4. Fancy Filter Tricks, Part II In this exercise, you will learn how to keyframe a filter.
1. | If Final Cut is not running, start it and open Chapter 11 Lesson. Double-click Seq Video Fancy Filter 2 to load it into the Timeline. | 2. | Select the clip and choose Effects > Video Filters > Stylize > Posterize. Double-click the clip to load it into the Viewer and click the Filters tab.  | 3. | Position the playhead at the beginning of the clip and set a keyframe for all three colors (Red, Green, and Blue). | 4. | Move 30 frames forward (type +30 and press Return) and set a second set of keyframes for all three colors.  | 5. | With the playhead parked on the second set of keyframes, change the Red value to 6, the Green value to 5, and the Blue value to 7. (If you have an image that is varying shades of black, white, or gray, you will get a more interesting posterization effect if the three color values are different.)  | 6. | Press the Home key to move the playhead to the first set of keyframes. Set all three color values to 100. | 7. | Play the clip, although you may need to render it first.Just as you can keyframe motion, you can also keyframe filtersexactly the same way, with exactly the same navigation and control. This provides an enormous amount of control over your effects.One other note: applying filters is mostly an art, not a science. There is no magic setting that you should use. If it looks good, in the context of your sequence, it probably is. Just remember to use your scopes (press Option+9) to make sure your video levels are within safe boundaries for white level and chroma. | 8. | That's it for this exercise. Save your work. Quit Final Cut if you want, but there's lots more good stuff still to come. |
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