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| Sandman |
 Posted: Oct 11 2002, 11:23 AM |
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Unregistered
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Hello masters!
I'm a newbie and I've just started VDub last week, so I'm still having my first steps.
I've downloaded 2 films (DivX format) and they were big! (755 MB each).
I've tried to "cut" them so they could fit in a 700 MB normal CD.
The films are ok, I can easily see them in any avi viewer.
When I start working with them in VDub, a message always arrives:
"VDub has detected an improper VBR audio encoding in the source Avi file and will write the audio header with standard CBR values during processing for better compatibility. This may introduce up to 31958 ms of skew from the video stream. If this is unacceptable, decompose the "entire" audio stream to an uncompressed WAV file and recompress with a constant bitrate encoder (bitrate 144.8 +- 27.2 kbps)"
When, in VDub, I try to put the film in a particular point (in the middle, for example), the sound and the video don't match.
My question is:
1- Are my films wrongly downloaded? (I don't think so because I can perfectly see them)
2- How can I solve my problem?
3- How do I decompose the "entire" audio stream to an uncompressed WAV file?
4- What's a bitrate encoder?
I know that all the "brains" who are reading my post were once newbies, so that's why I know that you'll help me.
Thanx everybody
Sandman |
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| BaronVlad |
| Posted: Oct 11 2002, 06:44 PM |
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Terrorhörnchen
Group: Moderators
Posts: 335
Member No.: 28
Joined: 12-July 02
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The movies are ok, the sound is vbr (variable bitrate) audio and VDub cannot work with this format. You should use NanDub instead.
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Hochachtungsvoll
BaronVlad
Deutsch >> Capture FAQ - Capture Guide
Englisch >> Capture FAQ - Capture Guide |
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| Sandman |
| Posted: Oct 14 2002, 11:29 AM |
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Unregistered
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Thanks BaronVlad.
U're really a master!
I did it with nanDub and it worked, but... Now I've got another question. Is it possible to transform an AVI file of 750 MB into another of, let's say, 650? I believe I'd change the bitrate... But who am I? Just an Ignoranimus!
Thanks for everything.
Sandman |
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| Kippesoep |
| Posted: Oct 14 2002, 04:59 PM |
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Moderator of the Virtualdub support forum
Group: Moderators
Posts: 447
Member No.: 441
Joined: 6-October 02
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That is what you'd have to do. It'll mean having to recompress the video, though. Unfortunately, that can mean an even further degradation in quality (on top of that caused by lowering the bitrate). Perhaps you're better off cutting the clip into two parts and storing them on two CDs instead of one. |
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| Neo Neko |
| Posted: Oct 15 2002, 06:42 PM |
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VirtualdubMod Alpha tester
Group: Vdubmod Alpha Testing Team
Posts: 474
Member No.: 24
Joined: 11-July 02
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| QUOTE (BaronVlad @ Oct 11 2002, 12:44 PM) | | The movies are ok, the sound is vbr (variable bitrate) audio and VDub cannot work with this format. You should use NanDub instead. |
The movies are not really ok though are they? By their very nature they break the AVI specs. AVI does not support VBR audio period. Mileage will varry drastically. Avery/Phareon agrees and that is why he put in that warning etc. It is to save people from themselves. I know people are probably tired of hearing me say it. But if you ever plan on sharing your files. If you are concerned about compatability at all. Never use VBR MP3 it is just plain wrong.  |
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