I suspect that is true. I will try 720P 60fps setting on the Playsport during next tournament to see if that improves. It appears to have in shooting some samples around the house here. The render is 60i and I am experimenting with 24p and 30p renders and the slow motion seems to smooth out. Does that make sense? If clip is native progressive then it must render as progressive. If it renders as interlaced it becomes jerky?
Thanks
Jeff
Evil Eye Productions
http://www.youtube.com/evileye2011
Sony HDR-CX12 Handycams
Sony Vegas Movie Studio 11