The DVD specification requires all video, including stills and menu graphics, to conform
to the NTSC or PAL video broadcast standard for allowable colors. In order to support
broadcast bandwidths, NTSC and PAL video must use colors that are substantially restricted
compared to those your graphics program can create. It’s important to work within the
broadcast standard, because pictures and graphics that look fantastic when viewed in a
graphics application can look very different when viewed on a DVD. Highly saturated
colors create the biggest problems and produce the biggest disappointments when
viewed on a video monitor.
Before importing your pictures and graphics, be sure to open them in a graphics
application and use a filter to constrict the colors to NTSC or PAL color space.