This paper investigates the effects of many parameters, which are crucial for performance of H.264 video coder .H.264 is the latest international video coding standard. It was jointly developed by the video coding expert group (VCEG) of the ITU-T and moving picture expert group (MPEG) of ISO/IEC. The main goals of the H.264 standardization effort have been enhanced compression performance. H.26...

Since H.264/AVC is the most widely-deployed video coding standard and has gained dominance, the necessity of copyright protection and authentication that are appropriate for this standard is unquestionable. According to H.264/AVC specific codec architecture, an efficient watermarking scheme for H.264/AVC video is proposed. The watermark information is embedded into quantized residual coefficien...

In this paper, we describe an FPGA H.264/AVC encoder architecture performing at real-time. To reduce the critical path length and to increase throughput, the encoder uses a parallel and pipeline architecture and all modules have been optimized with respect the area cost. Our design is described in VHDL and synthesized to Altera Stratix III FPGA. The throughput of the FPGA architecture reaches a...

Lagrangian Rate Distortion Optimization (RDO) is widely employed in modern video encoders such as H.264/AVC and H.264/AVC for mode decision. During the RDO process the distortion and bit rate of each mode has to be estimated and more an accurate estimation leads to better optimized decisions. This paper explores accurate, non-integer bit estimation and its impact on better RDO. Simulations show...

A new method for high capacity data hiding in H.264 streams is presented. The proposed method takes advantage of the different block sizes used by the H.264 encoder during the inter prediction stage in order to hide the desirable data. It is a blind data hiding scheme, i.e. the message can be extracted directly from the encoded stream without the need of the original host video. This fragile da...

We present a novel scheme for the transmission of H.264/AVC video streams over lossy packet networks. The proposed scheme exploits the error-resilient features of H.264/AVC codec and employs Reed-Solomon codes to protect effectively the streams. A novel technique for adaptive classification of macroblocks into three slice groups is also proposed. The optimal classification of macroblocks and th...

H.264/AVC is a novel video codec standard that provides a better coding efficiency than other previous video coding standard. In this paper, we provide a new error resilience using a reversible data embedding technique based on H.264/AVC. The algorithm is stretchy that user can make a trade-off between the quality of recovery image and DCT coefficients’ variation. The advantage of reversible da...