[PD] Clearing pix_delay buffer.

[Jim Ruxton]

I was wondering if there is any way to clear the buffer in Gem's 
pix_delay . If I send video to it a second time the frames of video I 
previously sent to it remain in the buffer. Is there a way to start 
fresh each time I send it video rather than keeping the old video in 
it's buffer. I was hoping to be able to send it a clear message or 
something similar.

Thanks,

Jim