CICLOPS: Cassini Imaging Central Laboratory for OPerationS
Sector 6

Titan's South Polar Vortex in Motion
Andrew Planet      
12-31-2012  16:36:30

That teaches me not to just view the video! I quote above ''Cosmic ray hits on the camera detectors appear as bright dots in some frames of the movie.''
Andrew Planet      
12-31-2012  16:23:15

I keep seeing far more than two spots, say eight to nine simultaneously at least and at different intensities of brightness. Maybe its like sprites or as in the following web article