[1] [CITE[Re: Video : Slow motion, fast forward effects]] ([[Ian Hickson <ian@...>]] 著, [TIME[2008-10-13 22:41:19 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/15893>

[2] [CITE[Re: Video : Slow motion, fast forward effects]] ([[Ian Hickson <ian@...>]] 著, [TIME[2008-10-15 09:08:21 +09:00]] 版) <http://permalink.gmane.org/gmane.org.w3c.whatwg.discuss/15935>

[3] [CITE@en-us[Firefox 3.1 for developers - MDC]] ([TIME[2009-02-08 18:25:06 +09:00]] 版) <https://developer.mozilla.org/ja/Firefox_3.1_for_developers#HTML_.e3.81.ae.e5.a4.89.e6.9b.b4.e7.82.b9>

>video と audio 要素。

[4] [CITE[Don’t call me DOM » The beauty of HTMLMediaElement]] ([TIME[2009-03-09 21:25:46 +09:00]] 版) <http://people.w3.org/~dom/archives/2009/02/the-beauty-of-htmlmediaelement/>

[5] [CITE@en[(X)HTML5 Tracking]] ([TIME[2009-06-30 22:31:26 +09:00]] 版) <http://html5.org/tools/web-apps-tracker?from=3341&to=3342>

[6] [CITE[IRC logs: freenode / #whatwg / 20090612]]
([TIME[2009-09-01 00:21:52 +09:00]] 版)
<http://krijnhoetmer.nl/irc-logs/whatwg/20090612#l-629>

[7] [CITE@en[HTML5 Revision Tracker]]
([TIME[2010-05-04 14:33:45 +09:00]] 版)
<http://html5.org/tools/web-apps-tracker?from=5069&to=5070>