DVDLab Audio Sync Problem, IFOEdit OK

[Letricheur]

I captured PAL DV, changed the frame rate to 23.976 (simple slowing with assume fps), resized to 740x480, reencoded in CCE, and ran pulldown, all this to make an NTSC DVD. Playing this video file in WMP shows the length to be less than it should be by a few seconds (using 25/23.976 calculation). I re-encoded in CCE with drop frame and ran pulldown with drop frame true and it is still showing up short in WMP. In Premiere 6.5, however, the duration shows as correct.

Loading the m2v file into DVDLab also shows the duration to be short by a few seconds. Muxing with the audio file (stretched by Cool Edit 2000 to 104% length) produces a vob file with audio out of sync by about the same few seconds. But, muxing with IFOEdit produces a vob file in perfect sync. There is another thread in the forum where someone had the same problem but there was no solution offered.

I would really like to stick with DVDLab because the menus are so easy to make but just can't get the audio in sync. Any ideas?

[Letricheur]

Well, I have to take some of this back - IFOEdit is not even synchronizing properly. The video and audio files are the same length, some dialogue I checked appears at the same time in both files but when I mux them with IFOEdit or DVDLab, it begins in sync but then they quickly get way out of sync. It's driving me nuts.

Does anyone have any ideas?

[Letricheur]

OK, it's getting even more weird. The video file shows the correct duration in WMP and plays correctly - the dialogue (silent but I can read the lips) occurs at the right time. When I mux with either DVDLab or IFOEdit it is clear that the video plays very quickly and ends 2 minutes short of the sound - 8 minutes vs 10 minutes. When put into DVDLab, WMP, Real Player, and Premiere 6.5, it registers the video file as 10 minutes duration. When put into Maestro, it registers as 8 minutes. What's happening!!!??

[Letricheur]

This is beginning to feel a little like talking to myself. I have unravelled part of the mystery. It seems that part of the problem is pulldown. If I run pulldown to change fps to 29.97 and to change the field order to even (to correct what CCE did to it - incorrectly labeled as tff odd or top field first), it somehow prevents the pulldown from happening. If I check the video file in Bitrate Viewer it says 29.97 fps but in bbMPEG it does not detect pulldown. If I do not change the field order during pulldown, everything is fine, audio and video are in sync but it is jerky on the TV!

[rs008f]

You're not alone. I use CCE to encode Divx/Xvid videos too. They turn out very slightly jerky on my TV/DVD player. Though very slightly but still annoying. It seems that changing the field order changes the speed of the video and makes it out of sync with the audio. I'm still trying to find a solution.

[mudda_t]

...audio and video are in sync but it is jerky on the TV
Don't know if this will help but people report the same problem when using a tmpgenc authored source in dvdlab. thread here (http://forum.doom9.org/showthread.php?s=&threadid=71220)

[maa]

I think ALL output form CCE needs to be run through ReStream before you do anythong else with it - "reset time stamps" and "Correct Sequence Extension Length"

Have you tried VirtualDub and Frameserving to CCE ?

[rs008f]

I tried converting my CCE output from TFF to BFF, it increases the speed of my video and goes out of sync with the audio. I'll try just
"reset time stamps" and "Correct Sequence Extension Length" ONLY this time and see what happens.