COD Frag Movies

[Maka]

they use ingame recording system to record their gameplays and hide the wallhack. Im more than sure that these pro mod nerds use wallhack, they always seem to aim there where the enemys are coming even from far distance before they even see them. 

or they're just spraying through every wall in the map hoping that there is an enemy hiding there

Yeah wallspraying/banging happens. There's wallhackers out there for sure, I've seen enough.
Even had one today, after a while it got obvious. I was spectating him cos he was on my team.
I just wonder how they don't get caught by PB, though.