My client has still frames within a DVD presentation. There are matching stills used as menus throughout the presentation. My problem: The menus are maxed out at full RGB (white - 255). When I use the similar stills as part of the DVD footage, and had to ramp their levels down, and even at 115% IRE, they appear much grayer than the menus.
What is the max IRE levels for a still used in footage? 90% of the area of these stills are white....so it affects virtually the entire screen.
Just a tip. I've had to mix quite a few photos and photoshop created graphics with real video on a project where white was the theme for all the product shots and graphics. I simply created a photoshop action that included only a "levels" adjustment. Then I used the automate function to batch the levels adjustment to entire folders of pics and graphics. I knew the whites were 255 and blacks were 0 on all the pics and graphics so I simply set the levels to max white (in my case I was matching 90 units so it was 229. In your case, you'll want the full 100 units for max whiteness so you'll use 235), and I also set the black to 16. 235RGB Max and 16RGB Min are broadcast safe for NTSC video.