VirgaVideo allows you to change the color of videos and pictures. This
effect is key-framed, so you can have the video fade to red,
then to green, and back to normal. NOTE: This option a
special effect, and should not be used as a general purpose way to
correct the color of a picture or video. Instead, use the
levels adjustment tool.
To use the color key-framing tool, right click an object and
then select Edit...Colors.
The color key-framer (see picture below) is shown, and you can
change the picture or video color.
All
videos and pictures initially start with a single white key-frame at
the beginning (see picture to the left). A white key-frame
means that the object will not be tinted, while colored key-frame
means that the it will be tinted to that color.
Clicking
a color will insert a new key-frame at the current time. In
the picture to the right, a purple key-frame was added by clicking
the purple color while the video time was set to 4.54.
Interpolation:
When there is more than one key-frame, the colors will be
interpolated (i.e. they will fade smoothly from one color to the
next). In picture to the right, several key frames have been
added. The video will be un-tinted (i.e. a white key-frame)
for the first 3.5 seconds. It will then fade to purple (over
approximately one second) and then fade to blue, and then fade back
to being un-tinted.
Insert/Remove/Cut: The Insert button will insert a
new key-frame at the current time with the currently interpolated
color. The Remove button will remove the key-frame at the
current time (in the picture above, the currently selected key-frame
is highlighted in pink). The Cut button will insert a
new key-frame at the current time with the currently interpolated
color, and then remove all key-frames thereafter.
Transparent/Solid: The Transparent button will make
the object invisible, and the Solid button will make the
object visible. This can be used to have the object fade in
and out of existence, like a ghost. NOTE: If you want
the object to exit the scene by fading away, you should use the
object exit function instead.
Background Color: When editing text, you can select the
background color.
Undo: All changes you make are saved, and you can undo
them by pressing CTRL-Z. To redo the change, press
CTRL-Y.
Multiple Objects: You can edit the color of multiple
objects at the same time by selecting more than one:
Video Color Demo
Copyright (C) 2010 by Jeremy Spiller, all rights reserved.
All
videos and pictures initially start with a single white key-frame at
the beginning (see picture to the left). A white key-frame
means that the object will not be tinted, while colored key-frame
means that the it will be tinted to that color.
Clicking
a color will insert a new key-frame at the current time. In
the picture to the right, a purple key-frame was added by clicking
the purple color while the video time was set to 4.54.
Interpolation:
When there is more than one key-frame, the colors will be
interpolated (i.e. they will fade smoothly from one color to the
next). In picture to the right, several key frames have been
added. The video will be un-tinted (i.e. a white key-frame)
for the first 3.5 seconds. It will then fade to purple (over
approximately one second) and then fade to blue, and then fade back
to being un-tinted.
