Movie Stream Research Articles

Software development for the simultaneous control of ten intelligent overview video cameras at W7-X

In the past few years a ten channel video diagnostics system was developed, built and installed for Wendestein 7-X stellarator (W7-X). The system is based on EDICAM (Event Detection and Intelligent Camera) CMOS cameras (400 fps @ 1.3 Mpixel). In the first W7-X experimental campaign (OP1.1) the video diagnostic system was not integrated into the central control and data acquisition system of W7-X, therefore the development of a user friendly interface was necessary to fulfill the following complex requirements: manage the configuration of all cameras (each with four independent region of interests), the measurement cycle and the real-time storage of the collected data to SSDs, and it has to provide a live video stream of all the ten cameras in the control room. The full bandwidth movie stream yields a data rate of approximately 1GB/s for a single camera, therefore downsampled data was used for the live view. The software also has to cope with the huge amount of data when W7-X will operate for up-to 30min. The software package is organized into two stand-alone pieces: VIDACS (Video Diagnostics Data Acquisition and Control Software) being the user interface and EDIDAQ (EDICAM Data Acquisition Software) controlling the individual EDICAMs. This paper will present the detailed design, implementation, testing and the first operation experiences of this software package.

Impact of Movie Streaming over Traditional DVD Movie Rental—An Empirical Study

Traditional movie DVD rental model has been challenged by a new business model of movie stream. Movie stream possesses convincing advantages over the traditional DVD rental. E-commerce shows a trend in the movie industry that consumers can stream comparable quality movies and TV shows directly from the Internet instead of waiting for the DVDs in the mail. Thanks to global technology advancement, movie stream has already prevailed. This study focuses on consumers’ preferences of decision making variables for streaming movie from the Internet and the traditional DVD movie rental. The results indicate that consumers are shifting from DVD movie rental to movie stream, while home entertainment industry needs to improve both in technology and customer service. The consumers favor movie streaming and make it better competing with other ways of watching movie. The quality of movie stream and renting DVD disks may be less important for movie viewers. Movie industry should make movie stream easy to watch.

Emergence of Movie Stream Challenges Traditional DVD Movie Rental—An Empirical Study with a User Focus

Traditional movie DVD rental model has been challenged by a new business model of movie stream. Movie stream possesses convincing advantages over the traditional DVD rental. E-commerce shows a trend in the movie industry that consumers can stream comparable quality movies and TV shows directly from the Internet instead of waiting for the DVDs in the mail. Thanks to global technology advancement, movie stream has already prevailed. This study focuses on consumers’ preferences of decision making variables for streaming movie from the Internet and the traditional DVD movie rental. The results indicate that consumers are shifting from DVD movie rental to movie stream, while home entertainment industry needs to improve both in technology and customer service. The consumers favor movie streaming and make it better competing with other ways of watching movie. The quality of movie stream and renting DVD disks may be less important for movie viewers. Movie industry should make movie stream easy to watch.

Online charging in IMS for multimedia services with negotiable QoS requirements based on service agreements

In this work, an online charging model is presented based on the IMS policy control and charging (PCC) framework, which takes into consideration user's agreements with the service provider (e.g., user loyalty programme, service subscription, etc.), with the possibility of providing online charging for services requiring a negotiable QoS in dynamically changing network conditions. The model aims to provide charging for services consisting of a number of media components, where the treatment of each media component within the charging system may differ based on the user's agreement with the service provider. For such services, the QoS negotiation process typically involves various stakeholders (user, network provider, service provider, etc.), and it results in a customised, user-specific combination of media components within the final service configuration. The existing IMS PCC architecture is not well-suited for charging services requiring a negotiable QoS. The proposed model builds upon and extends the online charging architecture specified in the IP multimedia subsystem (IMS) Release 8, and requires less signalling than the standard architecture. The proposed model is illustrated by using the imaginary adaptable movie stream service as a case study.

Mediating Frida: Negotiating Discourses of Latina/o Authenticity in Global Media Representations of Ethnic Identity

This article analyzes the discourses of Latina/o identity embedded in the movie Frida, the Latino news coverage about the film, and an on-line chat stream about the film. Comparing the identity discourses circulated by the movie's producers, Latina/o journalists, and Latina/o audiences when discussing the film shows how different communities negotiate the meanings of ethnic identity. The study concludes that the discourses of ethnic identity circulated through the movie, news coverage, and chat stream disrupt notions of Latina/o ethnic identity as a stable and commodifiable demographic category.

Synchronization-Sensitive Frame Estimation: Video Quality Enhancement

Network transmission is liable to errors and data loss. In movie transmission, packets of video frames are subject to loss or even explicit elimination for many reasons including congestion handling and the achievement of higher compression. Not only does the loss of video frames cause significant reduction in video quality, but it could also cause a loss of synchronization between the audio and video streams. If not corrected, this cumulative loss can seriously degrade the motion picture's quality beyond viewers' tolerance. In this paper, we study and classify the effect of audio-video de-synchronization. Afterwards, we develop and examine the performance and appropriateness of the application of many client-based techniques in the estimation of lost frames using the existing received frames, without the need for retransmissions or error control information. The estimated frames are injected at their appropriate locations in the movie stream to restore the loss. The objective is to enhance video quality by finding a very close estimate to the original frames at a suitable computation cost, and to contribute to the restoration of synchronization within the tolerance level of viewers.

Real-Time Communication Scheduling in a Multicomputer Video Server

In this paper, we address the problem of scheduling communication over the interconnection network of a distributed-memory multicomputer video server. We show that this problem is closely related to the problem of data distribution and movie scheduling in such a system. A solution is proposed in this paper that addresses these three issues at once. The movies are distributed evenly over all nodes of the multicomputer. The proposed solution minimizes the contention for links over the switch. The proposed solution makes movie scheduling very simple—if the first block of the movie is scheduled, the rest of the movie is automatically scheduled. Moreover, if the first block of the movie stream is scheduled without network contention, the proposed solution guarantees that there will be no network contention during the entire duration of playback of that movie. We show that the proposed approach to communication scheduling is optimal in utilizing the network resources. Extensive simulation results are presented to show the effectiveness of the proposed approach.