4K video streams, which causes deteriorated Quality-of-Experience (QoE). In this paper, we propose a scheme named Edge-based Transient Holding of Live sEgment (ETHLE), which addresses the issue above by performing context-aware transient holding of video segments at the mobile edge with virtualized content caching capability. Through holding the minimum number of live video segments at the mobile edge cache in a context-aware manner, the ETHLE scheme is able to achieve seamless 4K live streaming experiences across the global Internet by eliminating buffering and substantially reducing initial startup delay and live stream latency. It has been deployed as a virtual network function at an LTE-A network, and its performance has been evaluated using real live stream sources that are distributed around the world. The significance of this paper is that by leveraging virtualized caching resources at the mobile edge, we address the conventional transport-layer bottleneck and enable QoE-assured Internet-wide live streaming services with high data rate requirements.Index Terms-HTTP live streaming, mobile edge computing, network function virtualization, quality of experience, video caching

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Section: Qoe Improvement Techniques Of Http Live Streamingmentioning

confidence: 99%

QoE-Assured 4K HTTP Live Streaming via Transient Segment Holding at Mobile Edge

Wang

Chai

et al. 2018

IEEE J. Select. Areas Commun.

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“…A first evaluation showed promising results, such as a lower startup time and endto-end delay in high-RTT networks. In other work, we showed that the occurrence of playout freezes can be reduced through SVC-based streaming over HTTP/2, limiting the quality loss in high-RTT networks by pushing base layer segments to the client [37]. Although results are promising, the average quality is lower than for AVC-based HAS, and only a limited amount of quality layers can be used because of SVC's encoding overhead.…”

Section: Http/2 For Multimedia Deliverymentioning

confidence: 93%

An HTTP/2 Push-Based Approach for Low-Latency Live Streaming with Super-Short Segments

et al. 2017

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Over the last years, streaming of multimedia content has become more prominent than ever. To meet increasing user requirements, the concept of HTTP Adaptive Streaming (HAS) has recently been introduced. In HAS, video content is temporally divided into multiple segments, each encoded at several quality levels. A rate adaptation heuristic selects the quality level for every segment, allowing the client to take into account the observed available bandwidth and the buffer filling level when deciding the most appropriate quality level for every new video segment. Despite the ability of HAS to deal with changing network conditions, a low average quality and a large camera-to-display delay are often observed in live streaming scenarios. In the meantime, the HTTP/2 protocol was standardized in February 2015, providing new features which target a reduction of the page loading time in web browsing. In this paper, we propose a novel push-based approach for HAS, in which HTTP/2's push feature is used to actively push segments from server to client. Using this approach with video segments with a sub-second duration, referred to as super-short segments, it is possible to reduce the startup time and end-to-end delay in HAS live streaming. Evaluation of the proposed approach, through emulation of a multi-client scenario with highly variable bandwidth and latency, shows that the startup time can be reduced with 31.2% compared to traditional solutions over HTTP/1.1 in mobile, high-latency networks. Furthermore, the end-to-end delay in live streaming scenarios can be reduced with 4 s, while providing the content at similar video quality.

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“…Huysegems et al presented ten novel HTTP/2-based methods to improve the QoE of HAS [16]. Recently, van der Hooft et al introduced an HTTP/2 push-based approach for Scalable Video Coding (SVC) adaptive streaming where only the base layer of the SVC-encoded video is pushed from server to client [17]. This solution allows to eliminate one RTT cycle for every video segment, which has a significant impact on the user's QoE.…”

Section: Has Over Http/2mentioning

confidence: 99%

A Web-based framework for fast synchronization of live video players

Pauwels

Hooft

Petrangeli

et al. 2017

2017 IFIP/IEEE Symposium on Integrated Network and Service Management (IM)

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Abstract-The increased popularity of social media and mobile devices has radically changed the way people consume multimedia content online. As an example, users can experience the same event (e.g. a sports event or a concert) together using social media, even if they are not in the same physical location. Moreover, the introduction of the HTTP Adaptive Streaming principle has made it possible to deliver video over the best-effort Internet with consistent quality, even for mobile devices. One of the challenges within this context is the synchronization of multimedia playback among geographically distributed clients. To solve this issue, we propose a Web-based framework which allows to synchronize the playback of different clients. We also present a novel hybrid approach for adaptive streaming to allow fast synchronization among different clients, which relies on HTTP/2's server push feature in combination with sub-second video segments.In this paper, we detail the proposed framework and provide a comprehensive analysis of its performance. Experiments show that the novel hybrid approach can reduce synchronization time with 19.4% compared to standard adaptive streaming over HTTP/1.1 when bandwidth is limited to 2.5 Mb/s and an RTT of 150 ms. The gain increases even more when a higher throughput is available. The obtained results entail that the proposed framework can provide quality of experience for all users watching online video together.

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An HTTP/2 push-based approach for SVC adaptive streaming

Cited by 9 publications

References 23 publications

QoE-Assured 4K HTTP Live Streaming via Transient Segment Holding at Mobile Edge

QoE-Assured 4K HTTP Live Streaming via Transient Segment Holding at Mobile Edge

An HTTP/2 Push-Based Approach for Low-Latency Live Streaming with Super-Short Segments

A Web-based framework for fast synchronization of live video players

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