Program popularity and viewer behaviour in a large TV-on-demand system

Abrahamsson, Henrik; Nordmark, Mattias

doi:10.1145/2398776.2398798

Cited by 51 publications

(56 citation statements)

References 26 publications

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“…The live dataset consists of around 4.5 million users and 16 million video viewing sessions covering around 10,000 different events. As in several prior studies on content popularity [30,12], we also observe a heavy tailed Zipf distribution for overall popularity of objects for both VOD and live. Whereas most objects have few accesses over the two months, some extremely popular objects had significant viewership.…”

Section: Datasetsupporting

confidence: 82%

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Analyzing the potential benefits of CDN augmentation strategies for internet video workloads

Balachandran

Sekar

Akella

et al. 2013

Proceedings of the 2013 Conference on Internet Measurement Conference

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Video viewership over the Internet is rising rapidly, and market predictions suggest that video will comprise over 90% of Internet traffic in the next few years. At the same time, there have been signs that the Content Delivery Network (CDN) infrastructure is being stressed by ever-increasing amounts of video traffic. To meet these growing demands, the CDN infrastructure must be designed, provisioned and managed appropriately. Federated telco-CDNs and hybrid P2P-CDNs are two content delivery infrastructure designs that have gained significant industry attention recently. We observed several user access patterns that have important implications to these two designs in our unique dataset consisting of 30 million video sessions spanning around two months of video viewership from two large Internet video providers. These include partial interest in content, regional interests, temporal shift in peak load and patterns in evolution of interest. We analyze the impact of our findings on these two designs by performing a large scale measurement study. Surprisingly, we find significant amount of synchronous viewing behavior for Video On Demand (VOD) content, which makes hybrid P2P-CDN approach feasible for VOD and suggest new strategies for CDNs to reduce their infrastructure costs. We also find that federation can significantly reduce telco-CDN provisioning costs by as much as 95%.

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Section: Datasetsupporting

confidence: 82%

“…There have been studies to understand content popularity in user-generated content systems (e.g., [18,25]), IPTV systems (e.g., [13,34,12]), and other VOD systems (e.g., [27,30,21]). The focus of these studies was on understanding content popularity to enable efficient content caching and prefetching.…”

Section: Content Popularitymentioning

confidence: 99%

Analyzing the potential benefits of CDN augmentation strategies for internet video workloads

Balachandran

Sekar

Akella

et al. 2013

Proceedings of the 2013 Conference on Internet Measurement Conference

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“…We use the cacheability definition proposed by Ager et al [2] and used in other works [1,16], where k i denotes the total number of requests for video i, and n is the number of unique videos requested:…”

Section: Resultsmentioning

confidence: 99%

Cacheability of YouTube videos in cellular networks

Abdesslem¹,

Lindgren²

2014

Proceedings of the 4th Workshop on All Things Cellular: Operations, Applications, &Amp; Challenges

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Video traffic now represents a growing proportion of the traffic on cellular networks, causing capacity problems for operators and increased delays for users. Studies have shown that deploying caches at the network level reduces the delay for the end-user and the overall traffic volume for the telecom operator. In this paper, we analyse a large nation-wide dataset of real-life video requests sent by mobile users to a popular video streaming website. This analysis is the first to rely on such a large dataset, and sheds light on the optimal cacheability of video content with caches distributed in the cellular network, and how efficient some existing cache replacement algorithms are at reducing the number of requests sent to the video provider. We show that depending on the cache size and algorithm parameters, up to 20.33% of the requests can be served by a local cache.

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“…[2] Those video archives represent a vital component of the world's heritage and when combined with novel computing technologies have contributed to conceive new services around television and video platforms, such as Interactive TV [3] and Internet Television. [4][5][6] Specifically, when the Internet environment is considered, some challenging aspects must be faced with respect to procedures to highlight and share program-related materials, as well as the inclusion of user-generated content.…”

Section: Introductionmentioning

confidence: 99%

A unified approach to content-based indexing and retrieval of digital videos from television archives

Souza¹,

Pádua

Nunes³

et al. 2014

AIR

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This work addresses the development of a unified approach to content-based indexing and retrieval of digital videos from television archives. The proposed approach has been designed to deal with arbitrary television genres, making it suitable for various applications. To achieve this goal, the main steps of a content-based video retrieval system are addressed in this work, namely: video segmentation, key-frame extraction, content-based video indexing and the video retrieval operation itself. Video segmentation is addressed as a typical TV broadcast structuring problem, which consists in automatically determining the boundaries of each broadcasted program (like movies, news, among others) and inter-program (for instance, commercials). Specifically, to segment the videos, Electronic Program Guide (EPG) metadata is combined with the detection of two special cues, namely, audio cuts (silence) and dark monochrome frames. On the other hand, a color histogram-based approach performs key-frame extraction. Video indexing and retrieval are accomplished by using hashing and k-d tree methods, while visual signatures containing color, shape and texture information are estimated for the key-frames, by using image and frequency domain techniques. Experimental results with the dataset of a multimedia information system especially developed for managing television broadcast archives demonstrate that our approach works efficiently, retrieving videos in 0.16 seconds on average and achieving recall, precision and F1 measure values, as high as 0.76, 0.97 and 0.86 respectively.

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Program popularity and viewer behaviour in a large TV-on-demand system

Cited by 51 publications

References 26 publications

Analyzing the potential benefits of CDN augmentation strategies for internet video workloads

Analyzing the potential benefits of CDN augmentation strategies for internet video workloads

Cacheability of YouTube videos in cellular networks

A unified approach to content-based indexing and retrieval of digital videos from television archives

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