The audio and video synchronization plays an important role in speech recognition and multimedia communication. The audio-video sync is a quite significant problem in live video conferencing. It is due to use of various hardware components which introduces variable delay and software environments. The synchronization loss between audio and video causes viewers not to enjoy the program and decreases the effectiveness of the programs. The objective of the synchronization is used to preserve the temporal alignment between the audio and video signals. This paper proposes the audio-video synchronization using spreading codes delay measurement technique. The performance of the proposed method made on home database and achieves 99% synchronization efficiency. The audiovisual signature technique provides a significant reduction in audio-video sync problems and the performance analysis of audio and video synchronization in an effective way. This paper also implements an audio-video synchronizer and analyses its performance in an efficient manner by synchronization efficiency, audio-video time drift and audio-video delay parameters. The simulation result is carried out using Matlab simulation tools and Simulink. It is automatically estimating and correcting the timing relationship between the audio and video signals and maintaining the Quality of Service.
The cyber attacks have become most prevalent in the past few years. During this time, attackers have discovered new vulnerabilities to carry out malicious activities on the internet. Both the clients and the servers have been victimized by the attackers. Clickjacking is one of the attacks that have been adopted by the attackers to deceive the innocuous internet users to initiate some action. Clickjacking attack exploits one of the vulnerabilities existing in the web applications. This attack uses a technique that allows cross domain attacks with the help of userinitiated clicks and performs unintended actions. This paper traces out the vulnerabilities that make a website vulnerable to clickjacking attack and proposes a solution for the same.
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