It is well-known that the problem of addressing heterogeneous networks in multicast can be solved by simultaneous transmission of multiple bitstreams of different bitrates and by layered encoding. This paper analyzes the use of H.264/AVC video coding in simulcast and for layered encoding. The sub-sequence feature of H.264/AVC enables hierarchical temporal scalability, which allows disposal of r...

DILEMMAS OF POPULATION, ENVIRONMENT AND SUSTAINABLE DEVELOPMENT In the 1980s and 1990s, there was widespread belief among environmentalists and lay people that uncontrolled population growth was responsible for environmental degradation of all types. This neo-Malthusian belief originally surfaced in the publication of The Population Bomb by Ehrlich and Ehrlich in the late 1960s, which interpret...

The transmission errors in H.264 may propagate in the temporal direction. Errors in intra-coded picture (I-frame) will propagate into the associated P-B frame if they are in the same Group Of Picture (GOP). Therefore it is important to detect errors in the I-frame rather than in the P-B frame. This paper proposes and demonstrates an effective technique of Error-Resilient Coding based on bit-err...

In this paper, an improvement of coding efficiency of the Context−based Adaptive Binary Arithmetic Coding (CABAC) is proposed for applications in Advanced Video Codecs (H.264/AVC). In the paper, more accurate estimation technique for conditional probabilities of symbols is proposed. To achieve that, the well−known data modeling technique of the Context−Tree Weighting (CTW) is used. A novel meth...

Dirac is a hybrid motion-compensated state-of-the-art video codec that can be used without the payment of license fees. It can be easily adapted for new platforms and is aimed at applications ranging from HDTV to web streaming. The objective of this paper is to analyze Dirac video codec based on several input test sequences, and compare its performance with H.264/MPEG-4 Part 10 AVC. Both Dirac ...

We present novel schemes for optimal OFDMA bitrate allocation towards video quality maximization in H.264 scalable video coding (SVC)-based 4G wireless systems. We use the rate and quality models for video characterization of the SVC extension of the H.264/AVC and develop the framework for optimal scalable video transmission. Subsequently, we derive the closed form solution of the optimal H.264...

The state-of-the-art video coding standard H.264/AVC achieves significant coding performance improvement by choosing the rate-distortion (RD) optimized encoding mode from a list of candidate modes at the cost of intensive computations, which limits the practical application of H.264/AVC. A number of fast mode decision algorithms have been recently presented in the literature in order to reduce ...

The H.264/AVC (Advanced Video Codec) is the latest standard for video coding established by the Joint Video Team ITU-T VCEG and ISO/IEC MPEG (Wiegand et al., 2003) (Sühring, 2010) (Links, 2010). This standard has many innovations, such as hybrid prediction/transform coding of intra frames and integer transforms (Richardson, 2004). Fig. 1 presents a simplified block diagram of the H.264/AVC enco...

In multimedia system, there are several video coding standards such as MPEG-1/2/4 [1]-[3], H.264/AVC [4], VC-1 [5], they are the source coding technology basis for digital multimedia applications. Despite of the emerging HEVC standard [6], H.264/AVC is the most mature video coding standard [4] [9]. China Audio and Video Coding Standard (AVS) is a new standard targeted for video and audio coding...