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- Bu səhifədəki naviqasiya:
- Real Media HD
- SMPTE
- WMV-9 (VC-1) WMV9 of Microsoft
- Source code for VC-1 (WMV9)
- VC-2 STANDARD
- Multi-resolution transforms
- Frame and field coding
- Variable bit depths
- Simple stream navigation
Post – HEVC activityBoth MPEG and VCEG have established AHGs (ad hoc groups) for exploring next generation video coding. Grois et al (See item 7 under tutorials) have suggested as follows: Focusing on perceptual models and perceptual quality, and perceptually optimized video compression provision: http://www.provision-itn.eu PROVISION is a network of leading academic and industrial organizations in Europe including international researchers working on the problems with regard to the state-of-the-art video coding technologies. The ultimate goal is to make noteworthy technical advances and further improvements to the existing state-of-the-art techniques of compression video material. AV1 codec Alliance for Open Media (AOM) http://tinyurl.com/zgwdo59 Website: http://www.streamingmedia.com/Articles/Editorial/What-Is -.../What-is-AV1-111497.aspx AOM (charted members Amazon, Cisco, Google, Intel Corporation, Microsoft, Mozilla, and Netflix). In April 2016, ARM, AMD and NVIDIA joined the alliance to help ensure that the codec is hardware friendly and to facilitate and accelerate AV1 hardware support. AOM has nearly finalized a codec called AV1 based on CISCO’s Thor, Google’s VP10 and Mozilla’s DAALA with following goals:
AV1 is to be shipped sometime between Dec. 2016 and March 2017 and is positioned to replace Google’s VP9 and to compete with HEVC. It is designed to be royalty free. In terms of makeup, the Alliance members enjoy leading positions in the following markets:
The Alliance is targeting an improvement of 50 percent over VP9/HEVC with reasonable increases in encoding and playback complexity. One focus is UHD video, including higher bitrate, wider color gamut, and increased frame rates, with the group targeting the ability to play 4K 60fps in a browser on a reasonably fast computer. The base version of the codec will support 10-bit and 12-bit encoding, as well as the BT.2020 color space. Another focus is providing a codec for WebRTC (Real-Time Communications), an initiative supported by Alliance members Google and Mozilla, and similar applications including Microsoft's Skype. P.S: This material on AV1 codec is collected from Streaming Media Magazine, “What is AV1”, Jan Ozer, Posted on June 3, 2016. For details on AOM, please access http://aomedia.org The code base for AOM is here https://aomedia.googlesource.com/
The following link shows how to build and test AOM, and also provides test sequences. http://aomedia.org/contributor-guide/
AV1-P1 As AV1 is designed to be a royalty free codec, gather all details about this codec (website, steaming media etc) and implement using standard test sequences. Compare its performance with HEVC using the standard criteria such as PSNR, BD bitrate, BD PSNR, SSIM, implementation complexity etc. AV1-P2 See AV1-P1 Based on the performance comparison, explore any changes in the functionalities (transform/quantization/ME-MC, entropy coding, intra-inter and other modes) of the codec that can result in further in improving AV1’s compression performance with negligible increase in complexity. AV1-P3 See AV1-P1 Can AV1 codec be applied to SCC? If so compare its performance with HEVC SCC extension. AV1-P4 See AV1-P1 Explore how AV1 Codec can be modified for scalable video coding similar to HSVC. AV1-P5 See AV1-P1 Explore how AV1 Codec can be modified for 3D-Multiview coding similar to HSVC. AV1-P6 Performance comparison of SDCT with DCT and DDCT is investigated in [E392]. In AV1 INTDCT is used. Replace INTDCT with INTSDCT and implement the performance comparison based on various test sequences including 4K and 8K and different block sizes. See the Tables and Figures in [E392].
SMPTE (the Society of Motion Picture and Television Engineers) is an internationally recognized standards developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries on six continents. SMPTE’s Engineering Documents, including Standards, Recommended Practices and Engineering Guidelines, are prepared by SMPTE’s Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates closely with other standards-developing organizations, including ISO, IEC and ITU. SMPTE Engineering Documents are drafted in accordance with the rules given in Part XIII of its Administrative Practices. http://www.smpte.org email: eng@smpte.org About the Society of Motion Picture and Television Engineers® (SMPTE®) For the past 100 years, the people of the Society of Motion Pictures and Television Engineers (SMPTE, pronounced "simp-tee") have sorted out the details of many significant advances in entertainment technology, from the introduction of "talkies" and color television to HD and UHD (4K, 8K) TV. Since its founding in 1916, the Society has earned an Oscar® and multiple Emmy® Awards for its work in advancing moving-imagery education and engineering across the communications, technology, media, and entertainment industries. The Society has developed thousands of standards, recommended practices, and engineering guidelines, more than 800 of which are currently in force. SMPTE's global membership today (Jan. 2017) includes 7,000 members, who are motion-imaging executives, engineers, creative and technology professionals, researchers, scientists, educators, and students. A partnership with the Hollywood Professional Association (HPA®) connects SMPTE and its membership with the professional community of businesses and individuals who provide the expertise, support, tools, and infrastructure for the creation and finishing of motion pictures, television programs, commercials, digital media, and other dynamic media content. Information on joining SMPTE is available at www.smpte.org/join. Also SMPTE WEBCASTS (webinars).
VC1-P1 See [E393]. Apply the FCDR to VC1 codec both as a post processing operation and as an in loop (embedded) operation. Implement the projects for VC1 similar to those described in P.5.268 and P.5.269. WMV-9 (VC-1) WMV9 of Microsoft Windows Movie Maker, in Windows Vista or XP can be used, but with limited functionality. It can be used to convert a WMV file to AVI format, for example. For more precise control of encoding parameters, you can use the Windows Media encoder tool, freely available at http://www.microsoft.com/windows/windowsmedia/forpros/encoder/default.mspx. It is an encoding-only tool. Source code for such tools is not available. You can also use commercial video editing tools , such as the ones listed at http://www.microsoft.com/windows/windowsmedia/forpros/service_provider/software/default.aspx#encoding Source code for VC-1 (WMV9) http://store.smpte.org/VC-1-Test-Material-p/vc-1.htm
VC-2 STANDARD The VC-2 standard specifies the compressed stream syntax and reference decoder operations for a video compression system. VC-2 is an intra frame video compression system aimed at professional applications that provides efficient coding at many resolutions including various flavors of CIF, SDTV and HDTV. VC-2 utilizes wavelet transforms that decompose the video signal into frequency bands. The codec is designed to be simple and flexible, yet be able to operate across a wide range of resolutions and application domains. The system provides the following capabilities:
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