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[whatwg] Video : Slow motion, fast forward effects

From: Charles Iliya Krempeaux <supercanadian@gmail.com>
Date: Tue, 14 Oct 2008 12:56:38 -0700
Message-ID: <84ce626f0810141256h30fbf5cfif6ca025bbd530acd@mail.gmail.com>
Hello,

Note that I said "when it is available".


I'd strongly encourage Codec/Plugin developers to add support for it.  As I
know you'll have a certain class of web developers screaming for this
feature.  (And you'll be able to create alot of "cool" stuff with it :-)  )

-- 
Charles Iliya Krempeaux, B.Sc.
http://ChangeLog.ca/


On Tue, Oct 14, 2008 at 12:34 PM, WeBMartians <webmartians at verizon.net>wrote:

> I agree that scrubbing requires non-1X audio. However, to require it is
> going to cause CoDec/PlugIn developers not just headaches
> but maybe aneurisms as well.
>
> Interestingly enough, audio at varied play rates has the potential to
> retain tonality. Since the audio is encoded with something
> like a Fourier transform, the data is "spectral" rather than "wave." The
> samples may be presented tonally-accurate even if their
> duration is not 1:1.
>
> Nonetheless, you're going to be very unpopular if the word "required"
> starts showing up.
>
> Best!
> ________________________________
>
> From: whatwg-bounces at lists.whatwg.org [mailto:
> whatwg-bounces at lists.whatwg.org] On Behalf Of Charles Iliya Krempeaux
> Sent: Tuesday, 2008 October 14 15:24
> To: Ian Hickson
> Cc: whatwg at whatwg.org
> Subject: Re: [whatwg] Video : Slow motion, fast forward effects
>
> Hello Ian,
>
> On Mon, Oct 13, 2008 at 3:41 PM, Ian Hickson <ian at hixie.ch> wrote:
>
> [...]
>
>        On Thu, 7 Aug 2008, Charles Iliya Krempeaux wrote:
>
>        >
>        > This feature would be used to implement "scrubing".  Like what you
> see
>        > in Non-Linear Editors... for making movies, etc.  (I.e., grabbing
> the
>        > "position handle" of the player, and moving it forwards and
> backwards
>        > through the video, and varying speeds, to find what you are
> looking
>        > for.)
>        >
>        > In those types of applications, the audio is on.  And it is
> important
>        > for usability, for the video editor to hear the sound.
>
>
>        I agree that on the long term we would want to provide this, but I
> think
>        that is something we should offer as a separate feature (e.g. a flag
> that
>        decides whether reverse-playback audio is muted or not, defaulting
> to true
>        for compatibility with today).
>
> If there's some way of turning this feature "on" (when it is available)...
> that would be sufficient for scrubbing AFAICT.
> --
> Charles Iliya Krempeaux, B.Sc.
> http://ChangeLog.ca/
>
>
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