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WebM：修订间差异

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{{noteTA
{{NoteTA
|G1=IT
|G1=IT
|1=zh-cn:项目; zh-tw:專案;
|2=zh-cn:支持; zh-tw:支援;
}}
}}
{{Infobox file format
{{Infobox file format
| name = WebM
| name = WebM
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| logo = [[File:WebM logo.svg|200px]]
| icon =
| extension = <code>.webm</code>
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| logo = [[File:WebM logo.svg|200px]]
| extension = <code>.webm</code>
| mime = <code>video/webm</code><br/><code>audio/webm</code>
| type code =
| mime = <code>video/webm</code><br/><code>audio/webm</code>
| type code =
| uniform type =
| magic =
| uniform type =
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| owner = [[Google]]
| magic =
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| released = 2010年5月19日<ref name="webm-release">{{citation |url=http://www.engadget.com/2010/05/19/google-launches-open-webm-web-video-format-based-on-vp8/ |title=Google launches open WebM web video format based on VP8 |date=2010-05-19 |first=Nilay |last=Patel |publisher=Engadget |accessdate=2010-05-20 |archive-date=2011-06-04 |archive-url=https://web.archive.org/web/20110604181535/http://www.engadget.com/2010/05/19/google-launches-open-webm-web-video-format-based-on-vp8/ |dead-url=no }}</ref>
| genre = Container
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| genre = [[视频文件格式]]
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| owner = [[Google]]
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| extended from = [[Matroska]]子集
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| released = 2010-05-19<ref name="webm-release">{{citation |url=http://www.engadget.com/2010/05/19/google-launches-open-webm-web-video-format-based-on-vp8/ |title=Google launches open WebM web video format based on VP8 |date=2010-05-19 |first=Nilay |last=Patel |publisher=Engadget}}</ref>
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| container for = [[VP8]]、[[VP9]]、[[AOMedia Video 1|AV1]]（视频）<br/> [[Vorbis]]、[[Opus (音频)|Opus]]（音频）
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| genre = [[视频文件格式]]
| free = 是<ref name="wemb-off-faq" />
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| extended from = [[Matroska]]
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| url = [http://www.webmproject.org/ The WebM Project]
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| container for = [[VP8]]、[[VP9]]（视频）<br/> [[Vorbis]]、[[Opus]]（音频）
| free = Yes. [http://www.webmproject.org/about/faq/#licensing BSD-style license]
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| url = [http://www.webmproject.org/ The WebM Project]
}}
}}
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{{lang|en|'''WebM'''}}是一个由[[Google]]资助的專案，目標是构建一个[[自由档案格式|开放]]的、免版權費用的[[视频文件格式]]。该视频文件格式应能提供高质量的[[视频压缩]]以配合[[HTML 5]]使用。


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{{lang|en|'''WebM'''}}是一个由[[Google]]资助的專案，目標是构建一个[[自由档案格式|开放]]的、免版權費用的[[视频文件格式]]。该视频文件格式应能提供高品質的[[视频压缩]]以配合[[HTML5]]使用。
WebM项目是一个使用[[BSD许可证]]的[[开源]]项目。它采用了[[On2 Technologies]]开发的[[VP8]]及其后续版本[[VP9]]视频编解码器和[[Xiph.Org基金会]]开发的[[Vorbis]]音频编解码器，使用的[[多媒体封装格式|封装格式]]则以[[Matroska]]格式為基礎。<ref name=webm-blog>{{cite web |url=http://webmproject.blogspot.com/2010/05/introducing-webm-open-web-media-project.html|title=Introducing WebM, an open web media project |accessdate=2010-05-19 |date=2010-05-19}}</ref><ref name=faq>{{cite web|url=http://www.webmproject.org/about/faq/ |title=WebM FAQ |date=2010-05-19}}</ref>


WebM项目是一个使用[[BSD许可证]]的[[开源]]项目。它采用了[[On2 Technologies]]开发的[[VP8]]及其后续版本[[VP9]]视频编解码器和[[Xiph.Org基金会]]开发的[[Vorbis]]、[[Opus (音频)|Opus]]音频编解码器，使用的[[多媒体封装格式|封装格式]]则以[[Matroska]]格式為基礎<ref name="wemb-off-faq">{{cite web |url=https://www.webmproject.org/about/faq/ |title=WebM FAQ |date=19 May 2010 |quote=WebM is an open media file format designed for the web. WebM files consist of video streams compressed with the VP8 video codec and audio streams compressed with the Vorbis audio codec. The WebM file structure is based on the Matroska media container. |access-date=2018-09-01 |archive-date=2021-09-22 |archive-url=https://web.archive.org/web/20210922124446/https://www.webmproject.org/about/faq/ }}</ref><ref>{{citation |url=http://webmproject.blogspot.com/2010/05/introducing-webm-open-web-media-project.html |title=Introducing WebM, an open web media project |accessdate=19 May 2010 |date=19 May 2010 |first1=Jeremy |last1=Doig |first2=Mike |last2=Jazayeri |publisher=WebM Project |archive-date=2012-04-26 |archive-url=https://www.webcitation.org/67CpWxl6p?url=http://blog.webmproject.org/2010/05/introducing-webm-open-web-media-project.html |dead-url=no }}</ref><ref>{{citation |url=http://www.xiph.org/press/2010/webm/ |title=Xiph.Org announces support for the WebM open media project |first=Chris |last=Montgomery |authorlink=Chris Montgomery |accessdate=20 May 2010 |date=19 May 2010 |publisher=[[Xiph.Org Foundation|Xiph]] |archive-date=2011-02-22 |archive-url=https://web.archive.org/web/20110222163318/http://xiph.org/press/2010/webm/ |dead-url=no }}</ref>。
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==支援==


[[File:Schlossbergbahn.webm|thumb|250px|WebM 视频]]
===軟體===
WebM项目是在2010年的[[Google I/O]]会议上发布的<ref name=webm-blog/>，之中宣布將會支援WebM的廠商有[[Mozilla]]<ref>{{citation |url=http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ |title=Open Web, Open Video and WebM |date=2010-05-19 |publisher=Mozilla |first=Mike |last=Shaver |authorlink=Mike Shaver}}</ref><ref>{{citation |url=http://hacks.mozilla.org/2010/05/firefox-youtube-and-webm/ |title=Firefox, YouTube and WebM |first=Christopher |last=Blizzard |authorlink=Christopher Blizzard |date=2010-05-19 |publisher=Mozilla}}</ref>、[[Opera软件公司|Opera]]<ref>{{citation |url=http://labs.opera.com/news/2010/05/19/ |title=Welcome, WebM <video>! |first=Håkon Wium |last=Lie |authorlink=Håkon Wium Lie |date=2010-05-19 |publisher=Opera}}</ref><ref>{{citation |url=http://dev.opera.com/articles/view/opera-supports-webm-video/ |title=Opera supports the WebM video format |date=2010-05-19 |first=Chris |last=Mills |publisher=Opera}}</ref>和Google<ref>{{citation |url=http://blog.chromium.org/2010/05/webm-and-vp8-land-in-chromium.html |title=WebM and VP8 land in Chromium |date=2010-05-19 |first=Jim |last=Bankoski |publisher=Google}}</ref>。


Apple公司在macOS Big Sur 11.3的Safari中，加入了对Google WebM影片编解码器的支持。
另外，[[Adobe Systems|Adobe]]已宣布[[Adobe Flash Player]]将在未来支援VP8，但還沒有宣布會支援Vorbis或WebM<ref name="webm-release"/><ref>{{citation |url=http://blogs.adobe.com/flashplatform/2010/05/adobe_support_for_vp8.html |title=Flash Player Will Support VP8 |date=2010-05-19 |publisher=Adobe |first=Matt |last=Rozen}}</ref>。


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==支援==
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[[VLC]]<ref>{{citation |url=http://people.videolan.org/~jb/webm/ |title=Welcome to VLC's Webm page! |first=Jean-Baptiste |last=Kempf |publisher=VideoLAN}}</ref><ref>{{citation |url=http://www.kabatology.com/05/26/download-vlc-media-player-1-1-0-with-webm-support/ |title=Download VLC Media Player 1.1.0 with WebM Support |date=2010-05-26 |publisher=Kabatology |first=Martin |last=Kaba}}</ref>、[[Miro]]<ref>{{citation |url=http://www8.getmiro.com/blog/2010/05/miro-video-converter-is-the-first-webm-vp8-converter/ |title=Miro Video Converter is the first WebM / VP8 converter! |date=2010-05-21 |publisher=Participatory Culture Foundation |first=Nicholas |last=Reville}}</ref><ref>{{citation |url=http://www.kabatology.com/05/21/miro-video-converter-2-0-adds-support-for-open-webm-vp8-video-format/ |title=Miro Video Converter 2.0 adds support for open WebM（vp8）video format |date=2010-05-21 |publisher=Kabatology |first=Martin |last=Kaba}}</ref>和[[Moovida]]<ref>{{citation |url=http://www.kabatology.com/05/22/moovida-media-player-now-supports-webm-vp8-video-format/ |title=Moovida Media Player now supports WebM（VP8）Video format |date=2010-05-22 |publisher=Kabatology |first=Martin |last=Kaba}}</ref>等播放器也已宣布會支援。
WebM项目是在2010年的[[Google I/O]]会议上发布的，之中宣布將會支援WebM的網頁瀏覽器有[[Mozilla Firefox]]<ref>{{citation |url=http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ |title=Open Web, Open Video and WebM |date=2010-05-19 |publisher=Mozilla |first=Mike |last=Shaver |authorlink=Mike Shaver |accessdate=2010-05-20 |archive-date=2011-05-11 |archive-url=https://web.archive.org/web/20110511202812/http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ |dead-url=no }}</ref><ref>{{citation |url=http://hacks.mozilla.org/2010/05/firefox-youtube-and-webm/ |title=Firefox, YouTube and WebM |first=Christopher |last=Blizzard |authorlink=Christopher Blizzard |date=2010-05-19 |publisher=Mozilla |accessdate=2010-06-12 |archive-date=2011-01-31 |archive-url=https://web.archive.org/web/20110131181002/http://hacks.mozilla.org/2010/05/firefox-youtube-and-webm/ |dead-url=no }}</ref>、[[Opera電腦瀏覽器|Opera]]<ref>{{citation |url=http://labs.opera.com/news/2010/05/19/ |title=Welcome, WebM &#60;video>! |first=Håkon Wium |last=Lie |authorlink=哈肯·维姆·莱 |date=2010-05-19 |publisher=Opera |deadurl=yes |archiveurl=https://web.archive.org/web/20110321150357/http://labs.opera.com/news/2010/05/19/ |archivedate=2011-03-21 |accessdate=2010-06-12 }}</ref><ref>{{citation |url=http://dev.opera.com/articles/view/opera-supports-webm-video/ |title=Opera supports the WebM video format |date=2010-05-19 |first=Chris |last=Mills |publisher=Opera |accessdate=2010-05-20 |archive-date=2011-04-05 |archive-url=https://web.archive.org/web/20110405132752/http://dev.opera.com/articles/view/opera-supports-webm-video/ |dead-url=no }}</ref>和[[Google Chrome]]<ref>{{citation |url=http://blog.chromium.org/2010/05/webm-and-vp8-land-in-chromium.html |title=WebM and VP8 land in Chromium |date=2010-05-19 |first=Jim |last=Bankoski |publisher=Google |accessdate=2010-06-12 |archive-date=2010-05-21 |archive-url=https://web.archive.org/web/20100521042942/http://blog.chromium.org/2010/05/webm-and-vp8-land-in-chromium.html |dead-url=no }}</ref>。另外微軟也宣布，只要在本地安装了[[VP8]]编解码器，[[Internet Explorer 9]]也能支援WebM文件格式<ref>{{citation |url=http://blogs.msdn.com/ie/archive/2010/05/19/another-follow-up-on-html5-video-in-ie9.aspx |title=Another Follow-up on HTML5 Video in IE9 |date=2010-05-19 |first=Dean |last=Hachamovitch |authorlink=Dean Hachamovitch |publisher=Microsoft |accessdate=2010-05-20 |archive-date=2010-05-22 |archive-url=https://web.archive.org/web/20100522114814/http://blogs.msdn.com/ie/archive/2010/05/19/another-follow-up-on-html5-video-in-ie9.aspx |dead-url=no }}</ref><ref>{{Cite web |url=http://tools.google.com/dlpage/webmmf |title=WebM for IE9 |accessdate=2011-08-25 |publisher=Google |date=2011-03-15 |archive-date=2022-01-14 |archive-url=https://web.archive.org/web/20220114155207/https://tools.google.com/dlpage/webmmf }}</ref>。2015年9月，微软宣布[[Windows 10]]自带的[[Microsoft Edge|Edge]]将支持WebM<ref>{{Cite web|url = http://xiphmont.livejournal.com/67752.html|title = Comments on the Alliance for Open Media, or, "Oh Man, What a Day"|author = Monty Montgomery|date = 2 September 2015|accessdate = 2015-09-02|archive-date = 2019-04-20|archive-url = https://web.archive.org/web/20190420144907/https://xiphmont.livejournal.com/67752.html}}</ref>。2021 年，苹果发布了适用于macOS的Safari 14.1，为浏览器添加了原生WebM支持。<ref>{{Cite web|last=avis|date=2021-04-29|title=New WebKit Features in Safari 14.1|url=https://webkit.org/blog/11648/new-webkit-features-in-safari-14-1/|access-date=2021-05-06|website=WebKit|archive-date=May 6, 2021|archive-url=https://web.archive.org/web/20210506200849/https://webkit.org/blog/11648/new-webkit-features-in-safari-14-1/|url-status=live}}</ref> 其后，苹果在[[iOS]] 15的Safari 15中加入了WebM支持。<ref>{{Cite web|title=Apple Developer Documentation|url=https://developer.apple.com/documentation/safari-release-notes/safari-15-beta-release-notes|access-date=2021-08-10|website=developer.apple.com|archive-date=August 22, 2021|archive-url=https://web.archive.org/web/20210822152038/https://developer.apple.com/documentation/safari-release-notes/safari-15-beta-release-notes|url-status=live}}</ref>

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[[Android]]从其2.3版本开始支持WebM格式<ref>{{citation |url=http://developer.android.com/sdk/android-2.3-highlights.html|title=Android 2.3 Platform Highlights }}</ref>。[[羅技]]計畫使用WebM做為其[[視訊通信]]服務的一部分<ref>{{citation |url=http://blog.logitech.com/2010/05/19/commitment-to-open-standards-such-as-vp8/ |title=Commitment to Open Standards such as VP8 is Critical to Innovation |publisher=Logitech |first=Eric |last=Kintz |date=2010-05-19}}</ref>。


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[[VLC]]<ref>{{citation |url=http://people.videolan.org/~jb/webm/ |title=Welcome to VLC's Webm page! |first=Jean-Baptiste |last=Kempf |publisher=VideoLAN |accessdate=2010-06-12 |archive-date=2010-11-24 |archive-url=https://web.archive.org/web/20101124231622/http://people.videolan.org/~jb/webm/ |dead-url=no }}</ref><ref>{{citation |url=http://www.kabatology.com/05/26/download-vlc-media-player-1-1-0-with-webm-support/ |title=Download VLC Media Player 1.1.0 with WebM Support |date=2010-05-26 |publisher=Kabatology |first=Martin |last=Kaba |accessdate=2010-06-12 |archive-date=2011-02-06 |archive-url=https://web.archive.org/web/20110206051213/http://www.kabatology.com/05/26/download-vlc-media-player-1-1-0-with-webm-support/ |dead-url=no }}</ref>、[[Miro]]<ref>{{citation |url=http://www8.getmiro.com/blog/2010/05/miro-video-converter-is-the-first-webm-vp8-converter/ |title=Miro Video Converter is the first WebM / VP8 converter! |date=2010-05-21 |publisher=Participatory Culture Foundation |first=Nicholas |last=Reville |deadurl=yes |archiveurl=https://web.archive.org/web/20100606044836/http://www8.getmiro.com/blog/2010/05/miro-video-converter-is-the-first-webm-vp8-converter/ |archivedate=2010-06-06 |accessdate=2010-06-12 }}</ref><ref>{{citation |url=http://www.kabatology.com/05/21/miro-video-converter-2-0-adds-support-for-open-webm-vp8-video-format/ |title=Miro Video Converter 2.0 adds support for open WebM（vp8）video format |date=2010-05-21 |publisher=Kabatology |first=Martin |last=Kaba |accessdate=2010-06-12 |archive-date=2011-07-13 |archive-url=https://web.archive.org/web/20110713133443/http://www.kabatology.com/05/21/miro-video-converter-2-0-adds-support-for-open-webm-vp8-video-format/ |dead-url=no }}</ref>和[[Moovida]]<ref>{{citation |url=http://www.kabatology.com/05/22/moovida-media-player-now-supports-webm-vp8-video-format/ |title=Moovida Media Player now supports WebM（VP8）Video format |date=2010-05-22 |publisher=Kabatology |first=Martin |last=Kaba |accessdate=2010-06-12 |archive-date=2011-07-13 |archive-url=https://web.archive.org/web/20110713133755/http://www.kabatology.com/05/22/moovida-media-player-now-supports-webm-vp8-video-format/ |dead-url=no }}</ref>等播放器也已宣布會支援。另外，[[Adobe Systems|Adobe]]已宣布[[Adobe Flash Player]]将在未来支援VP8，但還沒有宣布會支援Vorbis或WebM<ref name="webm-release"/><ref>{{citation |url=http://blogs.adobe.com/flashplatform/2010/05/adobe_support_for_vp8.html |title=Flash Player Will Support VP8 |date=2010-05-19 |publisher=Adobe |first=Matt |last=Rozen |deadurl=yes |archiveurl=https://web.archive.org/web/20111108072045/http://blogs.adobe.com/flashplatform/2010/05/adobe_support_for_vp8.html |archivedate=2011-11-08 |accessdate=2010-06-12 }}</ref>。
[[Chromium]] r47760和更新的版本, [[Google Chrome]] 6以及新版，[[Opera]] 10.60以及新版, [[Mozilla Firefox]] 4以及更新的版本已经支持WebM。


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[[Android]]从其2.3版本开始支持WebM格式<ref>{{citation |url=http://developer.android.com/sdk/android-2.3-highlights.html |title=Android 2.3 Platform Highlights |deadurl=yes |archiveurl=https://web.archive.org/web/20101210235053/http://developer.android.com/sdk/android-2.3-highlights.html |archivedate=2010-12-10 |accessdate=2011-03-06 }}</ref>。[[羅技]]計畫使用WebM做為其[[視訊通信]]服務的一部分<ref>{{citation |url=http://blog.logitech.com/2010/05/19/commitment-to-open-standards-such-as-vp8/ |title=Commitment to Open Standards such as VP8 is Critical to Innovation |publisher=Logitech |first=Eric |last=Kintz |date=2010-05-19 |accessdate=2010-06-12 |archive-date=2010-11-24 |archive-url=https://web.archive.org/web/20101124212937/http://blog.logitech.com/2010/05/19/commitment-to-open-standards-such-as-vp8/ |dead-url=no }}</ref>。
另外微軟也宣布，只要在本地安装了[[VP8]]编解码器，[[Internet Explorer 9]]也能支援WebM文件格式<ref>{{citation |url=http://blogs.msdn.com/ie/archive/2010/05/19/another-follow-up-on-html5-video-in-ie9.aspx |title=Another Follow-up on HTML5 Video in IE9 |date=2010-05-19 |first=Dean |last=Hachamovitch |authorlink=Dean Hachamovitch |publisher=Microsoft}}</ref><ref>{{Cite web |url=http://tools.google.com/dlpage/webmmf |title=WebM for IE9 |accessdate=2011-08-25 |publisher=Google |date=2011-03-15 }}</ref>。


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[[超微半導體|AMD]]、[[安謀國際科技|ARM]]和[[博通]]等硬體製造商宣布他們有興趣支援WebM的[[硬體加速]]<ref>{{citation |url=http://www.theregister.co.uk/2010/05/19/google_chrome_announcement/ |title=Google open sources $124.6m video codec |first=Cade |last=Metz |date=2010-05-19 |publisher=The Register |accessdate=2010-06-12 |archive-date=2010-12-24 |archive-url=https://web.archive.org/web/20101224201153/http://www.theregister.co.uk/2010/05/19/google_chrome_announcement/ |dead-url=no }}</ref><ref>{{citation |url=http://investor.broadcom.com/releasedetail.cfm?ReleaseID=471536 |title=Broadcom Accelerates WebM Video on Mobile Phones |date=2010-05-19 |publisher=Newswire |accessdate=2010-06-12 |archive-date=2011-07-08 |archive-url=https://web.archive.org/web/20110708094806/http://investor.broadcom.com/releasedetail.cfm?ReleaseID=471536 |dead-url=no }}</ref>。[[Intel]]也考慮，若WebM能得到大眾接受的話，會在其電視晶片上支援WebM的硬體加速<ref>{{citation |url=http://www.computerworld.com/s/article/9177437/Intel_eyes_hardware_acceleration_for_Google_s_WebM |title=Intel eyes hardware acceleration for Google's WebM |date=2010-05-27 |publisher=ComputerWorld |first=Agam |last=Shah |accessdate=2010-06-12 |archive-date=2011-02-14 |archive-url=https://web.archive.org/web/20110214053404/http://www.computerworld.com/s/article/9177437/Intel_eyes_hardware_acceleration_for_Google_s_WebM |dead-url=no }}</ref>。[[高通公司]]和[[德州儀器]]也宣布會支援<ref>{{citation |url=http://www.qualcomm.com/blog/2010/05/19/web-video-google |title=Google's Impact on Web Video |publisher=Qualcomm |date=2010-05-19 |first=Raj |last=Talluri |accessdate=2010-06-12 |archive-date=2011-09-27 |archive-url=https://web.archive.org/web/20110927054057/http://www.qualcomm.com/blog/2010/05/19/web-video-google |dead-url=no }}</ref><ref>{{citation |url=http://e2e.ti.com/blogs_/b/mobile_momentum/archive/2010/05/19/our-omap-processors-embrace-webm-and-vp8-with-open-arms.aspx |title=Our OMAP processors embrace WebM and VP8 with open ARMs |publisher=Texas Instruments |date=2010-05-19 |first=Joseph |last=Meehan |accessdate=2010-06-12 |archive-date=2011-05-14 |archive-url=https://web.archive.org/web/20110514230749/http://e2e.ti.com/blogs_/b/mobile_momentum/archive/2010/05/19/our-omap-processors-embrace-webm-and-vp8-with-open-arms.aspx |dead-url=no }}</ref>。
===硬體===
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[[超微半導體|AMD]]、[[安謀國際科技|ARM]]和[[博通]]等硬體製造商宣布他們有興趣支援WebM的[[硬體加速]]<ref>{{citation |url=http://www.theregister.co.uk/2010/05/19/google_chrome_announcement/ |title=Google open sources $124.6m video codec |first=Cade |last=Metz |date=2010-05-19 |publisher=The Register}}</ref><ref>{{citation |url=http://investor.broadcom.com/releasedetail.cfm?ReleaseID=471536 |title=Broadcom Accelerates WebM Video on Mobile Phones |date=2010-05-19 |publisher=Newswire}}</ref>。[[Intel]]也考慮，若WebM能得到大眾接受的話，會在其電視晶片上支援WebM的硬體加速<ref>{{citation |url=http://www.computerworld.com/s/article/9177437/Intel_eyes_hardware_acceleration_for_Google_s_WebM |title=Intel eyes hardware acceleration for Google's WebM |date=2010-05-27 |publisher=ComputerWorld |first=Agam |last=Shah}}</ref>。[[高通公司]]和[[德州儀器]]也宣布會支援<ref>{{citation |url=http://www.qualcomm.com/blog/2010/05/19/web-video-google |title=Google's Impact on Web Video |publisher=Qualcomm |date=2010-05-19 |first=Raj |last=Talluri}}</ref><ref>{{citation |url=http://e2e.ti.com/blogs_/b/mobile_momentum/archive/2010/05/19/our-omap-processors-embrace-webm-and-vp8-with-open-arms.aspx |title=Our OMAP processors embrace WebM and VP8 with open ARMs |publisher=Texas Instruments |date=2010-05-19 |first=Joseph |last=Meehan}}</ref> 。


==参见==
==参见==
*[[H.264/MPEG-4 AVC]]
*[[H.264/MPEG-4 AVC]]
*[[On2 Technologies]]
*[[On2 Technologies]]
*[[VP8]]、[[VP9]]
*[[VP8]]、[[VP9]]、[[AOMedia Video 1|AV1]]
*[[WebP]]
*[[WebP]]
*[[Theora]]


==参考==
== 参考文献 ==
{{reflist}}
{{Reflist|30em}}


==外部链接==
==外部链接==
* [http://www.webmproject.org/ 官方网站]
* [http://www.webmproject.org/ 官方网站] {{Wayback|url=http://www.webmproject.org/ |date=20110214193716 }}
* [http://www.webmproject.org/code/specs/container/ WebM Container Guidelines]
* [http://www.webmproject.org/code/specs/container/ WebM Container Guidelines] {{Wayback|url=http://www.webmproject.org/code/specs/container/ |date=20110214193716 }}
* [http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ Open Web, Open Video and WebM]
* [http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ Open Web, Open Video and WebM] {{Wayback|url=http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ |date=20110511202812 }}
* [http://dev.opera.com/articles/view/opera-supports-webm-video/ Opera supports the WebM video format]
* [http://dev.opera.com/articles/view/opera-supports-webm-video/ Opera supports the WebM video format] {{Wayback|url=http://dev.opera.com/articles/view/opera-supports-webm-video/ |date=20110405132752 }}


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[[Category:视频编解码器]]
[[Category:视频编解码器]]
[[Category:开放源代码]]
[[Category:开放源代码]]
[[Category:視頻通訊]]

2023年12月30日 (六) 13:25的最新版本

WebM
扩展名
.webm
互联网媒体类型
video/webm
audio/webm
开发者Google
首次发布2010年5月19日[1]
格式类型视频文件格式
作为容器VP8、VP9、AV1（视频）
Vorbis、Opus（音频）
扩展自Matroska子集
免费格式？是[2]
网站The WebM Project

WebM是一个由Google资助的專案，目標是构建一个开放的、免版權費用的视频文件格式。该视频文件格式应能提供高品質的视频压缩以配合HTML5使用。

WebM项目是一个使用BSD许可证的开源项目。它采用了On2 Technologies开发的VP8及其后续版本VP9视频编解码器和Xiph.Org基金会开发的Vorbis、Opus音频编解码器，使用的封装格式则以Matroska格式為基礎[2][3][4]。

WebM 视频

Apple公司在macOS Big Sur 11.3的Safari中，加入了对Google WebM影片编解码器的支持。

支援

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WebM项目是在2010年的Google I/O会议上发布的，之中宣布將會支援WebM的網頁瀏覽器有Mozilla Firefox[5][6]、Opera[7][8]和Google Chrome[9]。另外微軟也宣布，只要在本地安装了VP8编解码器，Internet Explorer 9也能支援WebM文件格式[10][11]。2015年9月，微软宣布Windows 10自带的Edge将支持WebM[12]。2021 年，苹果发布了适用于macOS的Safari 14.1，为浏览器添加了原生WebM支持。[13] 其后，苹果在iOS 15的Safari 15中加入了WebM支持。[14]

VLC[15][16]、Miro[17][18]和Moovida[19]等播放器也已宣布會支援。另外，Adobe已宣布Adobe Flash Player将在未来支援VP8，但還沒有宣布會支援Vorbis或WebM[1][20]。

Android从其2.3版本开始支持WebM格式[21]。羅技計畫使用WebM做為其視訊通信服務的一部分[22]。

AMD、ARM和博通等硬體製造商宣布他們有興趣支援WebM的硬體加速[23][24]。Intel也考慮，若WebM能得到大眾接受的話，會在其電視晶片上支援WebM的硬體加速[25]。高通公司和德州儀器也宣布會支援[26][27]。

参见

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参考文献

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  1. ^ 1.0 1.1 Patel, Nilay, Google launches open WebM web video format based on VP8, Engadget, 2010-05-19 [2010-05-20], （原始内容存档于2011-06-04） 
  2. ^ 2.0 2.1 WebM FAQ. 19 May 2010 [2018-09-01]. （原始内容存档于2021-09-22）. WebM is an open media file format designed for the web. WebM files consist of video streams compressed with the VP8 video codec and audio streams compressed with the Vorbis audio codec. The WebM file structure is based on the Matroska media container. 
  3. ^ Doig, Jeremy; Jazayeri, Mike, Introducing WebM, an open web media project, WebM Project, 19 May 2010 [19 May 2010], （原始内容存档于2012-04-26） 
  4. ^ Montgomery, Chris, Xiph.Org announces support for the WebM open media project, Xiph, 19 May 2010 [20 May 2010], （原始内容存档于2011-02-22） 
  5. ^ Shaver, Mike, Open Web, Open Video and WebM, Mozilla, 2010-05-19 [2010-05-20], （原始内容存档于2011-05-11） 
  6. ^ Blizzard, Christopher, Firefox, YouTube and WebM, Mozilla, 2010-05-19 [2010-06-12], （原始内容存档于2011-01-31） 
  7. ^ Lie, Håkon Wium, Welcome, WebM <video>!, Opera, 2010-05-19 [2010-06-12], （原始内容存档于2011-03-21） 
  8. ^ Mills, Chris, Opera supports the WebM video format, Opera, 2010-05-19 [2010-05-20], （原始内容存档于2011-04-05） 
  9. ^ Bankoski, Jim, WebM and VP8 land in Chromium, Google, 2010-05-19 [2010-06-12], （原始内容存档于2010-05-21） 
  10. ^ Hachamovitch, Dean, Another Follow-up on HTML5 Video in IE9, Microsoft, 2010-05-19 [2010-05-20], （原始内容存档于2010-05-22） 
  11. ^ WebM for IE9. Google. 2011-03-15 [2011-08-25]. （原始内容存档于2022-01-14）. 
  12. ^ Monty Montgomery. Comments on the Alliance for Open Media, or, "Oh Man, What a Day". 2 September 2015 [2015-09-02]. （原始内容存档于2019-04-20）. 
  13. ^ avis. New WebKit Features in Safari 14.1. WebKit. 2021-04-29 [2021-05-06]. （原始内容存档于May 6, 2021）. 
  14. ^ Apple Developer Documentation. developer.apple.com. [2021-08-10]. （原始内容存档于August 22, 2021）. 
  15. ^ Kempf, Jean-Baptiste, Welcome to VLC's Webm page!, VideoLAN, [2010-06-12], （原始内容存档于2010-11-24） 
  16. ^ Kaba, Martin, Download VLC Media Player 1.1.0 with WebM Support, Kabatology, 2010-05-26 [2010-06-12], （原始内容存档于2011-02-06） 
  17. ^ Reville, Nicholas, Miro Video Converter is the first WebM / VP8 converter!, Participatory Culture Foundation, 2010-05-21 [2010-06-12], （原始内容存档于2010-06-06） 
  18. ^ Kaba, Martin, Miro Video Converter 2.0 adds support for open WebM（vp8）video format, Kabatology, 2010-05-21 [2010-06-12], （原始内容存档于2011-07-13） 
  19. ^ Kaba, Martin, Moovida Media Player now supports WebM（VP8）Video format, Kabatology, 2010-05-22 [2010-06-12], （原始内容存档于2011-07-13） 
  20. ^ Rozen, Matt, Flash Player Will Support VP8, Adobe, 2010-05-19 [2010-06-12], （原始内容存档于2011-11-08） 
  21. ^ Android 2.3 Platform Highlights, [2011-03-06], （原始内容存档于2010-12-10） 
  22. ^ Kintz, Eric, Commitment to Open Standards such as VP8 is Critical to Innovation, Logitech, 2010-05-19 [2010-06-12], （原始内容存档于2010-11-24） 
  23. ^ Metz, Cade, Google open sources $124.6m video codec, The Register, 2010-05-19 [2010-06-12], （原始内容存档于2010-12-24） 
  24. ^ Broadcom Accelerates WebM Video on Mobile Phones, Newswire, 2010-05-19 [2010-06-12], （原始内容存档于2011-07-08） 
  25. ^ Shah, Agam, Intel eyes hardware acceleration for Google's WebM, ComputerWorld, 2010-05-27 [2010-06-12], （原始内容存档于2011-02-14） 
  26. ^ Talluri, Raj, Google's Impact on Web Video, Qualcomm, 2010-05-19 [2010-06-12], （原始内容存档于2011-09-27） 
  27. ^ Meehan, Joseph, Our OMAP processors embrace WebM and VP8 with open ARMs, Texas Instruments, 2010-05-19 [2010-06-12], （原始内容存档于2011-05-14） 

外部链接

[编辑]
检索自“https://zh.wikipedia.org/w/index.php?title=WebM&oldid=80298860”