Comparison of layout engines (HTML5 media) Telecommunication Engineering 464 pasar.pts-ptn.net

HTML and HTML5; HTML editor
Dynamic HTML
XHTML
- XHTML Basic (Mobile)
- XHTML Mobile Profile and C-HTML
HTML element
Character encodings; Unicode
Language code
Document Object Model
Browser Object Model
Style sheets and CSS
Font family and Web colors
HTML scripting and JavaScript
W3C, WHATWG, and validator
Quirks mode
HTML Frames
HTML5 Canvas, WebGL, and WebCL
HTML5 Audio and HTML5 video
Web storage
Web browser (layout) engine
Comparison of
- document markup languages
- web browsers
- layout engine support for
  - HTML;　Non-standard HTML
  - XHTML (1.1)
  - HTML5; HTML5 canvas,
    - HTML5 media　(Audio, Video)

The HTML5 draft specification defines several tags which allow video and audio to be included natively and semantically in HTML markup. This page compares support for aspects of this specification among layout engines.

1 Explanation of the tables
- 1.1 Engine nomenclature
- 1.2 Values
2 Element attributes
3 DOM attributes
4 DOM events
5 Video format support
6 Audio format support
7 See also
8 Notes
9 References
10 External links

Explanation of the tables

Engine nomenclature

Rather than the names of web browsers, the names of the underlying engines are used. The browsers that use the various engines are listed below.

Layout engine	Release version	Preview version	Used by
Amaya	11.3.1	11.3-pre	Amaya
Gecko	19.0	20.0	All Mozilla software, including Firefox; SeaMonkey and Galeon; Camino; K-Meleon; Flock (up to 2.x); Debian IceWeasel; GNU IceCat (formerly GNU IceWeasel); Icedove, Iceape and Iceowl; Fennec. Also used by the Maple platform in 2010 and 2011 Samsung "SmartTV" devices which are based on the build used in Firefox 3.0.
KHTML		N/A	Konqueror^†
Presto	2.10.229	2.10.238	Opera; Opera Mobile, Nintendo DS & DSi Browser; Internet Channel
Tasman	(IE 5.2.3 for Mac)	none (aborted in 2003)	Internet Explorer 5+ for Mac OS X
Trident	6.0 (IE 10)	6.0 (IE 10)	Internet Explorer and other Internet Explorer shells like Maxthon (Microsoft Windows operating systems only), Windows Phone 8
WebKit	534.20	r146740	Tizen (both OS and browser), Safari (both desktop and mobile), Google Chrome, Maxthon 3, Shiira, iCab 4, OmniWeb 5.5+, Web, Adobe AIR, Midori, Adobe Dreamweaver CS4 and CS5, Android browser, Palm webOS browser, Symbian S60 browser, OWB, Steam, Rekonq, Arora, Flock (version 3+), RockMelt, Dolphin Browser, Sleipnir, Konqueror^†, rekonq. Used by the LG Smart TV platform to enable web content on TVs.

^† In Konqueror, the user can switch layout engine.

Values

Values indicate the level of support in the most recent version of the layout engine, or (if a version number is given) in the specified version. Version numbers without any other value indicate the version at which the layout engine first fully supported the feature.

Value	Meaning
Yes	Indicates that the layout engine fully supports this property/element when valid values are used.
No	Indicates that the property/element is completely ignored.
Partial	Indicates that the property/element is understood, but that not all values are supported. Supported values are implemented correctly.
Incorrect	Indicates that the property/element is understood, but that it is not implemented correctly in all cases.
Experimental	Indicates that the property/element is understood, but supported under an alternate name. May be incomplete or buggy.
Dropped	Indicates that the property/element is no longer supported.
Nightly build	Indicates that the property/element is supported to some extent in an experimental/nightly build. Future support is expected.
Depends	Indicates that the property/element is supported only on certain platforms, or if certain settings are configured.

Element attributes

Media elements allow some attributes to be set directly in the tag.

	Trident	Gecko	WebKit	Presto
`<audio>` attributes
`src`	5.0^{[t 1]}	1.9.1	525	2.5
`preload`		2.0^{[note 1]}^{[g 1]}		Experimental^{[note 1]}
`autoplay`		1.9.1		2.5
`loop`		11.0^{[g 2]}
`controls`		1.9.1
`<video>` attributes
`src`	5.0^{[t 1]}	1.9.1	525	2.5
`preload`		2.0^{[note 1]}^{[g 1]}		Experimental^{[note 1]}
`autoplay`		1.9.1		2.5
`loop`		11.0^{[g 2]}
`controls`		1.9.1
`poster`		1.9.2^{[g 3]}
`width`		1.9.1
`height`		1.9.1
`<source>` attributes
`src`	5.0^{[t 1]}	1.9.1	525^{[w 1]}	2.5
`type`		1.9.1
`media`		15.0^{[g 4]}
`<track>` attributes
`kind`	6.0^{[t 2]}	No^{[g 5]}	Yes^{[w 2]}	No
`label`
`src`
`srclang`

DOM attributes

Some attributes related to media elements are exposed in the DOM.

	Trident	Gecko	WebKit	Presto^{[p 1]}
Error state
`MediaError`	5.0 ^{[t 3]}	1.9.1	?	2.5
Network state
`src`	5.0^{[t 1]}	1.9.1	?	2.5
`currentSrc`
`networkState`
`preload`		2.0^{[note 1]}^{[g 1]}		No
`buffered`		2.0^{[g 6]}		No
`load()`		1.9.1		2.5
`canPlayType()`		1.9.1	533^{[w 3]}	2.5
Ready state
`readyState`	5.0^{[t 1]}	1.9.1	?	2.5
`seeking`	5.0^{[t 1]}	1.9.1	?	2.5
Playback state
`currentTime`	5.0^{[t 1]}	1.9.1	?	2.5
`startTime`		No
`duration`		1.9.1
`paused`		1.9.1
`defaultPlaybackRate`		20.0^{[g 7]}		No
`playbackRate`		20.0^{[g 7]}
`played`		15.0^{[g 8]}
`seekable`		8.0^{[g 9]}
`ended`		1.9.1		2.5
`autoplay`		1.9.1
`loop`		11.0^{[g 2]}
`play()`		1.9.1
`pause()`		1.9.1
Controls
`controls`	5.0^{[t 1]}	1.9.1	?	2.5
`volume`
`muted`

DOM events

Media elements introduce new events to handle conditions which apply only to those elements, such as pausing/resuming.

	Trident	Gecko^{[g 10]}	WebKit	Presto
`loadstart`	5.0^{[t 4]}	1.9.1	?	?
`progress`		1.9.1
`suspend`		1.9.2
`abort`		1.9.1
`error`
`emptied`
`stalled`		8.0^{[g 11]}
`play`		1.9.1
`pause`
`loadedmetadata`
`loadeddata`
`waiting`
`playing`		No
`canplay`		1.9.1
`canplaythrough`
`seeking`
`seeked`
`timeupdate`
`ended`
`ratechange`
`durationchange`
`volumechange`

Video format support

This table documents support for video codecs by the <video> element.

	Trident	Gecko	WebKit	Presto
Ogg Theora	Manual install^{[note 2]}	1.9.1^{[g 12]}	Depends^{[note 3]}	2.5
H.264	5.0^{[t 7]}	No^{[g 13]}	Depends (525)^{[note 3]}^{[w 9]}	Depends^{[note 4]}
WebM VP8	Manual install^{[note 5]}^{[note 6]} ^{[note 7]}	2.0^{[g 14]}^{[g 15]}	Depends (534)^{[w 10]}	2.6.30^{[p 3]}^{[p 4]}^{[p 5]}

Audio format support

Main article: HTML5 Audio

This table documents support for audio codecs by the <audio> element.

	Trident	Gecko	WebKit	Presto
Ogg Vorbis	No	1.9.1^{[g 12]}	Depends^{[note 3]}	2.5
WAV PCM	No	1.9.1^{[g 12]}	525^{[note 3]}	2.0
MP3	5.0^{[t 11]}	No^{[g 16]}		Depends^{[note 4]}
AAC	5.0^{[t 11]}	No		Depends^{[note 4]}
Speex	No	No^{[g 17]}	Depends^{[note 3]}	No
Opus	No	15.0^{[g 18]}	Depends^{[note 3]}	No

Notes

^ ^a ^b ^c ^d ^e Supports preload under the older name autobuffer.
^ Supported if OpenCodecs is installed. Also possible with Google Chrome Frame^{[t 5]}^{[t 6]}
^ ^a ^b ^c ^d ^e ^f WebKit on Mac OS X uses QuickTime, and supports whatever formats that does.^{[w 4]} By default, this includes H.264, MP3, AAC and WAV PCM, but not Ogg Theora or Vorbis. These are supported only if installed as third-party codecs, such as XiphQT. Google Chrome supports Theora, Vorbis, WebM, and MP3.^{[w 5]} Chromium can be compiled to support anything that ffmpeg supports, and may or may not support patented formats such as H.264 and MP3.^{[w 6]} Origyn Web Browser for MorphOS uses also FFMpeg for playing HTML5 media content.^{[w 7]}^{[w 8]}
^ ^a ^b On Linux and FreeBSD, Presto 2.5 uses the system version of the GStreamer library, and is able to play any formats supported by GStreamer (including H.264, MP3, AAC and others, if codecs are installed). On other platforms, it only supports Ogg Theora for video; and Ogg Vorbis and WAVE PCM for sound.^{[p 2]}
^ Google released a WebM component for Media Foundation to allow the playback of WebM files in IE9 through the standard HTML5 <video> tag.^{[t 8]}
^ Possible if the user has installed a VP8 codec on Windows for IE9.^{[t 9]}
^ Internet Explorer 9 will support VP8 only if the appropriate codecs are installed on the user's computer.^{[t 10]}

References

Trident references

^ ^a ^b ^c ^d ^e ^f ^g Internet Explorer Platform Preview Guide for Developers, Microsoft, http://msdn.microsoft.com/en-us/ie/ff468705.aspx
^ track element, Microsoft, http://msdn.microsoft.com/en-us/library/ie/hh772556
^ MSDN HTMLMediaError Object for Internet Explorer 9, Microsoft, http://msdn.microsoft.com/en-us/library/gg130962(v=VS.85).aspx
^ , Microsoft, http://msdn.microsoft.com/en-us/library/ff975073
^ Kevin Carle and Chris Zacharias (2010-01-20), Introducing YouTube HTML5 Supported Videos, Official YouTube Blog, http://youtube-global.blogspot.com/2010/01/introducing-youtube-html5-supported.html, retrieved 2010-03-12
^ Dougherty, Brad (2010-01-21), Try our new HTML5 player!, Vimeo Staff Blog, http://vimeo.com/blog:268, retrieved 2010-03-12
^ McCracken, Harry (2010-03-16), Microsoft Previews the Revamped Internet Explorer 9 Platform, Technologizer, http://technologizer.com/2010/03/16/ie9-platform-preview/
^ Jazayeri, Mike (2011-01-14), More about the Chrome HTML Video Codec Change, Google, http://blog.chromium.org/2011/01/more-about-chrome-html-video-codec.html
^ Hachamovitch, Dean (2010-05-19), Another Follow-up on HTML5 Video in IE9, Microsoft, http://blogs.msdn.com/ie/archive/2010/05/19/another-follow-up-on-html5-video-in-ie9.aspx
^ Hachamovitch, Dean (2010-05-19), Another Follow-up on HTML5 Video in IE9, Microsoft, http://blogs.msdn.com/b/ie/archive/2010/05/19/another-follow-up-on-html5-video-in-ie9.aspx
^ Branscombe, Mary (2010-03-16), Microsoft previews Internet Explorer 9, TechRadar UK, http://www.techradar.com/news/internet/web/microsoft-steps-towards-faster-internet-explorer-9-677263

Gecko references

WebKit references

^ Pfeiffer, Silvia (2009-12-13), [whatwg] Quality Values for Media Source Elements, http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2009-December/024519.html
^ April 2012 HTML5 Media Element & WebAudio – WebKit, http://trac.webkit.org/wiki/April%202012%20HTML5%20Media%20Element%20%26%20WebAudio
^ Bug 24364 - Add HTMLMediaElement canPlayType method, WebKit, https://bugs.webkit.org/show_bug.cgi?id=24364
^ Koivisto, Antti (2007-11-12), HTML5 Media Support, WebKit, http://webkit.org/blog/140/html5-media-support/
^ Look for "GOOGLE_CHROME_BUILD", http://src.chromium.org/viewvc/chrome/trunk/src/net/base/mime_util.cc?view=markup#vc_markup
^ DiBona, Chris (2009-06-01), [whatwg] Google's use of FFmpeg in Chromium and Chrome Was: Re: MPEG-1 subset proposal for HTML5 video codec, Google, http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2009-June/020035.html
^ Origyn Web Browser for MorphOS, Fabian Coeurjoly, http://fabportnawak.free.fr/owb/, retrieved 2010-01-04
^ Holwerda, Thom (2010-03-08), Origyn Web Browser 1.7 Supports HTML5 Media, More, OSNews, http://www.osnews.com/story/22971/Origyn_Web_Browser_1_7_Supports_HTML5_Media_More, retrieved 2010-03-08
^ HTML Video Codec Support in Chrome, http://blog.chromium.org/2011/01/html-video-codec-support-in-chrome.html, retrieved 2010-01-22
^ Bankoski, Jim (2010-05-19), WebM and VP8 land in Chromium, Google, http://blog.chromium.org/2010/05/webm-and-vp8-land-in-chromium.html

Presto references

^ Pieters, Simon (2010-03-10), Everything you need to know about HTML5 video and audio, Opera, http://dev.opera.com/articles/view/everything-you-need-to-know-about-html5-video-and-audio/
^ Jägenstedt, Philip (2009-12-31), (re-)Introducing <video>, Opera, http://my.opera.com/core/blog/2009/12/31/re-introducing-video
^ Lie, Håkon Wium (2010-05-19), Welcome, WebM <video>!, Opera, http://labs.opera.com/news/2010/05/19/
^ Mills, Chris (2010-05-19), Opera supports the WebM video format, Opera, http://dev.opera.com/articles/view/opera-supports-webm-video/
^ Kleinhout, Huib (2010-07-01), Opera 10.60 goes final, Opera, http://my.opera.com/desktopteam/blog/2010/07/01/opera-10-60-goes-final

External links

HTML5 - The Video Element

Layout engines

Actively developed layout engines	Amaya Gecko KHTML Prince Trident WebKit

Inactive layout engines	Boxely Gazelle GtkHTML HTMLayout iCab Mariner Presto Tasman Tkhtml

Comparison of layout engines	HTML non-standard HTML HTML5 media canvas XML XHTML 1.1 MathML SVG CSS ECMAScript DOM Graphics Typography

Comparison of layout engines (HTML5 media)

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