WebM explained

Extension:.webm
Mime:video/webm,
audio/webm
Owner:Initially On2, Xiph, and Matroska; later Google
Latest Release Version:v1.13.0[1]
Type:Container format
Extended From:Limited subset of Matroska
Container For:VP8/VP9/AV1 (video)
Vorbis/Opus (audio)
Open:Yes
Free:Yes[2]

WebM is an audiovisual media file format.[3] It is primarily intended to offer a royalty-free alternative to use in the HTML video and the HTML audio elements. It has a sister project, WebP, for images. The development of the format is sponsored by Google, and the corresponding software is distributed under a BSD license.

The WebM container is based on a profile of Matroska.[4] WebM initially supported VP8 video and Vorbis audio streams. In 2013, it was updated to accommodate VP9 video and Opus audio.[5] It also supports the new AV1 codec.[6]

Vendor support

Software

Native WebM support by Mozilla Firefox,[7] [8] Opera,[9] [10] and Google Chrome[11] was announced at the 2010 Google I/O conference. Internet Explorer 9 requires third-party WebM software.[12] In 2021, Apple released Safari 14.1 for macOS, which added native WebM support to the browser.[13], QuickTime does not natively support WebM,[14] [15] but does with a suitable third-party plug-in.[16] In 2011, the Google WebM Project Team released plugins for Internet Explorer and Safari to allow playback of WebM files through the standard HTML5 <video> tag.[17], Internet Explorer 9 and later supported the plugin for Windows Vista and later.[18]

VLC media player, MPlayer, K-Multimedia Player and JRiver Media Center have native support for playing WebM files. FFmpeg can encode and decode VP8 videos when built with support for libvpx, the VP8/VP9 codec library of the WebM project, as well as mux/demux WebM-compliant files. On July 23, 2010 Fiona Glaser, Ronald Bultje, and David Conrad of the FFmpeg team announced the ffvp8 decoder. Their testing found that ffvp8 was faster than Google's own libvpx decoder. MKVToolNix, the popular Matroska creation tools, implemented support for multiplexing/demultiplexing WebM-compliant files out of the box. Haali Media Splitter also announced support for muxing/demuxing of WebM. Since version 1.4.9, the LiVES video editor has support for realtime decoding and for encoding to WebM format using ffmpeg libraries.

MPC-HC since build SVN 2071 supports WebM playback with internal VP8 decoder based on FFmpeg's code. The full decoding support for WebM is available in MPC-HC since version 1.4.2499.0.

Android is WebM-enabled since version 2.3 Gingerbread, which was first made available via the Nexus S smartphone and streamable since Android 4.0 Ice Cream Sandwich.[19]

The Microsoft Edge browser supports WebM since April 2016.[20]

On July 30, 2019, Blender 2.80 was released with WebM support.[21]

iOS did not natively play WebM originally,[22] but support for WebM was added in Safari 15 as part of iOS 15.[23]

The Sony PlayStation 5 supports capturing 1080p and 2160p footage in WebM format.[24]

ChromeOS screen recordings are saved as WebM files.[25]

Hardware

WebM Project licenses VP8 hardware accelerators (RTL IP) to semiconductor companies for 1080p encoding and decoding at zero cost. AMD, ARM and Broadcom have announced support for hardware acceleration of the WebM format. Intel is also considering hardware-based acceleration for WebM in its Atom-based TV chips if the format gains popularity. Qualcomm and Texas Instruments have announced support, with native support coming to the TI OMAP processor. Chips&Media have announced a fully hardware decoder for VP8 that can decode full HD resolution (1080p) VP8 streams at 60 frames per second.

Nvidia is supporting VP8 and provides both hardware decoding and encoding in the Tegra 4 and Tegra 4i SoCs.[26] Nvidia announced 3D video support for WebM through HTML5 and their Nvidia 3D Vision technology.

On January 7, 2011, Rockchip released the world's first chip to host a full hardware implementation of 1080p VP8 decoding. The video acceleration in the RK29xx chip is handled by the WebM Project's G-Series 1 hardware decoder IP.

In June 2011, ZiiLABS demonstrated their 1080p VP8 decoder implementation running on the ZMS-20 processor. The chip's programmable media processing array is used to provide the VP8 acceleration.

ST-Ericsson and Huawei also had hardware implementations in their computer chips.[27]

Licensing

The original WebM license terminated both patent grants and copyright redistribution terms if a patent infringement lawsuit was filed, causing concerns around GPL compatibility.In response to those concerns, the WebM Project decoupled the patent grant from the copyright grant, offering the code under a standard BSD license and patents under a separate grant. The Free Software Foundation, which maintains The Free Software Definition, has given its endorsement for WebM and VP8 and considers the software's license to be compatible with the GNU General Public License.[28] [29] On January 19, 2011, the Free Software Foundation announced its official support for the WebM project.[30] In February 2011, Microsoft's Vice President of Internet Explorer called upon Google to provide indemnification against patent suits.[31]

Although Google has irrevocably released all of its patents on VP8 as a royalty-free format, the MPEG LA, licensors of the H.264 patent pool, have expressed interest in creating a patent pool for VP8. Conversely, other researchers cite evidence that On2 made a particular effort to avoid any MPEG LA patents. As a result of the threat, the United States Department of Justice (DOJ) started an investigation in March 2011 into the MPEG LA for its role in possibly attempting to stifle competition.[32] In March 2013, MPEG LA announced that it had reached an agreement with Google to license patents that "may be essential" for the implementation of the VP8 codec, and give Google the right to sub-license these patents to any third-party user of VP8 or VP9.[33] [34]

In March 2013, Nokia filed an objection to the Internet Engineering Task Force concerning Google's proposal for the VP8 codec to be a core part of WebM, saying it holds essential patents to VP8's implementation.[35] Nokia listed 64 patents and 22 pending applications, adding it was not prepared to license any of them for VP8.[36] On August 5, 2013, a court in Mannheim, Germany, ruled that VP8 does not infringe a patent owned and asserted by Nokia.[37]

See also

External links

Notes and References

  1. Web site: Release 2023-01-31 v1.13.0 "Ugly Duckling". January 31, 2023. github.com. April 15, 2020.
  2. Library of Congress . Washington, D.C. . Sustainability of Digital Formats . Partial draft . WebM . 19 August 2020 . 1 December 2021 . December 14, 2021 . https://web.archive.org/web/20211214191839/https://www.loc.gov/preservation/digital/formats/fdd/fdd000518.shtml . live .
  3. Web site: The WebM Project – About WebM. webmproject.org. August 13, 2016. August 15, 2016. https://web.archive.org/web/20160815201726/http://www.webmproject.org/about/. live.
  4. Web site: WebM FAQ . May 19, 2010 . 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. . August 13, 2016 . September 22, 2021 . https://web.archive.org/web/20210922124446/https://www.webmproject.org/about/faq/ . live .
  5. Web site: The WebM Open Media Project Blog: VP9 Lands in Chrome Dev Channel. webmproject.org. November 16, 2013. July 6, 2013. https://web.archive.org/web/20130706014103/http://blog.webmproject.org/2013/07/vp9-lands-in-chrome-dev-channel.html. live.
  6. Web site: Media container formats (file types) - Web media technologies MDN . 2023-01-15 . developer.mozilla.org . en-US.
  7. Web site: Open Web, Open Video and WebM . The Mozilla Blog . . May 19, 2010 . March 8, 2011 . Mike . Shaver . Mike Shaver . May 11, 2011 . https://web.archive.org/web/20110511202812/http://blog.mozilla.com/blog/2010/05/19/open-web-open-video-and-webm/ . live .
  8. Web site: Firefox, YouTube and WebM . Mozilla Hacks . Mozilla Foundation . Christopher . Blizzard . Christopher Blizzard . May 19, 2010 . March 8, 2011 . March 2, 2011 . https://web.archive.org/web/20110302144357/http://hacks.mozilla.org/2010/05/firefox-youtube-and-webm/ . live .
  9. Web site: Welcome, WebM <video>! . Opera Labs . Opera Software ASA . Håkon Wium . Lie . Håkon Wium Lie . May 19, 2010 . March 8, 2011 . dead . https://web.archive.org/web/20110321150357/http://labs.opera.com/news/2010/05/19/ . March 21, 2011 . dmy-all.
  10. Web site: Opera supports the WebM video format . Dev.Opera . Opera Software ASA . May 19, 2010 . March 8, 2011 . Chris . Mills . On the day of the announcement, Opera released an experimental WebM-enabled build. This feature is now part of the core functionality of Opera 10.60 and all of our future desktop browser releases. . April 5, 2011 . https://web.archive.org/web/20110405132752/http://dev.opera.com/articles/view/opera-supports-webm-video/ . live .
  11. Web site: WebM and VP8 land in Chromium . The Chromium Blog . Google Inc. . May 19, 2010 . March 8, 2011 . Jim . Bankoski . May 11, 2011 . https://web.archive.org/web/20110511040643/http://blog.chromium.org/2010/05/webm-and-vp8-land-in-chromium.html . live .
  12. Web site: HTML5 Video Update—WebM for IE9 . IEBlog . Microsoft Corporation . March 16, 2011 . March 16, 2011 . Dean . Hachamovitch . IE9 supports HTML5 video using WebM for Windows customers who install third-party WebM support. As an industry, we still face many legitimate, unanswered questions about liability, risks, and support for WebM... . March 18, 2011 . https://web.archive.org/web/20110318072356/http://blogs.msdn.com/b/ie/archive/2011/03/16/html5-video-update-webm-for-ie9.aspx . live .
  13. Web site: avis. 2021-04-29. New WebKit Features in Safari 14.1. 2021-05-06. WebKit. May 6, 2021. https://web.archive.org/web/20210506200849/https://webkit.org/blog/11648/new-webkit-features-in-safari-14-1/. live.
  14. Web site: Apple – QuickTime – QuickTime Player – Tech Specs . April 15, 2010 . https://web.archive.org/web/20080724002332/http://www.apple.com/quicktime/player/specs.html . July 24, 2008.
  15. Web site: Media formats supported by QuickTime Player in Mac OS X v10.6 . Apple Support . Apple Inc . January 28, 2011 . April 1, 2011 . September 7, 2011 . https://web.archive.org/web/20110907073400/http://support.apple.com/kb/HT3775 . live .
  16. Web site: Adding additional media format support to QuickTime . Apple Support . Apple Inc . January 24, 2011 . April 1, 2011 . February 11, 2011 . https://web.archive.org/web/20110211005821/http://support.apple.com/kb/HT3526 . live .
  17. Web site: More about the Chrome HTML Video Codec Change . The Chromium Blog . Google Inc . January 14, 2011 . March 8, 2011 . Mike . Jazayeri . the WebM Project team will soon release plugins that enable WebM support in Safari and IE9 via the HTML standard
  18. Web site: WebM Media Foundation Components for Microsoft Internet Explorer . WebMProject.org . The WebM Project . February 15, 2018 . May 23, 2018 . https://web.archive.org/web/20180523122836/https://www.webmproject.org/ie/ . dead .
  19. Web site: Supported Media Formats – Android Developers. developer.android.com. January 24, 2013. December 20, 2016. https://web.archive.org/web/20161220161956/https://developer.android.com/guide/appendix/media-formats.html. live.
  20. Web site: WebM, VP9 and Opus Support in Microsoft Edge . blogs.windows.com . 2016-04-18 . 2023-02-25.
  21. Web site: Reference/Release Notes/2.80/Import Export - Blender Developer Wiki. wiki.blender.org. 2019-08-04. July 11, 2019. https://web.archive.org/web/20190711092829/https://wiki.blender.org/wiki/Reference/Release_Notes/2.80/Import_Export. live.
  22. Web site: Steve Jobs says no to Google's VP8 WebM codec. AppleInsider. May 21, 2010 . January 2, 2016. en-US. March 4, 2016. https://web.archive.org/web/20160304060232/http://appleinsider.com/articles/10/05/20/steve_jobs_says_no_to_googles_vp8_webm_codec. live.
  23. Web site: Apple Developer Documentation. 2021-08-10. developer.apple.com. August 22, 2021. https://web.archive.org/web/20210822152038/https://developer.apple.com/documentation/safari-release-notes/safari-15-beta-release-notes. dead.
  24. Web site: How to change PS5 video capture formats. Android Central. November 16, 2020. April 15, 2021. en-US. April 15, 2021. https://web.archive.org/web/20210415225827/https://www.androidcentral.com/how-change-ps5-video-capture-formats. live.
  25. Web site: How to record your Chromebook screen with audio and convert it to MP4. Dan. Millward. February 3, 2022. Chrome Computing.
  26. Web site: Tegra 4 GPU Whitepaper. Nvidia. March 10, 2015. April 30, 2015. https://web.archive.org/web/20150430060602/http://www.nvidia.com/docs/IO/116757/Tegra_4_GPU_Whitepaper_FINALv2.pdf. live.
  27. Web site: WebM Gaining Momentum in Hardware . Aki Kuusela . March 29, 2012 . WebM Hardware Team . December 12, 2012 . January 3, 2013 . https://web.archive.org/web/20130103125930/http://blog.webmproject.org/2012/03/webm-gaining-momentum-in-hardware.html . live .
  28. Web site: Google's updated WebM license . Free Software Foundation . Brett . Smith . June 14, 2010 . June 7, 2010 . https://web.archive.org/web/20100607031023/http://www.fsf.org/blogs/licensing/googles-updated-webm-license . live .
  29. Web site: Various Licenses and Comments about Them – GNU Project – Free Software Foundation (FSF) . Free Software Foundation . June 13, 2010 . July 24, 2010 . https://web.archive.org/web/20100724023833/https://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses . live .
  30. Web site: No double standards: supporting Google's push for WebM . Free Software Foundation . Brett . Smith . January 19, 2011 . January 21, 2011 . https://web.archive.org/web/20110121201447/http://www.fsf.org/news/supporting-webm . live .
  31. Web site: HTML5 and Web Video: Questions for the Industry from the Community . February 2, 2011 . February 22, 2011 . February 20, 2011 . https://web.archive.org/web/20110220153727/http://blogs.msdn.com/b/ie/archive/2011/02/02/html5-and-web-video-questions-for-the-industry-from-the-community.aspx . live .
  32. Web site: Report: DoJ looking into possible anti-WebM moves by MPEG LA . Jacqui . Cheng . . . March 4, 2011 . March 8, 2011 . March 8, 2011 . https://web.archive.org/web/20110308023113/http://arstechnica.com/tech-policy/news/2011/03/report-doj-looking-into-possible-anti-webm-moves-by-mpeg-la.ars . live .
  33. Web site: Google and MPEG LA make a deal over VP8 codec – Update. The H. March 10, 2013. December 8, 2013. https://web.archive.org/web/20131208040459/http://www.h-online.com/open/news/item/Google-and-MPEG-LA-make-a-deal-over-VP8-codec-Update-1818785.html. live.
  34. Web site: Google and MPEG LA Announce Agreement Covering VP8 Video Format . March 7, 2013 . March 8, 2013 . March 5, 2016 . https://web.archive.org/web/20160305123623/http://www.mpegla.com/Lists/MPEG%20LA%20News%20List/Attachments/88/n-13-03-07.pdf . dead .
  35. News: Nokia and Google clash on web video tech . March 25, 2013 . April 5, 2013 . BBC News . March 28, 2013 . https://web.archive.org/web/20130328070016/http://www.bbc.co.uk/news/technology-21922814 . live .
  36. Web site: Nokia Corporation's Statement about IPR related to RFC 6386 . March 21, 2013 . April 5, 2013 . March 24, 2013 . https://web.archive.org/web/20130324032227/http://datatracker.ietf.org/ipr/2035/ . live .
  37. Web site: The WebM Open Media Project Blog: Good News from Germany. webmproject.org. August 28, 2013. August 23, 2013. https://web.archive.org/web/20130823071748/http://blog.webmproject.org/2013/08/good-news-from-germany.html. live.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "WebM".

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