Media objects, such as picture, video, live video or text objects allow keyframe control for dynamic color changes of the corresponding image information on the screen. Color control can be used for the following applications:
Correction of images or videos
Color effects caused by an extreme change of color values
For control via keyframes you need to add a control track to an object which allows setting of keyframes. Key frames are actually markers containing values for image manipulation. In our case this is a color used for image filtering. The area between two keyframes contains consecutive in-between values which become visible as continuous color change.
And this is how it is done:
Right-click the object whose picture or video is to be controlled and select Control tracks. In the dialog box popping up, place a checkmark next to Color (Red, Green, Blue) and click OK.
Double-click the control track to set a keyframe.
If the screen is not open, open it now by pressing F10. Right-click the keyframe and select Properties.
In the Properties Dialog you will find fields for numeric entry of color values for Red, Green and Blue, as well as a field which displays the resulting filter color. By default it is white, i.e. without color manipulation, which is 255 in accordance with RGB values.
For color selection click the color field, which presumably will still be white. The following dialog will make color spaces RGB and HSB available for color selection.
Grab one of the small squares in the corners with the mouse and drag it to choose the corresponding color. If you want to correct an image, the HSB color space is the better choice. But, actually, this is a matter of opinion. The effect is immediately visible in the screen window. Once you have found the corresponding setting, click OK.
The color white can be changed into any other color by applying filters. Therefore, you should design image elements (arrows, writing, etc.) in the image file in white and then set the corresponding color by applying this function at a later time.
The filter color will now be visible in the color field. Click OK. If the selected color is to be transferred to the entire object click . If the values are to be transferred only to the beginning or the end of the object click or .
For dynamic and time-dependent color changes, add another keyframe (e.g. in the last third of the object) and enter a different screen field size and position.
When the object is played, the colors will change in accordance with the keyframes. Possibly, the standard settings will still apply to the beginning and the end of the picture. In order to solve this problem you can copy the values of the adjacent keyframe and paste them into start and end frame.
The opacity of the object image while editing the keyframes can be selected under Edit display: 50 %, 75 % or 100 % are possible. From object takes over the ramp band value.
Key frame values can be copied and pasted to other keyframes by right-clicking the keyframe and selecting Copy values and Paste values.
You can now choose whether new objects are to be created with control tracks for keyframes or not. See Objects - Global Options - Objects.
You can make image movements softer and more harmonious if you use tool SmartMove Keyframes or select this property in the Properties Dialog under Ramp type, following which a smart factor will be enabled. Entry of values between 0 and 100 allows you to influence acceleration: With a value of 0 the movement starts abruptly and the speed remains constant, while with an entry of 100 movement starts very softly while the speed is accelerated markedly. SmartMove properties, however, cannot be selected for Start and End frames.
The keyframes of the objects usually refer to the screen, i.e. they have absolute character. However, you can also use relative keyframes referring to the screen field. If you move the screen field or change its size, all objects with a control track for size and position output to this screen field are also modified in terms of size and position. See Properties of Picture tracks or Video tracks.
See also
Motion: Position – Zoom - Rotation