audio and video out of sync

[jezter]

I have this problem with a video file in avi format. In the start it works fine but after 30 secs I can slowly begin to see/hear a audio and video out of sync problem. The funny thing is if I pause the video file and then continue then the audio and video is in sync again but then it starts getting out of sync after 30 seconds again. anyone know what the problem is and what I can do about it?

I don't know much about this stuff and if you say I have to use VirtualDub then I got to know one thing... when you fix a file with VirtualDub does it have to play the whole file?

[setarip]

A) If the difference between audio and video is constant throughout the video:

Load the file into VirtualDub, VirtualDubMod, or NanDub.
Set BOTH "Video"(VirtualDub, VirtualDubMod and NanDub) and "Audio" (VirtualDub and NanDub - VirtualDubMOD>"Streams>"Stream list") to "Direct Stream Copy".
From the "Audio" dropdown menu, select "Interleaving" (For VirtualDubMOD, rightclick on the listed audiostream and then select "Interleaving")
Under "Audio skew correction", set an appropriate number of milleseconds (positive or negative) in the box labelled "Delay audio track by"
Save with a new filename

B) If the difference increases as the movie plays:

From under the "Video" dropdown menu, select "Framerate" - and select "Change so video and audio durations match"

Let us know of your success ;>}