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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Charles Iliya 
Krempeaux
Sent: Tuesday, 2008 October 14 15:24
To: Ian Hickson
Cc: [EMAIL PROTECTED]
Subject: Re: [whatwg] Video : Slow motion, fast forward effects

Hello Ian,

On Mon, Oct 13, 2008 at 3:41 PM, Ian Hickson <[EMAIL PROTECTED]> 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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