CompuServe Messages

Hi Maura, Gee, who are those TV people. Yes, they will look down their noses at VHS, but we do this all the time. They need to put the VHS machine through a "frame-shaker", a TBC, or in layman's terms, a Time Base Corrector. Then they need to put the signal from the TBC through a DVE (Digital Video Effects machine) or an ADO (Ampex's version of a DVE) and pull it up just a bit to get rid of any head switching and abnormal horizontal blanking. If they have none of the above, they have an interesting low-rent post house and shouldn't be looking down their noses. If they are really low-rent and you have to solve the problem, you need to fine someone with a PAR and 3D Studio, which will be you next lowest cost solution. In the future, it is not particular colors that are the problem in NTSC, but saturation and luminance. For reds and blues you want no more than 70% saturation (75% on the outside) and for whites, yellows and cyans you want no more than 90% luminance. As a general rule you want no more than 70% saturate for all colors and you should be fine. The TBC also fixes the color problem. It can adjust blacks (7.5 IRE), overall video level and color saturation and hue. Now let's discuss the issue of safe action and safe title area. Safe action is the center 90% of the screen and safe title is the center 80% of the screen. The example for safe title is as follows: 640 x .20 / 2 = 64 pixels of border on each side of the horizontal 480 x .20 / 2 = 48 pixels of border on top and bottom of the vertical resolution — | 48 | |-64-+——512——-+-64-| | | | 384 | | | + | 48 | — This holds true for any resolution, 800 x 600 or 1024 x 768. I naturally mean that you will be changing out the 640 and the 480 in the formula. And, and, and for horizontal lines, you want to make them as absolutely three pixels thick at least and preferably antialiased. Bryce Whiteside CF/X Image, Inc. at the big red stick animation outpost down south