DivX to SVCD Sync

[wee haggis]

If the original DivX is synced up perfectly,how can I guarantee a synced up SVCD after conversion with TMPGE?
Ive tried it the regular way as well as using the extracted WAV as the audio source and on two movies its came out the same way(about 2 seconds out).I know how to get it back in sync after the MPEG2 is made but its a very lengthy process and inconvenient.Any way to ensure that sync stays "a is"?

[bugster]

When you say the audio in the Mpeg is out of sync, do you mean it is out from the beginning and stays about the same amount out of sync all the way thru, or do you get a gradual loss of sync? If it is the latter I suspect that you are changing the video framerate when you convert from Divx to Mpeg, possibly without realising it

[wee haggis]

I did a couple of test and its interesting what I found.

First of all I opened the DivX in Virtualdub:
23.976f/s
Div3

Then in TMPGE
23.976f/s
Div4

After doing a quick encode test to Mpeg2,it is out of sync,so I experimented by setting the framerate at 29.97 and it was in perfect sync.
Is it possible for the quoted framerate to be incorrect??

[bugster]

I must admit thats wierd. I generally trust virtualdub to tell me the correct frame rate of the Divx. Dont know about Tmpgenc but would expect it to be correct also. In order to get the audio in sync at 29.97 did you change which template you used or simply change the framerate?

[wee haggis]

I changed nothing but the f/s...everything else was exactly the same(actually I tell a lie)...after changing the framerate(it was 23...29 internal) a window popped up saying that I could'nt leave the Encode Mode at 3:2 dropdown.So,I just changed it to Non Interlace.

[wee haggis]

Bit of an update...it seems that I can leave the f/s as is but by changing the encode mode to Interlace or non...its in sync.But,the 3:3 pulldown puts it out???

[bugster]

I only encode to DVD, which must be at 29.97 fps or have 3:2 pulldown. I thought SVCD didnt need pulldown but I may be wrong. Waht I have discovered thru trial and error, is that TmpGenc doesnt seem to do 3:2 pull down perfectly. tho I cant claim to fully understand the process. However, I find using pulldown.exe after using Tmpgenc to encode at 23.97 fps, gives smoother playback, it may also go some way to explaining your audio problem.