Audio still out of sync

[l13jeff]

I strip the audio out of my avi file using vdub and save it as a wav file. then when I encode it with tmmpg the corresponding mpg file audio is still out of sync.

Also if i load the avi file as the source video and audio it is also out of sync

Any suggestions?

[ZippyP.]

Did you scan and remove any bad frames first?

[l13jeff]

Yes I have checked for bad frames.

Maybe its just this one movie

Jeff

[ZippyP.]

Does it start out in sync and get progressively worse or is it out by a set amount from the start and stays that way?

If it's a set amount, that can be fixed in TMGEnc. In the Source Range there is a box called audio gap correct. Adjust it up or down and encode a few short clips to test.

If it gets progressively worse then the audio and video durations must not match, check their length. The wav audio can be shrunk or stretched to match with Goldwave. Use the tool in Goldwave called Time Warp. Also, Goldwave can be used to extract the wav file from the Avi. Load the file then select save, it's that easy. You might want to try that as well.

If one part is in sync and one part is not, then you will have to edit the file and correct the part that is not.

Hope that gives you a few ideas.

[wolfrider]

Ive had this same problem with every movie I have converted and put up post about it and with no real answers, but I have found that in my case im splitting the movie into two files for vcd and disc 1 is always right on and disc two is always off, and only way I could fix it was to cut short 3 or 4 minute clips (but with some good close up of a person talking) and adjust the sound in tmpge by going with 2000ms increments, it takes a little time to do it this way but I have managed to get my 2nd disc in good audio sync doing it this way.

Hope this might help a bit Im still a noob myself but was very frustrated with the same problem.

[ZippyP.]

Wolf, a few questions to help diagnose the problem:
Is it the splitting that is causing the out of sync? Are you actually cutting files or are you using the Source Range in TMPGEnc? Are you cutting the mpegs or the source Avi's? Are they in sync before cutting? Can you avoid cutting?

[wolfrider]

I am using tmpge to split them with the source range option and since im pretty much a noob myself splitting is really my only option till I figure out if putting a movie on a single disc is REALLY an option (quality loss and so forth). as for process I'm using a avi file that is good quality with audio totally in sync all the way through the movie. I then extract audio to wave with vdub, then with tmpge I use the original video file and the wav from vdub to convert to two mpeg files using the source range to split them. and so far I have done only 4 movies but each one has come with same results, first disc is fine in sync looks good etc. but second disc the audio file is off, but with no consistancy there, one was -11000ms, one was -425 ms, and the other two were +some odd number of ms. I then once synced put them onto disc with ezcd. But before putting on disc the second disc is already out of sync,,, its out of sync after the tmpge process so before putting it on disc i sync it.

Ive basically come to the conclusion that this must be the norm in video conversion.

[bizeebee]

I use the guide to put them on one disc. I use the video bitrate of 900 and audio (if I have to change it) at 192. They turn out really good. No, they're not DVD quality but VCD will not be DVD quality anyway. I am satisfied with the results and thankful of the guide being posted.

[ZippyP.]

Ive basically come to the conclusion that this must be the norm in video conversion.

No, it's definitely not the norm. I have only one suggestion: Are you using Toolame as the external audio encoder for TMPG. It's much better than the internal one and may solve your problem. Get it from the Tools section and install it into TMPG as instructed there.

Yes, you can put them on one disk as per the guide. If you use 2-pass VBR to encode and don't lower the average bitrate too far then the quality will be the same. VBR for VCD is not a standard though, you'll have to test if it works for your machine. Otherwise, you can lower the CBR bitrate 'til you hit your quality tolerance. I really recommend VBR, it's more bit-efficient and preserves quality.

[daesdaemar]

Maybe I'm dumb, but can someone give a little more info on how to install tooLame into TMPGenc?

[ZippyP.]

" tooLAME is an optimized MPEG-1/2 Layer II audio encoder and You can easily use it with TMPGEnc just goto Options->Environmental Settings >External tool and change Layer2 to tooLame. Free software."

Download into your PC, open and install from the zip file, open TMPGEnc, install as above using the pathname where it is located on your system.

[wolfrider]

Yes Zippy I do use toolame as the audio encoder in tmpge so not sure what exactly the problem is. and thanks Bizee and Zippy for the advice on one disc'n a movie Ill try that. Only reason I wasnt sure of it with the guide that I looked at was the way I understood it was that there was alot of settings that needed to be set on the program used to rip the movie and most the time im not doing the ripping myself. Well not yet anyway until I learn all that good stuff