OK I got a Hauppauge HD PVR and own the 2010 Unibody MacBook. I record my MW2 gameplays through HD Capture then upload them to Imovie and edit. After I edit them I upload them straight to youtube via Imovie but once you upload them and view them the video at certain points goes jittery its weird and spoils the vid. YouTube - GB II 1 v 3 Clutch Fail Here is one of the vids as you can see after my first kill its goes jumpy and jittery ANY SUGGESTIONS