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Windows Media Player and DirectShow Support Rev NS001b004
Advanced Color Adjustments
VGA graphics need to appear over DVD/MPEG windows when the
mouse or a window is moved over the video window. To effect this, the
NetStream 2000TV uses the well-established chroma key technique,
similar to the blue-screen effect often used in filmmaking. Under this
technique, video only displays where an assigned chroma key color
appears. For practical reasons, the color assigned to the chroma key is
chosen from those that are unlikely to be used by other Windows
programs.
NetStream 2000TV software assigns a dark green color as the default
chroma key color. This section explains how to assign a different chroma
key color if the default color conflicts with another application or is
incompatible with your VGA display.
Modify the chroma key color only if:
• A different chroma key color is desired, or
• MPEG video cannot be viewed on the VGA screen, or
• VGA graphics seem to bleed through the MPEG video.
1.
Start DVD Station and play an MPEG video. Even if the video is
not visible, audio should be audible.
2.
Navigate to Options>Settings>Advance>Color Adjustment.
3.
Select a key color from the Choose key color to set menu.
4.
Select the last menu item -- Add Custom Color -- to choose a key
color not shown in the menu. The
Key Color Settings
dialog box
(Figure 27) will appear. Enter a value between 0 and 255 for each of
the red (R), green (G), and blue (B) values of the chroma key color
desired. MPEG video should appear in a space in the color chart as
well as the border surrounding the color chart.
Figure 27. Key Color Settings
Note 27.
If you are not able to view MPEG video at all, there are several things
you should try before changing the chroma key color: make sure that the
monitor is connected to the DVD/MPEG-2 Playback Card, powering off the
computer and try again after restarting, or double check the Border Adjust and
Color Calibration procedures.
