Abstract — In this paper, a new no-reference objective metric for the quality assessment of H.264/AVC encoded video is proposed and evaluated. Quality scores provided by the new metric are computed as a linear combination of simple features extracted from the video sequence received at the decoder

The H.264/AVC video coding standard has been recently proposed by the Joint Video Team of ITU-T and MPEG experts. The AVC encoder achieves video bitstreams at the same quality as the previous standard coders, while requiring typically 50 % of the bit rate. This paper proposes a Lagrangian optimized

modes. In this paper, we propose an algorithm for fast coding mode selection in H.264/AVC encoders by reducing the number of candidate modes. We also present a rate estimation method for further reduction of Lagrangian cost calculation. Extensive experiments show that the proposed methods can reduce

the best coding mode for the current macroblock. In this paper, a fast intra mode decision algorithm for H.264/AVC encoder based on dominant edge direction (DED) is proposed. The algorithm uses the approximation of discrete cosine transform (DCT) coefficient formula. By detecting the DED before intra

the H.264/AVC encoders to achieve efficiencies close to optimal in real-time conditions. The algorithm employs several search strategies to adapt to local motion activity, and the number of checked search points is set by the encoder controller for each macroblock. The algorithm can achieve results

-pler optimizations. Mode selection by simply minimizing the dis-tortion with motion vectors and header information produces very similar performance to the full constrained optimization, while it reduces the mode selection and over all encoding time by 31 % and 12%, respectively. The proposed approach can be applied

The joint effort by ITU-T's Video Coding Experts Group and ISO/IEC's Moving Pictures Experts Group resulted in standardization of H.264/MPEG-4 AVC in 2003 [1]. Like previous standards, H.264/AVC specifies only a decoder, therefore allowing for improvement in compression rate, quality

the perceptual effects of packet loss could lead to a better understanding of the QoE experienced by the enduser. In this paper, we present the results obtained from a series of subjective video quality tests that evaluated the quality of H.264/AVC videos distorted by several packet loss patterns. We draw some

The joint effort by ITU-T's Video Coding Experts Group and ISO/IEC's Moving Pictures Experts Group resulted in standardization of H.264/MPEG-4 AVC in 2003 [1]. Like previous standards, H.264/AVC specifies only a decoder, therefore allowing for improvement in compression rate, quality

• H.264 does block based coding. • Each frame is divided into blocks of 16x16 pixels called macroblocks (MB). • Each MB can be encoded using blocks of pixels that are already encoded within the current frame- Intra frame coding. • MBs can be coded using blocks of pixels in previous or future