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List:       ms-wmtalk
Subject:    Re: Bug in MPeg3 codec
From:       "Johnson, Greg A" <GAJohnson () UH ! EDU>
Date:       1998-10-28 22:37:21
[Download RAW message or body]


Or you could add markers as your "visual" reference and
watch the same thing happen!

Greg

> -----Original Message-----
> From: Wilfried Henseler [SMTP:a0525@RS1.RRZ.UNI-KOELN.DE]
> Sent: Wednesday, October 28, 1998 9:13 AM
> To:   Netshow@DISCUSS.MICROSOFT.COM
> Subject:      Re: Bug in MPeg3 codec
> 
> Yes, this happends to all stuff encoded with microsofts (frauenhofer)
> codec
> for MP3.
> 
> I've tested this a little more now and can say that ALL with the MP3 codec
> encoded audio becomes about 0.5% shorter.
> 
> You cant hear that, nor can you see any significant changes in smal files.
> But you WILL see it, when you have audio and video together in longer
> files. Imagine a 1h video stream - near the end the audio will differ 30
> seconds!
> 
> But as i mentioned before, you can simply try it by yourself, just take
> any .WAV file, view it with the mediaplayer and write down the exact
> length of it. Now convert it with any audioeditor using the MP3 codec
> and you will see it differs in length.
> 
> bye,
> wilfried henseler
> 
> -----Ursprüngliche Nachricht-----
> Von: Johnson, Greg A <GAJohnson@UH.EDU>
> An: Netshow@DISCUSS.MICROSOFT.COM <Netshow@DISCUSS.MICROSOFT.COM>
> Datum: Dienstag, 27. Oktober 1998 13:53
> Betreff: Re: Bug in Mpeg3 codec
> 
> 
> Does this happen with content under 10 minutes, or am I just
> putting my markers in the wrong place?
> 
> Greg
> 
> > -----Original Message-----
> > From: Wilfried Henseler [SMTP:a0525@RS1.RRZ.UNI-KOELN.DE]
> > Sent: Sunday, October 25, 1998 7:03 PM
> > To:   Netshow@DISCUSS.MICROSOFT.COM
> > Subject:      Bug in Mpeg3 codec
> >
> > Hi,
> >
> > the MPeg3 codec isnt able to synchonize an audiofile.
> > Just a very simple test: take a wav-file of 10 minutes and 0 seconds
> > and convert it to Mpeg3 (i tested this with Goldwave and Soundforge).
> > Then take a look at the result in the MediaPlayer - it will be
> > about 3 seconds shorter than the original!
> > A horror for any video, as audio will be 3 seconds out of sync after
> > just 10 minutes :(
> >
> > bye,
> > wilfried henseler
> >
> 
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