Sony DVD Rom/DVD Video - Manual (Page 18)

18
2. DVD-Video
2.3.20 Colour Depth
The highlight must be an indexed, 8 bit, 256 color TIFF
file. Since DVD specifications allow 4 colours in a high-
light at any given time, even though this file has 256
colors in its palette, the actual graphic can only have
4 colours. One of these colours is keyed out to show
transparency. The remaining can be any three colours
in the spectrum. The figure below is a screen shot of
the palette of a highlight file. If you can’t access this
option in your graphic program, the file is probably not
indexed or has the wrong colour depth. Note that only
the first 4 colours of the palette are in use and the
remaining are blank. This is the only acceptable format
of the highlight palette.
The DVD specification also allows any menu page to
have a palette of 16 colours. This allows for different
”not highlighted state”, ”highlighted state” and ”acti-
vated state” colours. The figure below shows two
images, a ”highlighted state” and an ”activated state”.
Please note that the total number of colours (including
black and the registration mark) is more than four.
However, at any given time the image has only four
colours.
2.3.21 User Interface and
Delivery
2.3.21.1 Printouts
Colour printouts of all backgrounds must be provided
for reference. One printout should be provided to
demonstrate the effect of the highlighted state and one
to demonstrate the activated state. If these are diffe-
rent for the Main Menu, Audio Menu, Subtitle Menu,
Scene Selection Menus and Special Menus, then two
printouts must be provided for every unique colour
combination demonstrating both highlight and active
colours.
A hard copy of the text or PDF files should also be pro-
vided along with a printout of the disc contents.
2.3.21.2 Navigation
Non-standard navigation must be explained on paper
and a text or PDF file. For complex navigation, it will be
necessary to contact Sony SDCE.
2.3.21.3 Media
PC Formatted ZIP or CD-R