I record gameplay with my Hauppauge HD PVR to a MP4 format.
When playing back the MP4 with VLC player, the sound is there and it is in sync.
In vegas when I load the video's, the audio behaves strangely
example(yes, there muting all the sudden is a problem as well):

Some video's do work fine. It seems the sound just cuts off at one moment, and gets repeated later :O

Any solution?
Thanks in advance!