Through life I've edited many domestic videos on many platforms, however I seem to be having a few probs with the (by comparison) improved new quality possible on the P4. I'm having probs playing the footage shot whilst flying via my (fairly new) laptop. Just what are the required, not the 'best' specifications, just required specification to play these recordings, they are at the moment very slow and jerkey unless I down-grade the resolution with my video editor.