Audio drifting out of sync with video

[vht]

Last summer I filmed a show and also ran my external audio rig as well. I'm now trying to sync up the ext. audio source but as the show goes on, it's drifting further out of sync. How do I fix this? I use Sony Vegas Pro and Adobe Audition.

Here's the specs:

Video source audio:
Dolby AC-3
48,000 Hz
5.1 Surround Stereo


Ext. audio source:
WAV
48,000 Hz
24 Bit Stereo

[Crazytallicafux]

What program are you using to try and sync with? I use Powerdirector 10 and have no problems syncing video and audio. If you want to speed up/down audio download audacity Hope this helps!!

[vht]

I first use Adobe Audition to edit the wav file (Normalize, EQ), then after that I import it into Sony Vegas Pro for video editing.

I was under the impression that if it's 48,000 Hz, then it should match up perfectly.

[Krzych]

Stretch or shorten audio track on the timeline section till it's synced on the whole length. You got to press ctrl button on the end or beginning of each audio track. And then change the length, it also means you'll speed up or -down audio track. Had that problem many times with digicam videos.

[LeperMessiah26]

Stretch or shorten audio track on the timeline section till it's synced on the whole length. You got to press ctrl button on the end or beginning of each audio track. And then change the length, it also means you'll speed up or -down audio track. Had that problem many times with digicam videos.

That is good advice, but never forget that stretching audio compromises quality! I have had it before where after stretching, the audio develops pops n stuff, where as before, the audio was fine.
Also with stretching, after your part is finally in sync, make sure to check the rest of the song as it can throw the rest out of sync too! Which means you have to import the song again, and keep re doing it until all the song is synched up. Which is a pain in the ass!