Instruction manual
8
The following are some things to note when using some of the options available in the
Zoom menu:
• This program doesn’t enlarge video, it only shrinks it. As such, text mode (720 x 480
or similar) won’t be enlarged to ll your screen.
• The toolbar is automatically disabled when you select a zoom percentage below
50%. When you zoom out and return to a larger screen size, you need to manually
enable the toolbar.
• Unusable parts of the window are displayed in grey. This happens because the video
is scaled by an integer factor of 1/16 and because of other rounding issues.
About the Video menu
The following options are available in the Video menu:
• Auto ne-tune picture. Select this option to automatically adjust the sampling
phase of the video. This option makes the picture sharper and reduces USB trac.
The picture will freeze for about one second while the calibration is performed.
• Video Settings. Includes the following options:
• Picture Positioning. Use the four arrows to ne-tune the position of the video
image, similar to the centering controls found on video monitors. The adjusted
values are automatically used whenever this same video mode is displayed
again. To automatically center the video image within the program window,
click Auto. To save your changes, click Save.
• Sampling Phase (Sharpness). Use this option to override the automatic phase
adjustment. To apply auto phase again, click Auto. The numbers shown under
the slider represent the phase (angle) of the control. To save your changes,
click Save.
• Noise Filters. The hardware uses two lters to reduce USB trac and improve
picture quality. The rst Noise lter helps to remove speckle noise. This lter
doesn’t usually display a visual eect, except when you move the mouse
at high values, some pixels may be left behind. The second Flatness lter
converts regions that are nearly all of the same color to the same color to aid
with compression. At higher values, color banding is much more visible. By
default, both lters are enabled and set to 1. You can override these settings
and also save customized settings that apply to all of the video modes. To save
your changes, click Save.
• Color Brightness. Move the sliders to x dark or over-saturated colors. To
automatically adjust the color, click the Auto button. To return to the default
factory settings, click the Default button.