AVI to KDVD conversion problem

[Irrational Stoat]

I use TMPGenc plus to encode AVI files to KDVD half-D1 PAL format so I can use them in DVDLab pro when I make DVD's. I encode them to seperate ES files (mv2 and mp2 extensions), as DVDLab prefers it that way.

Usually, I have no problems with ths method - it gives me good quality and low file size. But some AVI files are giving me a problem.

When I import the ES files I made into DVDLab (using the pulldown to 25 fps from the original files' 23.98 fps), the mv2 video file is sometimes longer (in minutes and seconds) than the mp2 audio file.

Also, when I compile the project and play the VIDEO_TS folder through my DVD player software, the playback is jerky, and the audio eventually goes out of synch.

I always make sure that I use the original fps of the file in the TMPGenc conversion, and it only happens with some AVI files and not others.

Can anyone help?

[redwudz]

You might check for MP3 VBR audio. You can save it out as a WAV in Virtualdub and use that to encode with. Opening the AVI in VD will tell you. It causes a lot of sync problems.

[Irrational Stoat]

I've tried using Vdub to extract the WAV, while using TMPgenc to encode the video to the KDVD ES stream.

But whether I use TMPGenc or Vdub to convert the audio, the problem seems to be with the video file.

[lordsmurf]

KDVD is not 100% to DVD spec, just FYI.

[Irrational Stoat]

I do realise that, it just puzzles me why some files convert smoothly, and some don't.

EDIT:

OK, I've narrowed down the problem somewhat. It's all about framerates. When I convert a file that has a framerate of 23.976, I have to keep it's framerate while I convert to ES streams, then use DGPulldown to change the framerate to either 25fps for PAL, or 29.97fps for NTSC.

Because I make my DVDs in DVDLab, I can't use the original 23.976fps ES file - it only accepts 25 or 29.97fps files. But if I pulldown to 25fps, the length in time of the file increases, knocking it out of synch with the audio. And when I pulldown to 29.97fps the length in time doesn't increase - but the resulting VOB is jittery when played back.

So I really need to find a way to convert an AVI with a framerate of 23.976 in a way that gives a smooth, jitter-free result.

Are there any free utils that can do this? Is there a way to do it in Vdub? I only know of DGPulldown, and I can't get good results with that.

[Irrational Stoat]

OK, I may have figured this out, finally! lol

I've searched the forum once more, and found a way to convert from 23.976 to 25fps by using a combination of VdubMod and BeSweet - I've just done the VdubMod and BeSweet conversions, and I've just started the final TMPGenc conversion to a DVD compatible MPEG2 video file.

I really, really hope this works....lol

[funkguy4]

the conversion from 23.976 fps to 25 fps is from NTSC Film standard to PAL
the industry standard way of doing this conversion is to keep the original video frames and speed them up to 25 fps, then speed up the audio with pitch controll to compensate for the change in video duration
besweet can do the audio stuff for you

and i think there's a program called DVDPatcher that will change mpeg streams' framerates and other things for you

[Irrational Stoat]

the conversion from 23.976 fps to 25 fps is from NTSC Film standard to PAL
the industry standard way of doing this conversion is to keep the original video frames and speed them up to 25 fps, then speed up the audio with pitch controll to compensate for the change in video duration

That's what I thought I was doing with the VdubMod and BeSweet conversions I did. However, I still can't get a decent result.

Grrr.

[funkguy4]

AVISynth W000000!!!
use my calculator to determine what you needa resize the video too (if you need it) then frameserve to an encoder.
the audio was probably coming out just fine from besweet
i would really recommend my calculator to make sure you end up with standard resolutions. you're using vdubmod anyway, so using the calculator would be mighty easy.....i'm wondering if i should add some functionality into it so it can generate avisynth scripts too......hrmmmm

[animatron]

<spam removed>

You are in breach of the forum rules and are being issued with a formal warning. I think this site has had enough of your kvcd/kdvd spam. That's all you ever post about. Not to mention all of it is marketing baloney and factually challenged. Bye bye.
/ Moderator lordsmurf