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MPEG-2 Configuration
VBrick MPEG-2 Appliance Admin Guide 17
Creating a Billboard
A billboard that fits on one screen (640 x 480 resolution) can be created using the following
HTML tags:
The billboard text generated by the browser is Times Roman. The Font sizes supported are
<Font Size = 1> to <Font size = 7>. Background color and images are also supported. The
standard HTML 16 color palette can be referred to by name, and other colors will be
matched to the nearest color of a standard 232-color template. When creating billboards,
please test your billboard for effect on all types of monitors on which it is going to be
presented. S-Video output and Composite output from the V-Brick are supported.
Video Input
S-Video output from the VBrick to S-Video Input on the television yields the best picture to
the TV monitor. If you do have S-Video input into your television set, it is recommended you
use the S-Video output from the VBrick to the television. Most televisions also support
composite input. The overlay image as used in the billboard can sometimes have the effect of
"flicker" if the font is too small and used on a regular television. This is a product of the
output video signal and the television. On higher-grade monitors, the effect is significantly
reduced.
Font Sizes
It is recommended that font size 5 be used on the billboard. The VBrick has two types of
video output signals. If S-Video out is used, the picture is significantly better than the
Composite out. Text and graphics tend to appear sharper and do not flicker in S-Video as
much as they do in the composite out. If a flickering effect makes your font unreadable,
make
it larger. Making the font bold or <STRONG> will reduce the effect of the flicker.
• The drawing area for Billboard is about 600X400 pixels.
• With a font size of 7, 8 lines of text fit on the screen.
• With a font size of 6, 13 lines of text lines fit on the screen.
• With a font size of 5, 18 lines of text fit on the screen.
Transparent Background
A web page can be created with a transparent background. The video will show through and
any text or images will appear on top of the video. A custom META tag is used to support
this feature. In the <HEAD> portion of the HTML page, enter the following. The chosen
background color will then be overwritten by the transparent color.
<META HTTP-EQUIV="TRANSPARENT" CONTENT="YES">
A
AREA
B
BASE
BIG
BLOCKQUOTE
BODY
BR
CAPTION
CENTER
DD
DIR
DL
DT
EM
FONT
FORM
FRAME
FRAMESET
HEAD
H1
H2
H3
H4
H5
H6
HR
HTML
TH
TITLE
TR
U
I
IMG
INPUT
LI
MAP
MENU
META
NOBR
NOFRAMES
OL
OPTION
P
PRE
SCRIPT
SELECT
SMALL
STRONG
STYLE
TABLE
TD
TEXTAREA
UL