This paper proposes a video encryption algorithm using RSA and Pseudo Noise (PN) sequence, aimed at applications requiring sensitive video information transfers. The system is primarily designed to work with files encoded using the Audio Video Interleaved (AVI) codec, although it can be easily ported for use with Moving Picture Experts Group (MPEG) encoded files. The audio and video components ...

Video structure extraction is essential to automatic and content-based organization, retrieval and browsing of video. However, while many robust shot segmentation algorithms have been developed, it is still difficult to extract structures from a film. In this paper, we present a novel video and audio segmentation scheme, in which audio and image information is integrated in video structure extr...

Efficient and effective video classification and annotation demands automated unsupervised classification and annotation of videos based on its embedded video content as manual indexing is unfeasible. Audio is a rich source of information in the digital videos that can provide useful descriptor for indexing the video databases. Audio archives contrast with image or video archives in a number of...

The MPEG-2 International standard consists of three layers: audio, video and systems [2]. The audio and the video layers define the syntax and semantics of the corresponding "elementary streams." The systems layer supports synchronization and interleaving of multiple compressed streams, buffer initialization and management, and time identification. RFC 2250 [3] describes packetization technique...

We carried out a number of subjective experiments for audiovisual, audio-only, and video-only quality assessment. We selected content and encoding parameters at very low bitrates that are typical of mobile applications. Using these data, we explore the influence of video codecs and frame rate as well as audio channels and sampling rate on quality. Finally, the optimal trade-off between bits all...

We present a method that exploits the information theoretic framework described in [1] to extract optimal audio features with respect to the video features. A simple measure of mutual information between the resulting audio features and the video ones allows to detect the active speaker among different candidates. The results show that our method is able to exploit the shared speech information...

MUVIS is a collaborative framework that supports indexing, browsing and querying of various multimedia types such as audio, video, audio/video interlaced in several formats. It allows real-time audio and video capturing, encoding by last generation codecs such as MPEG-4, H.263+, MP3 and AAC. MUVIS also supports several audio/video file format such as AVI, MP4, MP3 and AAC. MUVIS achieves a glob...

Audio/Video Conferencing Systems need communication channels between their clients in order to transport RTP packets from one client to another. In this paper we investigate audio/video conferencing as a Web Service and the deployment of publish/subscribe systems in the context of audio/video conferencing systems. In this paper we use our research system NaradaBrokering, which supports both pee...

Digital signal processing (DSP) underpins modern wireless and wireline communications, medical diagnostic equipment, military systems, audio and video equipment, and countless other products, becoming increasingly common in consumers' lives. Due to advances in semiconductor technology, ever more complex DSP algorithms, protocols, and applications are now feasible, which, in turn, increase the c...

A digital video archive system differs from a regular digital archive system in that it can manage multimedia resources, such as video and audio contents, as well as metadata textual documentation. Thus, a complete digital video archive system must combine various technologies of multimedia searching and presentation. This paper takes the Development of Value-Added Application on Video Archive,...