Sync problems give me a headache, please help!

[Spartaantje]

Well after reading manny posts and trying several options I still have the same two problems concerning out of sync files/vcd's.

The first problem is the one with the downloaded avi's. At almost all the audio and video are out of sync. Some at a contant rate and some slowly getting worse.
I've tried some options using virualdub and extracting the wav file and edit this. Mostly I'm able to synchronise the film using the interleave option, but when I run it trough TMPGEnc it's out of sunc again (mpeg file).

The second is the one with the perfectly ok mpeg (downloaded) which already has been cut into 2 peaces. No sync problem when playing the mpeg file in win media player or using vitualdub. But when I burned the mpeg as an vcd using nero the movie is out of sync (playing it on my dvd player).

I hope I get the GOLDEN tip this time because it's getting pretty ... well you can fill that one in yourself. Let's just say I've been trying for over 2 months now and I've got a terrible headache )

Thanx fot all your help in advance.

[mkaiser]

Hey!

It've had the same experience with TMPEGenc. It seems to always encode the audio out of sync... It's like it shrinks the audio track. Here's what you can do to fix this in TMPEGenc...

1. Encode the files to mpeg
2. Open the newly mpeg file with virtualdub and rip the audio to a .wav file (you can skip this step with SoundForge and open the mpeg file directly if you have SoundForge!) and open it in your sound editor (ie. SoundForge).
3. In virtualdub, look for something that makes an isolated sound like a gun, door or a bang near the end of the file. You have to look for the first frame where u see the gun going off (where the sound should begin)... write down the time for this frame on a piece of paper. For this example let's say it happens at 1:42:00.
4. In your sound editor, look for the same sound and write down the time where it begins on a piece of paper. For this example let's say it happens at 1:41:25.
5. Now just do the following equation...

(time from sound editor) - (time from vitualdub) = this will give u
out of sync time

6. Now, that u know how out sync the audio track is do this. In your sound editor, time stretch the sound track by adding the "out of sync" time. In SoundForge, u would do this by doing Process->Time Stretch...-> and then adding the "out of sync" time to the middle of the track.
7. save the new audio file as wave and encode this file to audio mpeg with TMPEGEnc....
8. All u have to do now, is combine the new audio file and with the old mpeg file u encoded in TMPEGEnc using the mpeg tools in TMPEGEnc.

It sounds like a lot of work, and it is. But it's not that complicated. I personnally, stop using TMPEGEnc a long time ago because of this and other stuff. I now used mediaconcept's new mpeg encoder (I was using panasonic's before though). Which encodes perfectly!!... except Ulead DVD Movie Factory seems to have problems with some Media Concept's mpeg files.

Anyway, hope this works for u

Laters!!

[mkaiser]

Ooops!!

I wrote down the equation wrong this is what it should be like...

(time from virtualdub) - (time from sound editor) = (out of sync time)

sorry.

[Spartaantje]

thnx I'll give it a try

[royalbram]

Well after reading manny posts and trying several options I still have the same two problems concerning out of sync files/vcd's.
(...)
The second is the one with the perfectly ok mpeg (downloaded) which already has been cut into 2 peaces. No sync problem when playing the mpeg file in win media player or using vitualdub. But when I burned the mpeg as an vcd using nero the movie is out of sync (playing it on my dvd player).

Strangely, I have the opposite with SVCD´s (not VCD´s). I take avi files in perfect sync, convert them to SVCD with TMPGEnc; the results are out-of-sync MPEG files which are, mysteriously, once again in perfect sync once I burn them onto CD-Rs. Not a big problem, the end result is what´s important, but it´s curious.

[narked]

I think the prob your experiencing is down to your DVD player, when burning vcds for mine I have to put a sound delay of 500ms using TMPG to get it to sync properly(but with svcd no sound delay), my mate uses 250ms for his DVD player, depends on the model I think? Try creating a sync test disc, i.e. say 8 30second tracks with varying sound delays and run it on your DVD player to see which track syncs the best.......

[Spartaantje]

I take avi files in perfect sync, convert them to SVCD with TMPGEnc; the results are out-of-sync MPEG files which are, mysteriously, once again in perfect sync once I burn them onto CD-Rs.

Well I've got some avi's which I synchronised using interleaving in vitualdub, but when converted into MPEG they're out of sync again. I used to throw them in the bin. I'll try to burn one I guess and see if it's in sync again.

Can't hurt to try.

[Spartaantje]

The first problem is the one with the downloaded avi's. At almost all the audio and video are out of sync. Some at a contant rate and some slowly getting worse.
I've tried some options using virualdub and extracting the wav file and edit this. Mostly I'm able to synchronise the film using the interleave option, but when I run it trough TMPGEnc it's out of sunc again (mpeg file).

Any suggestions for the first problem?

[Conquest10]

people that keep reposting the same problem IN THE SAME FORUM give me a headache.

[Garf4u2]

For all the frustrated users out there:
I found a simple solution to audio out of sync for .avi files.
#1 Extract Audio to .wav using VirtualDub
#2 Open the .avi file in TMPGEnc and choose the wav file as the audio source
#3 Go to Advanced --> Source Range Option and play around with "Audio Offset" Feature. If the audio is too early input negative values, if its too late input positive values. Usually a range of +/ - 500 to a 2000 will solve it. You'll get general sense of the out of sync by playing the file.. is it one second or 2 second. FYI, 1000millisecond is one second so a range of 500 to 2000 will cover 1/2 a second to 2 seconds.
Good luck !