Current Issue : January-March Volume : 2024 Issue Number : 1 Articles : 5 Articles
This paper introduces thorough comparative and interoperability analyses involving a browser-based P2P video streaming approach utilizing WebRTC (web real-time communication), along with WebRTC hybrid solutions developed using the React Native framework (for mobile) and the electron framework (for desktop and Raspberry Pi). The assessment is carried out based on various metrics, including CPU (central processing unit) load, RAM (random access memory) utilization, and network data consumption. The obtained findings highlight the potential of integratingWebRTC P2P video streaming into hybrid applications as a promising alternative for real-time video streaming applications in embedded systems; given that, compared to the current mainstreams, e.g., Chrome or Firefox, the proposed approach has superiority performance in terms of CPU load, RAM usage, and network occupancy. The results also demonstrated that interoperability is ensured between the two types of applications (web-based and hybrid-based one)....
Adaptive streaming based on DASH offers personalized video experience and smooth playback by allowing dynamical adjustments of the video bitrate to the variations of network conditions. This is especially important for current and future Internet video streaming applications, including emerging ones such as virtual reality-based, as adaptive streaming plays a key role in providing high quality viewing experience, especially in limited bandwidth delivery environments. To enable this promising avenue in a 5G context, efforts are made to consider it alongside multicast and edge caching, as part of the next generation communication technology. In this paper, we model the adaptive streaming transmission problem in a mobile scenario as a multi-source multicast multi-rate problem (MMMP) whose linear relaxation is concave. We decompose the problem in terms of clients and propose the distributed delivery algorithm (DDA). The computation complexity, convergence and time-varying adaptation of DDA are theoretically analyzed. Additionally, to further reduce the computation complexity of the solution, a heuristic approximation method (H-DDA) based on the physical meaning of the problem is proposed and it is also shown how H-DDA converges to the optimal value by numerical means. Finally, we conduct a series of simulation tests to demonstrate the superiority of the proposed HDDA in comparison with other state-of-art solutions....
After the covid 19 period ended, learning at Medan State University was conducted face-to-face and online, creating good learning media and design is part of the effort to achieve learning objectives effectively as mandated by the education system. This study aims to develop hybrid learning multimedia assisted by telegram, which is feasible, practical and makes students independent and influential. The research was conducted at the Physics Department of State University of Medan. The phases that will be carried out during the research are needs analysis, design of learning multimedia, development and validation of learning multimedia, implementation of multimedia to students, and internal and external evaluation. The resulting product is a learning multimedia that will be applied to partners, namely students of the Physics Department who take Modern Physics courses. This multimedia was sent to the Telegram group class of 2021 B and 2021 C students. The results of this study are: (a) the percentage of assessment scores for learning multimedia from material experts is 81% and the percentage of assessment scores from media experts is 83% (b) the percentage of student independence questionnaires is 83.8% (c) the percentage of student practicality questionnaires is 88.2% (d) N-gain for PSPF 2021-B is obtained, the result obtained is 0.23 because N-gain <0.23 in the low category and N-gain for PSPF 2021-C is obtained, the result obtained is 0.3 in the medium category....
Multimedia technology develops and brings considerable changes of interpersonal communication. Nowadays, communicating with non-verbal languages like pictures, texts, music etc. is a common occurrence. And scholars have started to construe the meaning behind these new discourses which are carried by more than one mode. As a result, it unseals the gate to the analysis of multimodal discourses and the discourses of it ranges from predominant still discourses in the form of pictures, posters, etc., to dynamic discourses, in the form of dynamic advertisements, TV shows, films, etc. Due to the lack analysis of dynamic discourses, especially filmic discourses, this thesis chooses five scenes of the film Frozen as the data. And backed up by the foundation stones—visual grammar, an analysis of the selected scenes will be made in visual mode in order to test the adaptability of applying visual grammar to analyze filmic discourses and elaborate the transmittal of interactive meaning in this film. The present study shows that visual grammar, mainly applied to analyze still images, can be also propitious to the transmittal of interactive meaning in filmic discourses because the rules conform to the meaning transmittal of the film Frozen . Besides, this thesis also concludes the producer’s major ways in the transmittal of interactive meaning both in visual mode. By analyzing the selected scenes of the film Frozen , the present study may serve as an expansion of dynamic discourse analysis, and be propitious to elaborate the transmittal of interactive meaning in filmic discourses....
The safeguarding of intellectual property and maintaining privacy for video content are closely linked to the effectiveness of security protocols employed in internet streaming platforms. The inadequate implementation of security measures by content providers has resulted in security breaches within entertainment applications, hence causing a reduction in the client base. This research aimed to enhance the security measures employed for video content by implementing a multi-key approach for encryption and decryption processes. The aforementioned objective was successfully accomplished through the use of hybrid methodologies, the production of dynamic keys, and the implementation of user-attribute-based techniques. The main aim of the study was to improve the security measures associated with the process of generating video material. The proposed methodology integrates a system of mathematical equations and a pseudorandom key within its execution. This novel approach significantly augments the degree of security the encryption mechanism provides. The proposed methodology utilises a set of mathematical equations that are randomly employed to achieve encryption. Using a random selection procedure contributes to the overall enhancement of the system’s security. The suggested methodology entails the division of the video into smaller entities known as chunks. Following this, every segment is subjected to encryption using unique keys that are produced dynamically in real-time. The proposed methodology is executed via Android platforms. The transmitter application is tasked with the responsibility of facilitating the streaming of the video content, whereas the receiver application serves the purpose of presenting the video to the user. A careful study was conducted to compare and contrast the suggested method with other similar methods that were already in use. The results of the study strongly support the safety and dependability of the procedure that was made available....
Loading....