[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>