Intra Compression Efficiency in VP9 and HEVC

VP8 has recently been offered by Google as an open video compression format in attempt to compete with the widely used H.264 video compression standard. This paper describes the major differences between VP8 and H.264 and provides detailed comparative evaluations through extensive experiments. We use 29 raw video sequences, offering a wide spectrum of resolutions and content characteristics, with the resolution ranging from 176x144 (QCIF) to 3840x2160 (2160p). To ensure a fair study, we use 3 coding presets in H.264, each with three types of tuning, and 7 presets in VP8. The presets cover a variety of achieved quality or complexity levels. The performance metrics include accuracy of bitrate handling, encoding speed, decoding speed, and perceptual video quality.

The International journal of Multimedia & Its Applications, 2016

This study evaluates the performance of the three latest video codecs H.265/MPEG-HEVC, H.264/MPEG-AVC and VP9. The evaluation is based on both subjective and objective quality metrics. The assessment metric Double Stimulus Impairment Scale (DSIS) is used to evaluate the subjective quality of the compressed video sequences. The Peak Signal-to-Noise Ratio (PSNR) metricis used for the objective evaluation. Moreover, this work studies the effect of frame rate and resolution on the encoders' performance. The extensive number of experiments are conducted with similar encoding configurations for the three studied encoders. The evaluation results show that H.265/MPEG-HEVC provides superior bitrate saving capabilities compared to H.264 and VP9. However, VP9 shows lower encoding time than H.265/MPEG-HEVC but higher encoding time compared to H.264.

Signal & Information Processing …, 2012

High Efficiency Video Coding (HEVC), the latest international standard of video coding under development, has shown a major breakthrough with regards to compression efficiency. But most of the currently published studies were intended to evaluate the overall R-D performance of HEVC in comparison to prior H.264/AVC video coding standard. In this paper, we present sufficient rate-distortion performance comparisons of image coding between the HEVC and previous image and intra-only video coding standards, including JPEG 2000, JPEG LS and H.264/AVC intra high profile. In addition, some recently reported performances of HEVC are also reviewed and compared. The coding simulations are conducted on a set of recommended video sequences during the development of the HEVC standard. Experimental results show that HEVC can offer consistent performance gains over a wide range of bitrates on natural video sequences as expected. Besides, we also present the comparison results of all these standards in the scenario of lossless image coding.

High Efficiency Video Coding (HEVC) is currently being prepared as the newest video coding standard of the ITU-T Video Coding Experts Group and the ISO/IEC Moving Picture Experts Group. The main goal of the HEVC standardization effort is to enable significantly improved compression performance relative to existing standards in the range of 50% bit-rate reduction for equal perceptual video quality. Intra-frame coding is essential in both still image and video coding. In the block-based coding scheme, the spatial redundancy can be removed by utilizing the correlation between the current pixel and its neighboring reconstructed pixels from the differential pulse code modulation (DPCM) in the early video coding standard H.261 to the angular intra prediction in the latest H.265/HEVC [1], different intra prediction schemes are employed. Almost without exception, linear filters are used in these prediction schemes. This paper provides an overview of the Intra-frame coding techniques of the HEVC standard.

— High-Efficiency Video Coding (HEVC) is currently being prepared as the newest video coding standard of the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG). The main goal of the HEVC standardization effort is to enable significantly improved compression performance relative to existing standards – in the range of 50% bit rate reduction for equal perceptual video quality. This article provides an overview of the technical features and characteristics of the HEVC standard.

IEEE Transactions on Circuits and Systems for Video Technology, 2000

The compression capability of several generations of video coding standards is compared by means of peak signal-to-noise ratio (PSNR) and subjective testing results. A unified approach is applied to the analysis of designs, including H.262/MPEG-2 Video, H.263, MPEG-4 Visual, H.264/MPEG-4 Advanced Video Coding (AVC), and High Efficiency Video Coding (HEVC). The results of subjective tests for WVGA and HD sequences indicate that HEVC encoders can achieve equivalent subjective reproduction quality as encoders that conform to H.264/MPEG-4 AVC when using approximately 50% less bit rate on average. The HEVC design is shown to be especially effective for low bit rates, high-resolution video content, and low-delay communication applications. The measured subjective improvement somewhat exceeds the improvement measured by the PSNR metric.

Advances in Intelligent Systems and Computing, 2021

State-of-the-art video compression techniques play a vital role in coding and decoding of video images that consume enormous memory space. In general, video compression is widely adapted for all future mobile applications based on recent developed technologies that are inbuilt into architectures to establish communication links with minimum consumption of power and memory for visual audio and video information. High-quality video consumes more memory for a server/user which is a major drawback in video compression. We present a conceptually generic, pliable and prevalent approach to overcome this issue in video compression with minimum memory space. However, storing and backup maintenance of these large data in an efficient way have been provided the researchers a roadmap in developing novel algorithms and techniques. A video compression technique plays a vital role in storage and transmission of data through the limited bandwidth capability. In this paper, authors mentioned advanced technologies in video compression by providing identical quality and recognizing more content of video. In this paper, authors focus on compressors and decompressors (CODECs) which are there like high-efficiency video coding (HEVC/H.265) that is capable to compress the video of any resolutions like 8192 * 4320 including 8K ultra-high definition (UHD) (John Singh et al. in Int J Pure Appl Math 119:3709–3724, [1]). The author highlights the algorithmic approach that describes the prerequisites for HEVC on playback on the web browser and compression of high-definition video for live video streaming, key factors in developments in dividing the video frames into a few subsections to high compression ratio and to retrieve the same video frames with high quality and more accurately (Garcia-Pineda et al. in Comput Commun, [2]). Keywords: Video compression · CODEC · HEVC/H.265 · UHD

SMPTE Motion Imaging Journal, 2015

Google has recently finalized a next generation open-source video codec called VP9, as part of the libvpx repository of the WebM project (http://www.webmproject.org/). Starting from the VP8 video codec released by Google in 2010 as the baseline, various enhancements and new tools were added, resulting in the next-generation bit-stream VP9. The bit-stream was finalized with the exception of essential bug-fixes, in June 2013. Prior to the release however, all technical developments in fact were being conducted openly in the public experimental branch of the repository for many months. This paper provides a brief technical overview of the coding tools included in VP9, along with coding performance comparisons with other state-of-the-art video codecs -namely H.264/AVC and HEVC -on standard test sets. While a completely fair comparison is impossible to conduct because of the limitations of the respective encoder implementations, the tests show VP9 to be quite competitive with main-stream state-of-the-art codecs.

IEEE Transactions on Circuits and Systems for Video Technology, 2000