Audio is out of sync with video- what can i do?

[burna3000]

Just completed first DVD, w/ 19 eps of the simpsons, (VCD quality) using tmpgenc to author, with the chapters, and using nero v 5.5.10.28 to burn it (using the DVD-video option)

Burnt OK, using P-B DVD-RW, and started to play. But towards 1/4 way through each of the eps, the audio comes out of sync w/ the annimation- by the end its kinda unwatchable.
checked it on PC w/ various players- no difference

So what i want to know is what i can do now, can i improve it, or is it the s/w that i used?

Any help greatly recieved, thanx

[AndThenSome]

Definitely no expert here but I had the same problem with VCD video I put on DVD with Ulead Movie Factory (using SVCD2DVD to prepare MPEG1).

I tried the Simple Demux in TMPEG on the original MPEGs then did a Simple Remux. Split em up and zipped them back and it solved the problem. For some reason SVCD2DVD created stuttering video that had sych probs but this fixed em before I burned. Good Luck.

[DivXExpert]

Probably something that happend with TMPGEnc, loading the audio with a different sample rate, then letting TMPGEnc convert it to 44100. Convert the audio to .mp2 fisrts, then mux with the video later. don't do any framerate convertions.

[burna3000]

Thanks for your replies- DivXexpert, could you explain what i should do plz?
as i said, i'm kinda learnin about this, and what you said did't mean alot....

If its any help, here's what the video comprises of, video/audio wise:
MPEG-1, 352x240 29.97fps 4:3 (NTSC)
MPEG-1 Audio layer-2 48000hz stereo 224 kbps (monolingual)

Hope it helps

[yf2001usa]

take the the origional mpg. run it through tmpgenc you only need to reencoded the audio. then encoded the mp2 to 48khz with besweet. and load this audio stream into tmpgenc dvd author to replace the audio stream that is there now.

[burna3000]

OK, so I've loaded the episodes into Tmpgenc, but I'm not sure how i only re-encode the audio- as far as i knew, it does it 'all in one'?
I'll see if you can guide me with this before i ask any more qu...

[yf2001usa]

don't use the wizzard.

but use the main screen. load the mpg into the field for video. then press the load button and search the vcd.mcf then press load again and load unlock.mcf. then you can use the radio buttons to select es audio only then push the start button.

[theDruid]

burna3000, you may want to try what AndThenSome suggested if you haven't already:

tried the Simple Demux in TMPEG on the original MPEGs then did a Simple Remux. Split em up and zipped them back and it solved the problem.

Open TMPGEnc (and close the Wizard if it pops up), then goto File->MPEG Tools

The Simple Demux AndThenSome was talking about is the 'Simple De-multiplex' tab. You should be able to use this to split your MPEG(s) into audio and video components, and then put them back together again with 'Simple Multiplex'. This method does fix some problems with issues such as audio sync.

You can also use the MPEG tools to demux, and then add a separately encoded audio track to your video, without having to do all the re-encoding again. (Use BeSweet and SSRC & tooLame to resample and encode audio from a wav). This - I think - is what DivXExpert was suggesting.

Try just demuxing and remuxing first though.

cheers,
mcdruid.

[burna3000]

I'm just wondering if i've got a different version of the programme to you two- i can't find any of what you mentioned-
I start up the programme, and come to the Tmpgenc DVD authur scree,n where i have the choice of creating a new project, or opening an existing one, but i cant find where to access the file menu, any ideas ?

[theDruid]

ah - we probably are talking about different versions - I just use TMPGEnc (i.e. not TMPGEnc Plus or TMPGEnc DVD).

I believe that MPEG Tools in the basic version of TMPGEnc will work on MPEG1 and MPEG2 files, so if TMPGEnc DVD doesn't have them - download the basic version (see tools section on this site) and use that.

If not, BBmpeg can also do mux/demux, and I'm sure it does MPEG2 as well as MPEG1.

let us know how you get on.

cheers,
mcdruid.

[burna3000]

Mcdruid- did you d/l your version of tmpgenc a while ago- i can only seem to find links to the version i have now, and not the standard one- can you have any better luck?
A direct link would be handy if poss
tried with bb mpeg, but after clicking on the link in the tools section, i could't find anywhere to actually d/l it- take a look.....

[theDruid]

The TMPGEnc site uses frames, so it's hard to link to, but here's a direct link to the latest 'non-DVD' version ... the main TMPGEnc website is at : http://www.tmpgenc.net/e_main2.html - just click on 'Download' at the top.

As for BBmpeg, just go to the page linked to in the tools section (DivX Digest's AVI2MPG2 page), and then choose one of the 'Mirror Link 1' to '3' on the right hand side.

let us know if you have any luck.

cheers,
mcdruid

[burna3000]

Thanks Mcdruid, great help, i've downloaded it now, and got it running, so could you explain what i do now plz?
keep up the good advise!

[theDruid]

burna3000,

I think I already said all you need to do:

Open TMPGEnc (and close the Wizard if it pops up), then goto File->MPEG Tools

The Simple Demux AndThenSome was talking about is the 'Simple De-multiplex' tab. You should be able to use this to split your MPEG(s) into audio and video components, and then put them back together again with 'Simple Multiplex'. This method does fix some problems with issues such as audio sync.

give that a try & let us know how you get on..

cheers,
mcdruid.

[burna3000]

Mcdruid- OK, I've followed the steps, used simple de-multipex and simple multiplex, loaded it into TmpgEnc DVD, then loaded that into Nero to create the DVD

BUT, after about 3-4 mins of creating the disk, it stops, with the error
"invalid block address"

Any ideas whats gone wrong?

[thedji]

I'm having the same problems with any mpg2-source titles i'm encoding...

Using TMPGEnc:
* DivX / XviD -> DVD (M2V + AC3) works fine, no sync problems
* SVCD -> DVD (M2v + AC3/MP2) loses sync seemingly gradually...

The audio/video is in sync to begin with and seems to progressively lose synchronisation throughout the title.

The source MPEG-2 is in synch throught the entire title.

It seems to be TMPGEnc causing the problem, normally I use TMPGEnc to take the MPEG2 and convert it to M2V/MP2 files and then use BeSweet to convert the MP2 to AC3, then mux and burn no problems, and I have tried leaving the audio as MP2 and multiplexing but the problem persists. I've also tried extracing the WAV using VirtualDub first and using that as the audio input into TMPGEnc, but still no luck.

---

I just tried extracting WAV audio from the original MPG and converting that to AC3 direct (no TMPGEnc) and mux'ing with the M2V. It works!!! Audio is perfect throughout the whole movie! The problem seems to be with TMPGEnc's audio capabilities 8)

[yf2001usa]

just use svcd2dvdmpg to burn svcds on dvd..

[FulciLives]

If you have an MPEG-2 source file that you want to re-encode with TMPGEnc (or whatever MPEG-2 encoder you use) then run the MPEG-2 file through DVD2AVI as this will give you a D2V project file and seperate the audio file (which is I think in the *.MPA format if the source will be a SVCD created MPEG-2 file with sound).

Give it a try and see if THIS solves your audio synch problems.

- John "FulciLives" Coleman

[thedji]

And now i've burnt it to DVD+R, and the audio/video is perfectly in sync, but the video playback is jerky on my DVD player (standalone), but it plays nice n smoothly on my PC (in PowerDVD and FreeDVD).

Any ideas??

[theDruid]

OK, I've followed the steps, used simple de-multipex and simple multiplex, loaded it into TmpgEnc DVD, then loaded that into Nero to create the DVD

BUT, after about 3-4 mins of creating the disk, it stops, with the error
"invalid block address"

Any ideas whats gone wrong?

Can I just clarify this?

1. Is it Nero that's throwing the error?

2. Why are you going back to TMPGEnc DVD? I would have thought that after the re-multiplex, you should have a DVD-compliant MPEG stream. (Check this by ensuring that you have not turned off standard compliance in Nero, and importing the MPEG file you have after the re-mux into a DVD-project in Nero.)

I'm not sure what that error means specifically, I'm afraid.

cheers,
mcdruid.

[burna3000]

Mcdruid,
1) Yep, its nero that throws up the error message

2) Im a little confused....
I thought that after using the standard version of tmpgenc to do the simple de-multiplex/multiplex, i then import this into TmpgENc DVD to create the necessry VOB, IFO, BUP files that Nero needs in order to burn it
The 2nd version of each episode with the altered audio is Mpeg, but i didn't think i could straight away use this with Nero?

[theDruid]

sorry mate - i'm not sure how much more i'll be able to help here.

I don't have a DVD burner, and so don't have TMPGEnc DVD, and have never used Nero to burn a DVD. If Nero needs TMPGEnc DVD to create the vobs etc.., then it sounds like you're right & you do need to use TMPGEnc DVD to 'prepare' your MPEGs.

I'm also not sure what the error message from Nero you saw means.

So, sorry - but I don't think I can help any more.

Good luck anyway.

cheers,
mcdruid.