hi all, my dad gave me a sony handycam today its a DCR SX30E, it's not HD which I'm not to bothered about seen my dad gave me it

anyway a few questions, I'm using imovie to import and edit my videos and somehow I managed to create an HD movie and I can't remember how I did it??
can imovie really create an hd movie when the source files were not hd to begin with??
also why is there not an option to export to apple tv in hd? seems strange when most of us with apple tv have it attached to an hd tv.
anyone clear these up for me???
anyway here's a video I made earlier nothing to good I was just trying the camera out
http://www.youtube.com/watch?v=OrPEv-D-ST0
the watch in hd option is there so is this hd or not

anyway a few questions, I'm using imovie to import and edit my videos and somehow I managed to create an HD movie and I can't remember how I did it??
can imovie really create an hd movie when the source files were not hd to begin with??
also why is there not an option to export to apple tv in hd? seems strange when most of us with apple tv have it attached to an hd tv.
anyone clear these up for me???
anyway here's a video I made earlier nothing to good I was just trying the camera out
http://www.youtube.com/watch?v=OrPEv-D-ST0
the watch in hd option is there so is this hd or not