🚀 go-pugleaf

I am interested in purchasing a board for the Mac II which will allow me
to project graphics on top of video images which would (of course) be
fed in from an external NTSC device such as a videodisc player, VCR,
video camera, etc.

The brochures I have from various video board companies are less than
clear [to me at least] about whether they can do what I want.  Any
pointers, references to products, or other information would be
appreciated.

* The overlayed image can be displayed on the Mac monitor or on an
external video monitor, but on-the-Mac would preferred (subject to the
concerns listed below).  (Some boards export Mac graphics while others
import video images (the so-called "frame grabbers").)

* Real-time (30 frames per second) or near-real-time image display is
not necessary, but would be preferred.  However, I must be able to grab
an image and display it in < 5 seconds.  (I gather that a number of the
less expensive frame grabber boards fail this test.)

* It's unclear how significantly the image degrades when going from
video to Mac.  (Here, I'm more concerned with the different pixel
density than the loss of color information (which is subject to the
pixel depth being used).)


-- 
unsigned *Wayne_Mesard();    "A thousand pounds?!  That's almost a ton!"
Mesard@BBN.COM               
BBN, Cambridge, MA                                                   -MS