This is a neat little program. I noticed a couple of limitations:

As the number of lines increased, the amount of the camera's field of vision that's acknowledged decreased. At the default, only the left half of the window was converted to ASCII; the other half was blank. Increasing the number of lines reduced it to only the lower-left quarter; and so on.

Also, is there a way to save the conversion, either as a TXT or MOV file?