h.264的2007年11月最新修訂標(biāo)準(zhǔn)，下載自itu官方網(wǎng)站
標(biāo)簽： 2007 264 標(biāo)準(zhǔn)
上傳時間： 2014-01-13
上傳用戶：xaijhqx
具有浮點(diǎn)指令的g.729語音壓縮編碼，符合ITU-T G.729 Annex C 規(guī)范，通過修改makefile可以支持windows/linux/solaris等操作系統(tǒng)，僅需要很少的更改就可以應(yīng)用到voip領(lǐng)域
標(biāo)簽： 729 浮點(diǎn) 指令 語音壓縮
上傳時間： 2016-09-24
上傳用戶：hongmo
g.729a語音壓縮編碼最新版本，符合ITU-T G.729 Annex A 2006年的規(guī)范，通過修改makefile可以支持windows/linux/solaris等操作系統(tǒng)，g.729a是g.729的簡化復(fù)雜度后的結(jié)果，適合應(yīng)用在嵌入式領(lǐng)域的voip實(shí)現(xiàn)。
上傳時間： 2013-12-19
上傳用戶：cylnpy
ITU656介紹，提供使用者了解ITU-R BT.601規(guī)范
上傳時間： 2014-06-28
上傳用戶：lijianyu172
H.248協(xié)議，也叫MeGaCo協(xié)議，是媒體網(wǎng)關(guān)控制器（MGC）與媒體網(wǎng)關(guān)（MG）之間的一種媒體網(wǎng)關(guān)控制協(xié)議，這個協(xié)議是一項(xiàng)ITU-T與IETF合作結(jié)果的新標(biāo)準(zhǔn)。目前ITU-T、IETF、軟交換論壇等標(biāo)準(zhǔn)化組織正在加緊對H.248協(xié)議進(jìn)行完善，各大電信設(shè)備制造商也在H.248協(xié)議的研發(fā)和應(yīng)用上加大了投入。與MGCP協(xié)議相比，H.248協(xié)議可以支持更多類型的接入技術(shù)并支持終端的移動性，除此之外，H.248協(xié)議最顯著之處在于能夠支持更大規(guī)模的網(wǎng)絡(luò)應(yīng)用，而且更便于對協(xié)議進(jìn)行擴(kuò)充，因而靈活性更強(qiáng)，已逐漸取代MGCP發(fā)展成為媒體網(wǎng)關(guān)控制協(xié)議的標(biāo)準(zhǔn)
上傳時間： 2016-12-17
上傳用戶：笨小孩
H.264/AVC, the result of the collaboration between the ISO/IEC Moving Picture Experts Group and the ITU-T Video Coding Experts Group, is the latest standard for video coding. The goals of this standardization effort were enhanced compression efficiency, network friendly video representation for interactive (video telephony) and non-interactive applications (broadcast, streaming, storage, video on demand). H.264/AVC provides gains in compression efficiency of up to 50％ over a wide range of bit rates and video resolutions compared to previous standards. Compared to previous standards, the decoder complexity is about four times that of MPEG-2 and two times that of MPEG-4 Visual Simple Profile. This paper provides an overview of the new tools, features and complexity of H.264/AVC.
標(biāo)簽： the collaboration between Experts
上傳時間： 2013-12-30
上傳用戶：dongbaobao
COSTG711算法，完全兼容ITU-G.711，來自于Cambridge University。
上傳時間： 2017-01-13
上傳用戶：er1219
Overview Input Clock = 24Mhz Preview VGA 15fps @ 60Hz VGA 12.5fps @ 50Hz Capture VGA 15fps @ 60Hz VGA 12.5fps @ 50Hz Output Format YCbCr 4:2:2 (ITU 656) YCbCr to RGB conversion R = Y + (351*(Cr – 128)) >> 8 G = Y – (179*(Cr – 128) + 86*(Cb – 128))>>8 B = Y + (443*(Cb – 128)) >> 8
標(biāo)簽： VGA fps Overview Capture
上傳時間： 2013-12-24
上傳用戶：遠(yuǎn)遠(yuǎn)ssad
This document contains a detailed description of the usage and configuration of the JSVM [Joint Scalable Video Model] software for the Scalable Video Coding [SVC] project of the Joint Video Team [JVT] of the ISO/IEC Moving Pictures Experts Group [MPEG] and the ITU-T Video Coding Experts Group [VCEG]. It provides information how to build the software on Windows32 and Linux platforms. It contains a description of the usage and configuration for the binaries built from the software package, including examples for spatial, SNR and combined scalability scenarios. Guidelines for the integration and validation of new tools in the software are provided.
標(biāo)簽： configuration description the document
上傳時間： 2017-03-26
上傳用戶：sz_hjbf
A certification path is an ordered list of certificates starting with a certificate issued by the relying party s trust root, and ending with the target certificate that needs to be validated. Certification path validation procedures are based on the algorithm supplied in ITU-T Recommendation X.509 and further defined in Internet Engineering Task Force (IETF) Request for Comments (RFC) 3280. Certification path processing verifies the binding between the subject distinguished name and/or subject alternative name and the subject public key defined in the target certificate. The binding is limited by constraints, which are specified in the certificates that comprise the path, and inputs that are specified by the relying party. To ensure secure interoperation of PKI-enabled applications, the path validation must be done in accordance with the X.509 and RFC 3280 specifications. This document provides the test assertions and the test cases for testing path validation software against these specifications.
標(biāo)簽： certification certificates certificate starting
上傳時間： 2017-07-31
上傳用戶：清風(fēng)冷雨
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