Visual Circuits Mantis Media Gateway, Руководство пользователя

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❏
Auto Key
- Mantis assumes that the color in the upper left
corner of the graphic is the background color and selects it
to key out.
❏
RGB
- Manually select the color to key out by entering its
RGB (Red, Green, Blue) values into the designated fields.
10. If desired, adjust the time (in seconds) at which the graphic
overlay fades in and/or out on the screen.
11. If desired, select the position on the screen to place the graphic
overlay, example, bottom-left.
12. If desired, use the check boxes on the right side of the screen.
The check boxes correspond to each of the graphic overlay
properties. These check boxes can be used to copy the
properties in their associated frames to all of the existing
graphic overlays across all channels in a playlist. For example,
to ensure that all existing graphic overlays for a given playlist
always appear in the lower right corner, set the screen position
attribute to right bottom and check the
Apply to All
box to the
right of that frame. This may be done for some or all of the of a
graphic overlay’s properties.
13. Click the
OK
button to save the changes and to return to the
Playlist Editor screen.
Removing Residual Background Color
The best backgrounds to key out have a single, uniform
color with no pattern. If, after using Auto Key, there is still a
residual color, i.e. specks of the background remain, then
use RGB.
Fade Times and Apparent Fade Rates
A complete fade from solid to invisible goes through 16 levels
of transparency. An overlay’s
apparent rate of fading depends
on its transparency. Example: two overlays, one solid and the
other 60% transparent fade are set to fade out in 5 seconds.
They do, but the solid
appears to fade faster because it goes
through more levels of transparency.