VideoGrabber: dropping last second of sound

[Ben Rubinstein]

We've used LiveCode to create an unattended system in a public environment 
which is recording several hundred short video clips a day.  The clips are 
variable length - controlled by the person who is recording a message - 
typically 10-30 second each.

In a small number of cases, the last second of audio is lost.  The actual 
sound track is shorter than the video track; and in the very small sample of 
cases I've so far being able to inspect (2 clips) it was almost exactly 1 
second shorter.

Has anyone else encountered this or a similar problem?

TIA,

Ben