[AG-TECH] Vic Windows Coming & Going

Robert Olson olson at mcs.anl.gov
Wed Apr 17 08:39:48 CDT 2002

At 09:14 AM 4/17/2002 +0100, Mike Daw wrote:
>We seem to be getting a problem we've not seen before. Namely vic windows
>disappearing and then immediately reappearing as a new thumbnail on our
>display machine. This seems only to happen to one video feed at a time (i.e.
>not all windows at a site), but was happening yesterday to all participants
>at one time or another.

The only time I've seen that was in a VRVS session once. Is this through 
one of your bridges perhaps?

>Does anyone know what causes this? And, better still, is there a solution?

Vic will drop the window when it thinks the stream is done. This could be 
because it received an RTP BYE packet, or if the stream has not received 
any traffic for a time. I'm not sure what sort of flaw in the video stream 
would cause this. Catching a chunk of it with rtpdump for analysis would be 

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