The answers provided here don't actually apply - the slingbox can does NOT have an HDMI input - therefore you suffer from quality loss - the question was about capturing HDMI. there are several analog solutions - but lets be real - not a solution.
the question: how do you record HDMI 1080p (or other) output from a directv box into the computer; for editing and viewing later.
Analog solutions are ... well the 90's
First of all you have revived a thread from January 2009. OP is no longer concerned with any solution you are referring to. Second of all the answers given certainly do apply. Read the threads before replying and in the future try not to revive old threads where the OP is no longer present on the Forum.
""What is the best recommended way to watch HD Satellite TV, not record, on my HTPC?""