Gknot creates problematic .avis

[bwalerud]

There seem to be something wrong with .avi's created with Gordian Knot 0.27/DivX 5. The files plays fine but when stripping the soundtrack from them using Nandub - the problems starts:

- NanDub just chokes without any error message
- VdubMod works fine except a warning message regarding av VBR soundtrack but when processing the resulting Wave-file with BeSweet (into MP2) the file just contains a hissing noise.
- Impossible to create syncronized VOB/IFOs using IfoEdit. Every attempt creates a movie that runs too fast with OK sound.

This has happened to two movies I processed using Gk so far.

[Hiro2k]

It seems that the problem is with your soundtrack. If your using the default mp3 settings in Gknot, then your creating a VBR MP3. Those tend to have problems. But it's strange that Nandub and Vdubmod are screwing up with it. Those 2 programs should be able to handle VBR MP3's.

[len0x]

Originally posted by bwalerud
There seem to be something wrong with .avi's created with Gordian Knot 0.27/DivX 5.
:confused:

[manono]

Hi-

Yeah, I'm not sure I understand either. You said the .avi plays fine, so how is it a GKnot problem? It seems to me that GKnot did its job.

Perhaps you're going about getting the audio back out the wrong way, although I'm not sure why you'd want to do that to begin with. Say that you use NanDub to strip out the audio with the Save WAV command in Direct Stream Copy. You do know that you're not getting a WAV file out of there, right? You have to rename it as what it originally was (movie.mp3 most likely). Then you can do with it whatever you like. Or have we all misunderstood? :)

[bwalerud]

Tried to be brief in my original post but obviously I wasn't clear:

- Gknot does produce fully working avi's in the sense that they play well in various players

- My experience - and I've really tried to look into this - is that the avi's created using GKs default setup do not work well if you try to run them through TmpgEnc/Ifoedit. The resulting VOB/Ifos either don't play all through, have sound problems, synq problems or play too quickly.

- Nero have a plug-in for converting avi´s into VCD,SVCD or DVD. Running a GKnot produced avi through this plug-in creates the same problems as with TMpgEnc/IFOedit.

- Older avi's created with other methods eg. Flaskmpg/Divx3.11 works well using these procedures

My point is that although GKnot creates fine avi's they don't seem to be fully compliant with current tools for format conversion, audio extraction etc.

Following the posted Doom9 Guide for converting an avi --> DVD r using my Gknot encoded avi's does not create a working end result.

[len0x]

even if it is true, GK as a frontend tool is not directly responsible for AVIs it's producing... If you try manually encoding with VDubMod I bet you get the same result. So I suggest you ask Vdub(mod) ppl about it...

[bwalerud]

I'm fully aware of that GK is just a front-end to simplify a fairly involved process using several different softwares. I think GK is great and fully appreciate the effort to improve it.
However GK sets a number a default parameters in the encoding process. I've likely discovered a problem with these parameters and maybe a change in the default settings (eg. VBR/CBR audio encoding)can take care of this problem in future releases of GK. The problem might very well be in VdubMod.

[TheWEF]

manono already said what you have to do: extract the vbr-mp3, convert it to wav and remux - now you should be able to open the avi in tmpg.

just to make sure: you are aware of the fact that there are other ways/tools to create vcd/svcd/dvd: dvd2svcd, dvd2one,... you do not need gknot in the process.

wef.

[bwalerud]

Originally posted by TheWEF
manono already said what you have to do: extract the vbr-mp3, convert it to wav and remux - now you should be able to open the avi in tmpg.



Doesn't help unfortunately. I had success however by the following procedure:
Extracting wav, convert to ac3 by BeSweet, process only video by tmpgenc and then process the resulting m2v and ac3 by Ifoedit.