[MPlayer-users] Re: 3pass audio sync problem

[Linards Ticmanis]

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Jonathan Rogers wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> Linards Ticmanis wrote:
>
>> Well, over here the DVDs are all Mickeymoused up to 25fps. The 4%
>> speedup is enough to be annoying if you know the original. I encode all
>> PAL film sources into NTSC by now to get around this.
>>
>> (Fortunately with mplayer you can simply say -speed 0.96).
>
>
> You can tell that the sound is slightly too fast and the frequency too
> high? Or does everyone just walk around a little too sprightfully?

The speaking just sounds a bit more breathless that way, and also there
is the over-eagerness of movements you mention. To get the frequency
difference as such you'd probably need "absolute hearing", which some
great composers reputedly had, but I certainly don't. Also I heard
sometimes a method is used which speeds the sound up without a frequency
shift, like the "sox" stretch effect does. The one thing where absolute
frequencies are important is the higher freqencies in vowels (fermants)
as far as I know, since those determine which vowel we hear. But 4% is
not enough to really make a big difference in this so many times the
sound is obviously just pitched up.

- --

Linards Ticmanis

 The Master said, "The business of laying on the colors follows the
preparation of the plain ground."

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