PapaJohn
Tue Nov 25 11:15:06 CST 2003
Thanks for the info Iulian, I added it to the website page and asked
Microsoft for any comments.
--
PapaJohn
www.papajohn.org
"Iulian Stoica" <iulians@bigfoot.com> wrote in message
news:3fc33c2c$0$3231$ba620e4c@reader0.news.skynet.be...
> Hi Matt,
>
> I have the same problem and after a day of struggle I think I have some
> explanation for it.
> First of all you may have a look to the PapaJohn's Movie Maker 2 web page:
>
http://www.eicsoftware.com/pictures/PapaJohn/Website-MM2/MM2.html .
> It is a summary of the problems reported on this news group.
> In the "Problem Solving -> Audio Issues" you will find some explanation
> about 12bit versus 16bit audio encoding.
> Although the workaround is perfectly correct, I found the explanation of
the
> issue not complete.
> After I did my investigation I discovered that the poor sound that MM2
> produces when processing DV-AVI (from Sony DV camcorders where default
> settings for audio encoding is 12 bit, 32 kHz) is not caused by the
> conversion from 12 bit to 16 bit, but by the UP-SAMPLING of the audio
stream
> from 32kHz to 48kHz. This is a normal phenomenon and needs a filter to cut
> the extra noise added by the up-sampling. Unfortunately the DV codec from
MS
> does not implement such a filter and the Movie Maker 2 does not allow you
to
> specify the sampling frequency for audio (and selects always 48 kHz).
>
> While the workaround provided in the above mentioned web page is good for
> future recordings it does not apply for existing ones.
> Here is how I solve the problem for my existing video recordings:
> I use PowerDirector PRO 2.55 from Cyberlink to do the video editing.
> When I produce the AVI file I select either SVRT (Smart Video Rendering
> Technology) or DV- AVI with audio quality set to medium.
> The SVRT leaves the video and audio stream intact whenever it is possible
> (no effects, transition, ...).
> If you choose DV-AVI do not miss to set the audio quality to medium (which
> means 32 kHz 16 bit) in order to avoid the up-sampling, otherwise you will
> get the same result like the Movie Maker 2.
> If you do not have PowerDirector S/W then use any video editing software
> that allows you to select the audio parameters (sampling frequency).
>
> Good luck,
> Iulian.
>
>
> "Matt" <mstano@sau21.k12.nh.us> wrote in message
> news:04aa01c3b2db$e32831b0$a401280a@phx.gbl...
> > I captured some movies using a Sony Digital Handycam, and
> > them transfered the file to my harddrive. When I view the
> > raw data in media player everything is ok. However, after
> > I import the video into MM2 the audio on the video clips
> > sounds like the chipmunks. Can anybody help me? Its
> > important to hear the audio from the clip otherwise I'd
> > just turn it off.
> > Thanks.
> >
>
>