Just use the text generator in Vegas, write a white "." (dot) in the middle of the screen, add some black outline to overlay the crosshair, and adjust the dot in the real middle of the screen using the pan/crop settings.

Violent Reflection : (.) Victorian LET - size : 12 - effects : draw outline (black / feather 0.01 / width 0.01) - pan/crop settings : Y Center 243 (NB : project properties : 856*480)
The Dogs Got Pwned : (+) Arial - size 8 - effects : draw outline (black / feather 0.01 / width 0.01) - default pan/crop