revVideograbber CPU use

[Martin Koob]

When revVideograbber is previewing or recording the
 CPU use on my Mac Book Pro (2.2 Ghz Intel Core 2 
Duo)  spikes up to about 105 %.   (This gets the fan 
running quite high) I have checked other apps that 
record video.  Quicktime player goes up to over 150% 
when previewing or recording.  Another  application 
BTV Pro, (www.bensoftware.com) which when 
recording the CPU use is around 100 - 147%  but when 
previewing is only about 25%.   


Is there a way to reduce the CPU use at least during 
previewing?
While previewing or recording with revVideograbber 
I have a repeat loop to call the revVideoGrabIdle with 
a 'wait 1 millisecond with messages' command to  
give proccessing time for other processes.   Is this a 
factor in the CPU use.   Is there a best practice in 
terms of how often to call the RevVideoGrabIdle 
command?

Thanks for any comments.

Martin Koob