Resistor wattage for HDMI hack
You can't get 10mA at 5VDC through a 1k resistor.
You can get max of 5mA  (5V / 1000ohm = 0.005A)
Power is I^2 * R:   0.005 * 0.005 * 1000 = 0.025W

You need a minimum of 1/40 of a watt.

Commenters are correct, I meant minimum, not maximum, but I'm fuzzyheaded sometimes :)
Thank you Commenters!