Customizing filters
Corel VideoStudio allows you to customize video filters in a variety of ways, such as by adding key frames to your clips. Key frames let you specify a different attribute or behavior for your video filter. This gives you the flexibility to determine how your video filter will look at any point in a clip and to vary the intensity of an effect over time.
To set key frames for your clips
1 Drag and drop a video filter from the Library onto a clip on the Timeline.
2 In the Options panel, click Customize Filter on the Effect tab.
The dialog box for the video filter appears.
Note: The available settings are different for each video filter.
3 In the Key frame controls, drag the Scrubber or use the arrows to go to the frame where you'd like to change the attributes of your video filter.
Note: You can use the mouse wheel to zoom in or out of the Timeline Control bar for precise placement of key frames.
4 Click
Add key frame 
to set that frame as a key frame in the clip. You can adjust the video filter settings for that particular frame.
Note: A diamond-shaped mark
on the
Timeline Control bar appears and indicates that the frame is a key frame in the clip.
5 Repeat steps 3 and 4 to add more key frames to your clip.
6 Use the Timeline controls to edit or to go to a key frame in the clip.
• To delete a key frame, click
Remove key frame 
.
• Click
Reverse key frames 
to reverse the sequence of key frames on the Timeline such that the sequence starts with the last key frame and ends with the first key frame.
• To move to the succeeding key frame, click
Go to next key frame 
.
• To move to the key frame prior to the one selected, click
Go to previous key frame 
.
7 Click
Fade In 
and
Fade Out 
to establish fade points in your filter.
8 Adjust the video filter settings according to your preferences.
9 Preview the changes you've made by clicking
Play 
in the Preview Window of the dialog box.
10 Click OK when finished.
Note: To preview the clip with the video filter applied, use the Preview Window or an external device such as a TV monitor or DV camcorder.
To choose the display medium, click
, then click
to open the
Preview Playback Options dialog box.
