Multiple Tracks - few out of sync!!

chapfilmguy wrote on 5/14/2003, 5:11 PM
I have edited a sound project in Vegas with one video track already cut together. I have about 34 tracks of music / ADR / sfx, etc that i edited together without any problems.

As soon as I rendered the project to a .wav file, some of the sfx became out of sync. But only a few. Now when i playback the project from the timeline, it plays the same sfx out of sync even though they are obviously in sync. I watch the timleline marker as it passes the actual sound effect and it plays it at a different time.

I've tried this on a different computer with the same project and it does the same thing. I can't adjust the individual sounds either because each time i play it, it is out of sync by different amounts of time. Very strange. Any help would be appreciated.

I've also messed around with the buffer settings and other things, only to get the same result. I thought maybe my comp wasn;t fast enough to play it back correctly, but as i said before, when i export the project, it exports those same exact sfx out of sync. Thanks for the help!!

~Vince
Vince@cuphitau.com

Comments

JohanAlthoff wrote on 5/15/2003, 9:11 AM
Any plugins on those tracks that might cause a delay?
makroes wrote on 5/15/2003, 9:26 AM
I have had the same problem in ACID 4 and VV3. Some elements get out of synch, even though the waveform shows them as being in the right place, and no matter what I do, I can't get them right. I have moved them a little bit forward or back, and it has no effect. I have moved them a lot and it does have an effect--it puts them where I moved them to which is in the wrong place.

I have had to start over to get them to work right.

It seems to happen when I want to add something like a reverb effect to near the end of a track so that the end sounds like an end instead of a sudden stop. The effects sometimes (not always) won't go in where I want them no matter what I do. They will very happily go in at any point I don't want them to, however!

-mak
chapfilmguy wrote on 5/15/2003, 4:31 PM
I have reverb on some of the tracks, as well as some pitch shifts, but nothing that I don't have on other tracks. My best option right now is to export the project without those sfx files and put those in later, in another program. Sucks, but thats the only way I have to fix it right now. I'll post any info if i find a solution for this. Maybe SOFO could help me out???? =)

If anyone else has any other solutions, let me know. Thanks.
jnormous wrote on 5/16/2003, 7:15 AM
are the tracks that are falling out of sync - loops that are dragged across a track (using vegas' loop option)? and if so, is the audio falling out of sync gradually over time or is it immediate?
momo wrote on 5/16/2003, 11:00 AM

Although it's a bit of a pain in the a$$, you could always render each track individually with fx, then pull the whole thing back together again so you can playback without the CPU overhead required for the FX. This assumes that you do not have the same problem when soloing an individual track. May at least help you find out where the problem lies, and at the very least you can finish your project.

Posting your hardware setup (PC, RAM, audio device etc) and software setup (OS, version of Vegas, etc) will also let the talented people here help you further.

momo
SonyMLogan wrote on 5/16/2003, 3:30 PM
When you say you have “pitch shifts” on some tracks, do you mean you are using a pitch shift plug-in? Or do you mean you are using Vegas’ event-level time stretch?

Pitch shift plug-ins on tracks (or busses) could be the source of the problem. If you are using the pitch-shift plug-in to play back audio a little faster or slower then you can expect a difference in event alignment between a rendered file versus a “drop the cursor and play” scenario.

If you are using Vegas’ event-level pitch or time stretching, then I would recommend you use the latest version (4.0c) there was a bug in previous versions where stretched audio would tend to drift out of alignment for some settings.