Virtual Dub out of sync?

[smreid]

Hi

Can someone help me. I have an avi file which is XVID Mpeg-4 Video and MPEG Layer-3 Audio. The audio and video are perfectly in sync. I was using virtual dub to split the file into two smaller files. I split the movie and saved the first part as movie1.avi and the second part as movie2.avi. The problem is now that movie1 is in sync but movie2 is not

Please help

Thanks in advance

Stephen

[zodiac]

dont use the buttons on the bottum to move the frame.
if that isn't it then:
save the wav of the whole file.
use the wav as the audio sorce then cut.