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In the modern world, communication between people is being more important than ever, people are seeking for a more vivid, real-time way of communication. WebRTC (Web Real-Time Communication) is an upcoming technology that enables real-time communications capabilities in audio, video and data transmission via web browsers through Javascript APIs (Application Programming Interfaces). In this paper,...
It has been shown that there exist significant computational resources in user equipment deployed in enterprises, which are under-utilized most of the time. A new architecture was proposed in order to use these resources as media servers, in order to handle tasks such as video mixing, trans-coding, etc. This represents an economical and efficient alternative to MCU-based or P2P architectures. However,...
This paper proposes a simultaneous transmission method of Multi-View Video and Audio (MVV-A) with MPEG-DASH. In the MPEG-DASH protocol, the server stores multi-bitrate encoded videos in advance and transmits an appropriate video depending on network condition. In the simultaneous transmission method, the minimum bitrate videos of unselected viewpoints are transmitted with the video of the selected...
Streaming Media is a multimedia that is presented to an end user which is constantly received by while being delivered by a provider. Amazon Web Service (AWS) is a collection of remote computing services (also called web services) that together make up a Cloud computing platform, offered over the Internet by Amazon.com. The most central and well-known of these services are Amazon EC2 and Amazon S3...
Video streaming now amounts to the majority of traffic in the Internet. Media streaming relies on large-scale content distribution networks (CDNs), that incur significant costs to build or use. P2P distribution of video content reduce reliance on CDNs and costs. Unfortunately, P2P distribution is fraught with QoE problems, specially during flash crowds or in scenarios where users have limited bandwidth...
The Dynamic Adaptive Streaming over HTTP (DASH) is specified to cope with the changing network conditions and provide an adaptive bit-rate HTTP-based streaming solution. While there have been many researches of rate adaptation algorithms on adaptive HTTP streaming, much of the work is focused on Video on Demand (VoD) service — which is not same as live streaming. It is generally preferred to minimize...
Wireless video surveillance is an important option suitable when it is difficult to have cable Internet and electricity infrastructure, which is the case, for example, for construction yards or vehicles. We present iCam, an open-source Internet-enabled video surveillance project, in which we use mainly discarded camera phones. The mobile application is written mainly in Python on most phone platforms,...
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...
Web Real-Time Communication or Realtime communication in the Web (WebRTC/RTCWeb) is a prolific new standard and technology stack, providing full audio/video agnostic communications for the Web. Service providers implementing such technology deal with various levels of complexity ranging anywhere from: high service distribution, multi-client integration, P2P and Cloud assisted communication backends,...
In extremely connected and dynamic environments, such as data centers, SDN network devices can be exploited to simplify the management of network provisioning. However, they leverage on TCAMs to implement the flow tables, i.e., on size-limited memories that can be quickly filled up when fine-grained traffic control is required, eventually preventing the installation of new forwarding rules. In this...
This paper presents a novel MPEG media transport (MMT) system based Desktop-as-a-Service (DaaS) system. Compared with the legacy virtual desktop infrastructure (VDI) based DaaS systems which consider the screen as a combination of various elements (such as text, images, icons etc.) and maintain multiple data channels for communication, the new system treats the desktop screen rendering as a video...
To enhance video streaming experience for mobile users, we propose an approach towards Quality-of-Experience (QoE) aware on-the-fly transcoding. The proposed approach relies on the concept of Mobile Edge Computing (MEC) as a key enabler in enhancing service quality. Our scheme involves an autonomic creation of a transcoding service as a Virtual Network Function (VNF) and ensures dynamic rate switching...
MPEG DASH enables OTT delivery of media content to almost any device. From a commercial point of view, dynamic ad insertion plays a crucial role. For broadcasters, content owners and advertisers new opportunities open up as advertisement can be personalized and delivered to any device. We show different approaches for selecting personalized advertisements via ad decision servers. Moreover, we evaluate...
HTTP Adaptive Streaming (HAS) has become increasingly more popular. However, the research about HTTP adaptive streaming for multi-server environments is limited. Compared with traditional single-server environments, HAS for multi-server environments is able to offer expanded bandwidth, link diversity, and reliability. However, it is a challenging issue to support the seamless playback in multi-server...
With the proliferation of hand-held devices in recent years, wireless video streaming has become an extremely popular application. Internet video streaming to mobile devices, however, faces several challenges, such as unstable connections, long latency, and high jitter. Bitrate adaptive streaming and video transcoding are widely used to overcome such problems. However, there are still several shortcomings...
Multimedia application on mobile phone platform is a hot topic in Information Technology industry accompanying with the advances of technologies in Internet, smart operating system and wireless network. The development of streaming media technology boosts the audio and video application over the Internet. This paper describes a mobile video live streaming system with Wi-Fi/4G mobile phone to capture...
In this paper, we consider combinations of transmission schemes for each media in MVV-A (Multi-View Video and Audio) IP transmission when the total bitrate of transmitted audiovisual streams is regulated. We employ two types of transmission schemes: single stream transmission and all streams simultaneous transmission. We assess QoE of the four combinations of the transmission schemes by a subjective...
In information age, carrying out network education is the most effective way for universal education and lifelong education. On a macro level, the status of network education development greatly reflects the development level of modern education of a country or a region. This paper introduces the design and implementation of a WebRTC based online video teaching system on android OS. This teaching...
Buffering mechanisms play a vital role in leveraging the capacity and efficiency of live streaming as well as P2P streaming system. An appropriate buffering mechanism allows the peer to undergo a smooth playback by compensating the delay introduced by the network as well as storing pieces to be played in the near future. A circular buffer is used most of the time in a live P2P streaming system as...
As the main goal of network media service transmission, to meet and enhance the quality of experience (QoE) for users, and optimize transmission control mechanism. High-definition (HD) streaming media technology demands larger bandwidth. While QoE evaluation needs to consider multiple paths network transmission quality of service (QoS), path payload distribution, service features and other attributes...
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