Turn an HDMI(out) into an HDMI(in)?

Basically, I have a DVR for a security system and the resolution is too high for my tv. I need to either by another set of cables to hook it up so I can change the resolution of the DVR lower, or some genius here will tell me how to turn my laptop which has a high resolution but only has an HDMI(out) into an HDMI(in)

After reading the above paragraph I know it sounds a little wordy. Let me state the underlining problem clearly.........I have a laptop with an HDMI for (Out) only. I want to reverse the role and turn it into an (IN).

 

i don't think it's possible to use your laptop hdmi for input as it would be part of the graphics card and not attached to the monitor

on the back of the dvr there should be monitor composite out via a bnc connection
bnc to phono adapters are easily available for plugging a straight phono lead into more or less any tv

 

Yes, I believe that is the cable I am trying to avoid buying.