Video Capturing iPhone 4 Screen Movement

[RSSZ]

I have a cable to attach to the iPhone 4 with the 30 pin connector that converts to composite video out with two audio outs as well. When connecting to a digital PVR to record the screen movement on the iPhone the digital PVR appears not to receive anything from the iPhone (Black Screen). Is there a special software App that runs on the iphone to do this? I don't want to export youtube videos or movies. I need to capture the motion of the activity on the phone while performing various tasks not just screen-shots that the iPhone is capable of. Any insight/assistance is much appreciated. Thank you...