nt什么时候做| 百里挑一是什么生肖| 家里为什么有蚂蚁| 什么是早孕| 子宫内膜厚什么原因引起的| 同一首歌为什么停播了| 6什么意思| 蛇鼠一窝是什么生肖| 国家为什么要扫黄| 血管痉挛吃什么药| 精华液是干什么的| 开小差是什么意思| 做彩超挂什么科| 蜜蜡和琥珀有什么区别| 白玉菩提是什么材质| 口腔检查挂什么科| 条索灶是什么意思| 痔疮吃什么好| 西辽国在现今什么地方| 胸闷气短是什么症状| 乳房痛是什么原因| 8.2号是什么星座| 头孢不能和什么食物一起吃| 什么情况下需要会诊| 荔枝吃了有什么好处| 手机root后有什么好处和坏处| 中性粒细胞百分比偏低什么意思| 什么是凤凰男| wlw是什么意思| 瓜子脸适合剪什么刘海| 甲状腺在人体什么位置| 心肌病是什么症状| 樱桃跟车厘子有什么区别| 醋泡脚有什么好处| 行驶证和驾驶证有什么区别| 皮肤暗黄是什么原因造成的| 什么地跑步| 菊花茶为什么会变绿色| 五彩绳什么时候扔掉| 女燕读什么| 送什么生日礼物给妈妈| 楚楚动人是什么意思| uvb是什么意思| 女人为什么要嫁人| 四季豆是什么| 肝囊肿吃什么药能消除| 精神内科一般检查什么| 迪丽热巴是什么族| 大腿根部疼痛是什么原因| 胃肠炎吃什么药好| 西洋参什么季节吃最好| 做梦梦到牙齿掉了是什么意思| 肚子不舒服挂什么科| 什么叫排卵期| 电饭锅内胆什么材质好| 囟门是什么| psg是什么意思| 勿忘我是什么意思| 教师节应该送老师什么花| 蜡烛燃烧会产生什么| 霍金是什么病| 夏天喝什么茶减肥| 能说会道是什么生肖| 牙痛用什么药止痛快| 吃头发的虫子叫什么| 月经血量少是什么原因| 龙和什么属相最配| 升结肠管状腺瘤是什么意思| 做胃镜前喝的那个液体是什么| 弱视是什么| oct是什么意思| 什么属相不能住西户| fci是什么意思| ns是什么意思| 大便不成形吃什么食物好| 胃酸吃点什么药| 失去理智什么意思| 混合痔什么症状| 牙齿涂氟是什么意思| 牙疼什么原因| 背信弃义是什么意思| 兵马俑是什么意思| 羊刃格是什么意思| 猕猴桃和什么榨汁好喝| remax是什么牌子| 肾阴阳两虚吃什么中成药| 萎缩性胃炎能吃什么水果| 2025年属什么生肖| 大姨妈黑色是什么原因| 88.88红包代表什么意思| 男性尿道痒吃什么药| 口角炎吃什么药| inf是什么意思| 子宫内膜增生是什么原因| 排骨炖什么好吃又有营养| 颌下腺肿大是什么原因| 小便有泡沫是什么情况| 胳膊困疼是什么原因| 胃复安又叫什么名字| 辛是什么味道| 西乐葆是什么药| 后脑勺发热是什么原因| 钓鱼执法什么意思| 结婚年数代表什么婚| 母亲节送给妈妈什么礼物| 乔顿男装属于什么档次| 五心烦热是什么症状| 左卡尼汀口服溶液主要治疗什么| 用什么刷牙能使牙齿变白| 血小板低是什么原因引起的| 梦见头发白了是什么意思| 左手发麻是什么原因| 湿气重是什么原因| 10月16日是什么星座| 眼球出血是什么原因引起的| 线雕是什么| 宜祭祀是什么意思| 杜甫自号什么| 宝宝睡觉摇头是什么原因| 仄言是什么意思| 耳鸣需要做什么检查| 鲱鱼罐头为什么这么臭| 六畜兴旺是什么生肖| 人妖是什么| 红色爱心是什么牌子| 什么是断掌| 感染了hpv有什么症状| 脆皮鸭什么意思| 宝宝拉肚子吃什么药好| 脍炙人口是什么意思| 伴手礼是什么| aki是什么意思| 为什么没有win9| 什么叫中出| 驾崩是什么意思| 西安和咸阳什么关系| 荨麻疹需要注意什么| linen是什么面料成分| 3月25日是什么星座| 苹果煮水喝有什么功效| 脚底红是什么原因| 笔记本电脑什么牌子好| 近字五行属什么| 人流手术前需要注意什么| 嗓子干吃什么药| 排卵期有什么明显症状| 心血管病人吃什么最好| 病机是什么意思| 大蒜有什么功效| fashion是什么意思| 肝内多发低密度灶是什么意思| 牙齿一碰就疼是什么原因| 镁低了是什么原因| 小针刀是什么| 蓝加黄是什么颜色| 搞破鞋是什么意思| 犯了痔疮为什么老放屁| 辛苦是什么意思| 类风湿关节炎吃什么药效果好| 今日立冬吃什么| 贡中毒有什么症状| 女性寒性体质喝什么茶| 九出十三归指什么生肖| 狮子座女和什么星座最配| 头晕头疼是什么原因| diptyque属于什么档次| mpn是什么意思| 重庆古代叫什么| gypsophila什么意思| 宝宝手足口病吃什么药| 情有独钟是什么意思| 伟岸一般形容什么人| 218是什么星座| 换药挂什么科| 宿命是什么意思| 黑便是什么原因引起的| 艾滋病是什么病毒| 不典型血管瘤什么意思| 98年一月属什么生肖| 字母哥什么位置| 单绒双羊是什么意思| 血糖高喝酒有什么影响| 幽门螺杆菌吃什么药好| 什么是飞蚊症| 老三篇是什么意思| 用白醋泡脚有什么好处| 炸酥肉用什么粉| 为什么老流鼻血| 银行卡户名是什么意思| 为什么要打破伤风| 血糖忽高忽低是什么原因| 惠什么意思| 黑化是什么意思| 娇羞是什么意思| 12月22日什么星座| 什么人容易得脑梗| 栀子花什么时候开| 人为什么会长痣| 脱脂棉是什么| 四十岁月经量少是什么原因| 北北是什么意思| remax是什么牌子| 暑假是什么时候放假| 锦鲤跳缸是什么原因| 风热证是什么意思| 脂肪肝吃什么好| 青光眼有什么症状| 长期失眠看什么科最好| 关节间隙变窄什么意思| 花枝是什么食材| 没有什么过不去| wbc是什么| 白膜是什么东西| 拐子是什么鱼| 属马的和什么属相最配| x光是检查什么的| 带环了月经推迟不来什么原因| 跑步机cal是什么意思| 包饺子剩下的面团能做什么| 嗓子痒痒是什么原因| 家婆是什么意思| 焦作有什么大学| 什么叫地包天| 51号元素是什么意思| 风度是什么意思| 着床出血是什么意思| 花木兰姓什么| 蚊子喜欢叮什么样的人| 母亲节送什么花| 蜘蛛代表什么生肖| 跛子是什么意思| 谷丙转氨酶偏低是什么意思| 黑豆有什么作用| 左什么右什么| 急得什么| 睡觉总醒是什么原因| 苋菜长什么样| 健康证都查什么| mrcp是什么检查| 乳头为什么会痒| 梅菜在北方叫什么菜| 狗嚎叫有什么预兆| 牙疼吃什么药好| 男士去皱纹用什么好| 孕妇流鼻血是什么原因| 萎缩性胃炎有什么症状| 吃完紧急避孕药不能吃什么| 1989年属蛇是什么命| 中国最长的河流是什么| 成全是什么意思| 什么叫打板| 鸭子烧什么好吃| 脑梗有什么症状| 胃肠紊乱吃什么药| 有主见是什么意思| 嗓子痒干咳吃什么药| 单独是什么意思| 顺手牵羊是什么生肖| 一直拉肚子吃什么药| 穿山甲吃什么| 什么是斜视| 有什么笑话| 异位妊娠是什么意思| 彩铃是什么意思| 百度Jump to content

DS PERFORMANCE赛车部门与道达尔将延续双....

From Wikipedia, the free encyclopedia
百度 中国移动支付的飞速发展给全球带来触动,有过亲身体验的人感触更深。

Alliance for Open Media
AbbreviationAOMedia, AOM
FormationSeptember 1, 2015; 9 years ago (2025-08-14)
FounderAmazon, Cisco, Google, Intel, Microsoft, Mozilla, Netflix[1]
TypeIndustry consortium
PurposeDevelopment of a royalty-free video format
HeadquartersWakefield, Massachusetts, U.S.
Products
Members53 (2021)
Parent organization
Joint Development Foundation
Websiteaomedia.org

The Alliance for Open Media (AOMedia) is a non-profit industry consortium headquartered in Wakefield, Massachusetts, and formed to develop open, royalty-free technology for multimedia delivery. It uses the ideas and principles of open web standard development to create video standards that can serve as alternatives to the hitherto dominant standards of the Moving Picture Experts Group (MPEG).[2][3][4]

Its first project was to develop AV1, a new open video codec and format, as a successor to VP9 and an alternative to HEVC.[1] AV1 uses elements from Daala, Thor, and VP10, three preceding open video codecs.

The governing members of the Alliance for Open Media are Amazon, Apple, ARM, Cisco, Google, Huawei, Intel, Meta Platforms, Microsoft, Mozilla, Netflix, Nvidia, Samsung Electronics and Tencent.

History

[edit]

Some collaboration and work that would later be merged into AV1 predates the official launch of the Alliance.[2]

Following the successful standardization of an audio standard in the Internet Engineering Task Force (IETF) in 2012, a working group for the standardization of a royalty-free video format began to form under the lead of members of the Xiph.Org Foundation,[5] who had begun working on their experimental video format Daala back in 2010.[6] In May 2015, the Internet Video Codec working group (NetVC) of the IETF was officially started and presented with coding techniques from Daala.[7] Cisco Systems joined forces and offered their own prototype format Thor to the working group on July 22.[8]

The lack of a suitable video format for inclusion in the specification of HTML video by the World Wide Web Consortium (W3C)[9] and the failed negotiations for one mandatory video format for WebRTC showed the need for a competitive, open video standard.

The emergence of a second patent pool for HEVC (HEVC Advance) in spring 2015 provided motivation for investments in an alternative video format and grew support for the Alliance, mainly due to the uncertainty regarding royalties for MPEG's next-generation video format, HEVC.[10]

On September 1, 2015, the Alliance for Open Media was announced with the goal of developing a royalty-free video format as an alternative to licensed formats such as H.264 and HEVC.[11][1] The founding members are Amazon, Cisco, Google, Intel, Microsoft, Mozilla, and Netflix.[1] The plan was to release the video format by 2017.[1][12]

The alliance saw expansion of its member list since inception. On April 5, 2016, the Alliance for Open Media announced that AMD, ARM, and Nvidia had joined, and Adobe, Ateme, Ittiam and Vidyo joined in the months following. On November 13, 2017, Facebook later joined as a governing member.[13] In January 2018 the alliance's website was quietly updated to add Apple as a governing member of the alliance.[14] On April 3, 2019, Samsung Electronics joined as a governing member.[15] October 1, 2019, Tencent joined as a governing member.[16]

In 2018, the founder and chairman of the MPEG acknowledged the Alliance to be the biggest threat to their business model, furthermore stating that:[17]

Alliance for Open Media has occupied the void created by MPEG’s outdated video compression standard (AVC), absence of competitive [royalty free] standards (IVC) and unusable modern standard (HEVC)... Everybody realises that the old MPEG business model is now broke.

2022

[edit]

Articles suggested that Google was in planning to release 2 open formats, High-dynamic-range video/HDR video and 3D audio, as alternatives to Dolby Atmos and Dolby Vision video technology. A draft called IAC has been developed for audio, and Samsung's HDR10+ will not be utilized.[18] During September 2022, AOMedia announced Project Caviar. Although the name is yet to be disclosed, the announcement was made public through a journal authored by AOMedia developers and biographies shared on the doc: and after a month papers calls were released with an early draft.[19] The Video Codec Working Group (CWG) was the first AOMedia technical group. Recognizing some needs, AOMedia created, in February 2022, the Volumetric Visual Media Working Group (VVMWG). In June 2022, 10 universities and 24 organizations (companies) went to Alliance for Open Media Symposium,[20] with various engineers working on AV1 and developing the new technologies in the cwg incubators gains test for the Next Generation AOM standard. There are in the alliance efforts done through different working groups. [21] AVM: AOM Video Model - was created in the AOMedia GitLab repository. It consists of tools based on research candidate. AVM is the software codebase that AOMedia is using for its research and development of the next generation video coding technologies. The development happens in stages, and each new anchor is the codebase in which previously adopted experiments have been integrated and which is used in the following round of the experiments. [22][23][24] - this repo based on Libaom, reference encoder for AV1 format.[25]

2023

[edit]

During June 2023, AOMedia announced that Zoom Video Communications would become a promoter member.[26]

AOMedia Video

[edit]

AOMedia's first project was the creation of an open video compression format and codec optimized for streaming media over the internet, intended for both commercial and non-commercial content, including user-generated content. The format is intended to be the first in a line of new, AOMedia Video (AV) formats being developed.[27]

AOMedia planned for the first version of its format (AV1) to be completed before the end of 2017.[28] However, work on the bitstream specification will be continued into 2018.[29] The format is the primary contender for standardisation by the video coding standard working group NetVC of the Internet Engineering Task Force (IETF).[30]

The main distinguishing features of AV1 are its purported royalty-free licensing terms and performance. AV1 is specifically designed for real-time applications and for higher resolutions than typical usage scenarios of the current generation (H.264) of video formats.[31]

In 2019, Sisvel International formed a patent pool for selling licenses to intellectual property it anticipates will be necessary to comply with the AV1 standard. AOMedia said this was contrary to its goal of a standard developed entirely with free, donated technology owned by the organization. Sisvel anticipates AV1 will require patented technology developed outside the AOMedia member organizations.[32]

Operation and structure

[edit]

The Alliance is incorporated in the US as a tax-exempt non-profit organization and a subsidiary "project" of the independent Joint Development Foundation (JDF), also headquartered in Wakefield.

The Alliance intends to release new video codecs as free software under the BSD 2-Clause License. It adopted the patent rules of the W3C[3] which mandate technology contributors to disclose all patents that may be relevant and to agree to a royalty-free patent license.[33] The Alliance's patent license contains a defensive termination clause to discourage patent lawsuits.

Software development happens in the open[27] using a public source code repository[31] and issue tracking system, and welcomes contributions from the general public. Contributions have to pass internal reviews and gain consensus for their adoption. Different sub-groups inside the Alliance handle testing,[34] reviews for IPR/patent problems[3][34] hardware-friendliness,[34] and editing of specification documents.[35]

There are two levels of membership: organizations can join as an ordinary member, or as a governing member with a seat on the board of directors. Confusingly, these are dubbed "founding members" in AOM terminology, although they need not be members since the Alliance was founded.

There is a broad representation of the video industry among the Alliance members, featuring several hardware, software, and content producers, OTT video distributors, providers of real-time conferencing solutions, and browser vendors. Several AOM members have previously worked on MPEG's HEVC and hold patents to it (e.g. BBC, Intel, Cisco, Vidyo, Apple, Microsoft, and Broadcom[36]).

Governing members

[edit]

As of November 2021:[37]

General members

[edit]

As of November 2023:[37]

Previous members

[edit]
  • IBM (previously a Founding/Governing member, but delisted from website as of July 7, 2020)[38]

References

[edit]
  1. ^ a b c d e Stephen Shankland (September 1, 2015). "Tech giants join forces to hasten high-quality online video". CNET. Retrieved September 1, 2015.
  2. ^ a b Bright, Peter (September 1, 2015). "Microsoft, Google, Amazon, others, aim for royalty-free video codecs". Ars Technica. Retrieved March 17, 2018.
  3. ^ a b c Bhartiya, Swapnil (September 2, 2015). "Open source, open standard, royalty-free media codecs? That's the promise of the newly formed Alliance for Open Media". CIO. IDG Communications, Inc. Retrieved March 17, 2018.[permanent dead link]
  4. ^ Lamm, Greg (September 3, 2015). "Why Microsoft and Amazon are working with Google and Netflix to make video streaming faster". American City Business Journals.
  5. ^ "NETVC (Canceled) – BOF meeting proposals for IETF 91". trac.tools.ietf.org. January 20, 2015. Archived from the original on February 22, 2016. Retrieved March 16, 2018.
  6. ^ "Initial import of Timothy Terriberry's daala-exp code". GitHub. October 13, 2010. Retrieved August 1, 2015.
  7. ^ Armasu, Lucian (March 25, 2015). "IETF Begins Standardization Process For Next-Generation 'NETVC' Video Codec (Daala)". Tom's Hardware. Retrieved August 5, 2015.
  8. ^ "NETVC IETF 93 minutes". ietf.org. Retrieved March 16, 2018.
  9. ^ Krill, Paul (August 19, 2015). "Cisco's Thor project swings a hammer at Web video codecs". InfoWorld. IDG Communications, Inc. Retrieved March 17, 2018.
  10. ^ Pozdnyakov, Andrey. "AOM AV1 vs. HEVC". elecard.com. Elecard. Retrieved March 19, 2018.
  11. ^ Zimmerman, Steven (May 15, 2017). "Google's Royalty-Free Answer to HEVC: A Look at AV1 and the Future of Video Codecs". XDA Developers. Archived from the original on June 14, 2017. Retrieved June 10, 2017.
  12. ^ Jan Ozer (September 1, 2015). "Amazon, Google, and More Working on Royalty-Free Codec". StreamingMedia.com. Retrieved September 2, 2015.
  13. ^ aomedia (November 13, 2017). "Alliance for Open Media Welcomes Facebook to Its Board as Founding Member". Alliance for Open Media. Retrieved October 27, 2019.
  14. ^ Shankland, Stephen. "Apple joins an alliance to shrink your online videos". CNET. Retrieved October 27, 2019.
  15. ^ "Samsung Joins the Alliance for Open Media Board of Directors". Alliance for Open Media. April 3, 2019. Retrieved October 27, 2019.
  16. ^ Licata, Scott (October 1, 2019). "Tencent Joins the Alliance for Open Media at the Board-Level". Alliance for Open Media. Retrieved October 27, 2019.
  17. ^ Doctorow, Cory (January 30, 2018). "After industry adopts open video standards, MPEG founder says the end is nigh". boingboing.net. Retrieved March 16, 2018.
  18. ^ "Google's Project Caviar challenges Dolby Atmos and Dolby Vision". tomsguide. September 25, 2022. Retrieved November 25, 2022.
  19. ^ "Alliance for Open Media (AOMedia) Progress Report" (PDF). 88 SMPTE Motion Imaging Journal. September 2022. doi:10.5594/JMI.2022.3190532.
  20. ^ "AOM Decoder Q2 2022".
  21. ^ "aomedia.org about". January 1, 2023.
  22. ^ "Coding Tool Research for Next Generation AOM Coding Standard".
  23. ^ "Challenges in incorporating ML in a mainstream nextgen video codec" (PDF).
  24. ^ "AVM AOMedia GitLab".
  25. ^ "AOMedia Source git clone".
  26. ^ "Zoom Joins the Alliance for Open Media". Alliance for Open Media. June 21, 2023. Retrieved July 12, 2023.
  27. ^ a b "A Progress Report: The Alliance for Open Media and the AV1 Codec". Streaming Media Magazine. April 12, 2016. Retrieved April 13, 2016.
  28. ^ "AV1: Status update". archive.fosdem.org.
  29. ^ Eyevinn (December 12, 2017), STSWE17: Jai Krishnan from Google and AOMedia giving us an update on AV1, retrieved January 5, 2018
  30. ^ Sebastian Grüner (golem.de), July 19, 2016: Der n?chste Videocodec soll 25 Prozent besser sein als H.265 (german)
  31. ^ a b "What is AV1?". Streaming Media Magazine. June 3, 2016. Retrieved June 20, 2016.
  32. ^ Pennington, Adrian (March 10, 2020). "Sisvel Announces AV1 Patent Pool". Streaming Media Magazine. Retrieved October 13, 2023.
  33. ^ Boulton, Clint (March 19, 2003). "W3C Publishes Patent Policy Draft". InternetNews.com. Retrieved March 17, 2018.
  34. ^ a b c Mukherjee, Debargha (June 24, 2019). "AllThingsRTC 2019 - Opening Keynote - Past, Present and Future of AV1". YouTube. Agora.io. Retrieved August 22, 2019.
  35. ^ Archived at Ghostarchive and the Wayback Machine: "Royalty-Free Video Encoding Netflix Meet-up". YouTube.
  36. ^ Ozer, Jan (November 27, 2017). "HEVC IP Owners Are Snatching Defeat from the Jaws of Victory". Streaming Learning Center. Retrieved March 16, 2018.
  37. ^ a b aomedia. "They Developed It. They Benefit From It. They Stand Behind It. | Alliance for Open Media". Alliance for Open Media. Retrieved November 22, 2021.
  38. ^ "They Developed It. They Benefit From It. They Stand Behind It. | Alliance for Open Media". aomedia.org. July 7, 2020. Archived from the original on July 7, 2020.
[edit]
中国什么时候灭亡 做梦梦到自己拉屎是什么意思 qd医学上是什么意思 喘息是什么意思 感染性腹泻吃什么药
淋巴细胞计数偏低是什么原因 人体缺钾会有什么症状 荠菜是什么菜 陌上花是什么意思 润滑油是什么
病理单克隆抗体检测是什么 马克笔什么牌子好 月经快来了有什么征兆 月经老是提前是什么原因 黑指甲是什么症状图片
尿多什么原因 四爱是什么意思 须尽欢什么意思 便秘吃什么药最好 什么排球好
狗仗人势是什么生肖hcv9jop7ns1r.cn 低密度脂蛋白胆固醇是什么意思aiwuzhiyu.com 什么是文字狱hcv9jop7ns5r.cn 为什么会打雷闪电bjcbxg.com 月经稀发是什么意思hcv9jop5ns2r.cn
炖牛肉放什么调料好吃inbungee.com 倒着走路有什么好处hcv7jop7ns2r.cn 立春是什么时候hcv8jop3ns7r.cn 牛腩是什么hcv8jop7ns3r.cn 三个土读什么hcv7jop6ns5r.cn
为什么乳头会有白色分泌物hcv8jop5ns3r.cn 什么是锆石tiangongnft.com 坐飞机需要带什么证件hcv8jop6ns3r.cn 蒙古族的那达慕大会是在什么时候aiwuzhiyu.com crocodile是什么牌子hcv9jop7ns5r.cn
cf是什么hcv9jop0ns1r.cn 女性肛裂要抹什么药好hcv9jop2ns6r.cn 什么时候做四维clwhiglsz.com 鸡犬不宁是什么意思hcv7jop6ns3r.cn 气血不足看什么科室hcv8jop7ns7r.cn
百度