DVD-Lab A/V sync problems with FILM source and 3:2 Pulldown

[vcddude]

Hello all,

I'm in the process of converting some non-anamorphic DVDs into anamorphic for my 16x9 HDTV and am running into a weird audio/video sync problem with DVD-Lab. I've never had an A/V sync problem with DVD-Lab until now.

Here is what I am doing:

1. Rip the DVD with DVD Decrypter
2. Convert to .d2v and .wav with DVD2AVI
3. Encode to DVD MPEG-2 with TMPGEnc (here I am clipping 60 lines
off the top and bottom while retaining a 16x9 aspect ratio to
create an anamorphic DVD as explained in the DVD-Lab Manual)
- I encode to .m2v and .wav (PCM) elemental streams.
4. Convert the .wav to .ac3 with Vegas Video
5. Import the .m2v and .ac3 into DVD-Lab, author, and burn.

That's the process. Unfortunately near the end of the resulting DVD, the audio is out of sync with the video (by about .5 sec). Disc is about 90 minutes long.

Note the the source video is FILM at 23.976 fps and I encode to DVD MPEG2 with "3:2 Pulldown when Playback" enabled in TMPGEnc (framerate is "23.976 fps (internally 29.97 fps)"). Could this be the source of the sync problem (the 23.976 fps -> 29.97 fps conversion / pulldown?)

Perhaps I should convert the .d2v file into a pseudo .avi with VFAPIConvEN and render it to .avi at 29.97fps in Vegas Video and then convert that to MPEG-2. Will this work, or will rendering the FILM source at 29.97 fps create framerate problems?

Any insight is appreciated.

Thanks,
Kevin

[vcddude]

I should also add that this was a 2-Pass VBR encode with TMPGenc. I've never had any sync issues with CCE-encoded files.

Other posts seem to point to "2-Pass VBR TMPGEnc" as the problem.

Also, would the DVD still play properly if I de-selected the 3:2 Pulldown function?

Kevin

[vcddude]

Hmmm. No responses.

I tried using DVD-Lab with an .m2v files encoded CBR with TMPGEnc, also with 3:2 Pulldown and found that DVD-Lab did not like that either. In this case, the Disc Compile function went on for hours while it was writing the vobs to the video_ts file. I finally killed it.

So the answer seems to be that DVD-Lab does not like MPEG2 encoded with 3:2 Pulldown enabled, regardless of VBR or CBR encoding.

TMPGEnc DVD Author works fine though.

vcddude

[FOO]

A lot of programs don't like NTSC Film with soft pulldown,
especially when it's mixed. Did DVD2AVI say 100% film ?
I had problems with DVDlab with mixed video when I tried to
add chapters. At the time, the Mediachance forum had several threads
about it. It's a known problem.
One way may be to mux the video first and feed that to DVDlab.
but if you add chapters it might break.

[FulciLives]

I had audio sync problems using DVD-Lab with TMPGEnc produced M2V video that had been encoded with the 3:2 pulldown fuction in TMPGEnc.

I really don't think TMPGEnc does anything wrong. The same M2V and audio file (I used LPCM in this instance as the movie was only 75 minutes long) was perfectly in sync using both SpruceUP and TMPGEnc DVD Author.

I say the problem is with DVD-Lab.

The only solution I think is to enocde as 23.976fps in TMPGEnc ... in other words don't let TMPGEnc do the 3:2 pulldown ... but instead use PULLDOWN.EXE after ... like you would when using CCE.

But of course you already did your MPEG-2 encoding and probably don't want to do it again (and I wouldn't blame you). So maybe this time try another authoring program but in the future encode it as I said above with PULLDOWN.EXE

My solution was simple. I don't use DVD-Lab. Nice program but way too buggy for me. I'm rather happy now using TMPGEnc DVD Author. Sure the menu designs may not be as nice as DVD-Lab but it is simple and easy to use and very stable. It has never given me any problems. Plus of all the DVD authoring programs I have used NOTHING makes life easier when selecting custom chapter points than TMPGEnc DVD Author. It is almost a joy to use.

- John "FulciLives" Coleman

[FOO]

I think the Munu stuff in DVDlab is the best thing since sliced
bread, but THE PROGRAM DOESN"T WORK reliably on the basic
low level processing of the videos.

[FulciLives]

I think the Munu stuff in DVDlab is the best thing since sliced
bread, but THE PROGRAM DOESN"T WORK reliably on the basic
low level processing of the videos.

Which is why I never registered it (aka bought it) after the trail period ran out.

It's a shame too because the program has soooooooo much potentional.

- John "FulciLives" Coleman

[FOO]

I think Oscar bought some of the MPEG2 and audio stuff. and
can't tame it.