New architecture for MPEG video streaming system with backward playback support

2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Efficient reverse-play algorithms for MPEG video with VCR support

Centre for Multimedia Signal Processing, Department of Electronic and Information Engineering2005-2006 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Reverse-play algorithm for MPEG video streaming

2004-2005 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Redundancy reduction technique for dual-bitstream MPEG video streaming with VCR functionalities

2008-2009 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Efficient reverse-play algorithm for MPEG video streaming with VCR functionality

Centre for Multimedia Signal Processing, Department of Electronic and Information EngineeringRefereed conference paper2003-2004 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Macroblock-based reverse play algorithm for MPEG video streaming

2003-2004 > Academic research: refereed > Refereed conference paperpublished_fina

Flexi-WVSNP-DASH: A Wireless Video Sensor Network Platform for the Internet of Things

abstract: Video capture, storage, and distribution in wireless video sensor networks (WVSNs) critically depends on the resources of the nodes forming the sensor networks. In the era of big data, Internet of Things (IoT), and distributed demand and solutions, there is a need for multi-dimensional data to be part of the Sensor Network data that is easily accessible and consumable by humanity as well as machinery. Images and video are expected to become as ubiquitous as is the scalar data in traditional sensor networks. The inception of video-streaming over the Internet, heralded a relentless research for effective ways of distributing video in a scalable and cost effective way. There has been novel implementation attempts across several network layers. Due to the inherent complications of backward compatibility and need for standardization across network layers, there has been a refocused attention to address most of the video distribution over the application layer. As a result, a few video streaming solutions over the Hypertext Transfer Protocol (HTTP) have been proposed. Most notable are Apple’s HTTP Live Streaming (HLS) and the Motion Picture Experts Groups Dynamic Adaptive Streaming over HTTP (MPEG-DASH). These frameworks, do not address the typical and future WVSN use cases. A highly flexible Wireless Video Sensor Network Platform and compatible DASH (WVSNP-DASH) are introduced. The platform's goal is to usher video as a data element that can be integrated into traditional and non-Internet networks. A low cost, scalable node is built from the ground up to be fully compatible with the Internet of Things Machine to Machine (M2M) concept, as well as the ability to be easily re-targeted to new applications in a short time. Flexi-WVSNP design includes a multi-radio node, a middle-ware for sensor operation and communication, a cross platform client facing data retriever/player framework, scalable security as well as a cohesive but decoupled hardware and software design.Dissertation/ThesisDoctoral Dissertation Electrical Engineering 201

System analysis of a Peer-to-Peer Video-on-Demand architecture : Kangaroo

Architectural design and deployment of Peer-to-Peer Video-on-Demand (P2PVoD) systems which support VCR functionalities is attracting the interest of an increasing number of research groups within the scientific community; especially due to the intrinsic characteristics of such systems and the benefits that peers could provide at reducing the server load. This work focuses on the performance analysis of a P2P-VoD system considering user behaviors obtained from real traces together with other synthetic user patterns. The experiments performed show that it is feasible to achieve a performance close to the best possible. Future work will consider monitoring the physical characteristics of the network in order to improve the design of different aspects of a VoD system.El disseny arquitectònic i el desplegament de sistemes de Vídeo sota Demanda "Peer-to-Peer" que soporten funcionalitats VCR està captant l'interès d'un nombre creixent de grups de recerca a la comunitat científica, degut especialment a les característiques intrínsiques dels mencionats sistemes i als beneficis que els peers podrien proporcionar a la reducció de la càrrega en el servidor. Aquest treball tracta l'anàlisi del rendiment d'un sistema P2P-VoD considerant el comportament d'usuaris obtingut amb traçes reals i amb patrons sintètics. Els experiments realitzats mostren que és viable assolir un rendiment proper al cas més óptim. Com treball futur es considerarà la monitorització de les característiques físiques de la xarxa per a poder millorar el disseny dels diferents aspectes que formen un sistema de VoD.El diseño arquitectónico y el despliegue de sistemas de Video bajo Demanda "Peer-to-Peer" que soportan funcionalidades VCR está captando el interés de un número creciente de grupos de investigación dentro de la comunidad científica; especialmente debido a las características intrínsecas de tales sistemas y a los beneficios que los peers podrían proporcionar en la reducción de la carga en el servidor. Este trabajo se enfoca en el análisis de rendimiento de un sistema P2PVoD considerando el comportamiento de usuarios obtenido de trazas reales, junto a otros patrones sintéticos. Los experimentos realizados muestran que es viable lograr un rendimiento cercano al caso más óptimo. El trabajo futuro considerará la monitorización de las características físicas de la red para poder mejorar el diseño de los diferentes aspectos que conforman un sistema de VoD

Intelligent Prefetching and Buffering for Interactive Streaming of MPEG Videos

Continuous delivery of media streams like video over IP networks so far is mainly handled by commercial approaches that deliver the stream forward-oriented in their own proprietary format. Though some existing streaming technologies are able to adapt to varying bandwidths, they do not provide smooth reactions to user interactions with the continuous stream. We have developed the MPEG-L/MRP strategy, an adaptive prefetching algorithm for the MPEG-1 video format in combination with an intelligent buffering technique that allows for smooth and quick reactions to user interactions with the stream. With L/MRP [12] an approach already has been presented to deliver and buffer homogeneous continuous data streams like Motion-JPEG with special focus on fast reaction to user interactions. In contrast, the MPEG-1 encoding with its different frame types and the dependencies between frames opens the door to a more �ne-grained adaptation of the continous stream. However, the complexity of MPEG-1 calls for comprehensive adaptation and special amendments of the L/MRP algorithm to make it an eÆcient preloading and buffering technique for MPEG-1 videos. With the realization of MPEG-L/MRP in the context of a multimedia presentation engine on top of a multimedia repository we have an efficient means to deliver continuous streams of interactive multimedia presentations over existing IP infrastructure trying to minimize interaction response time and optimize loading/reloading portions of a video stream