Apple Final Cut Express HD Manuale Utente Scaricare il pdf (Pagina 7)

Keyframes

Suppose you wanted to create an eﬀect in which a lter was gradually applied to a clip over a certain period of

time. How would you do it? With keyframing. For example, suppose you wanted to apply a blur lter and, over

the course of ve seconds, transform an image from crisp to blurry. First, double-click to select the clip (in the

Timeline or Browser) and apply the lter by choosing Eﬀects > Video Filters > Blur> Soft Focus. en, click the

Filter tab in the Viewer to reveal the lter's control panel. Notice the button directly next to the Radius slider.

In the Timeline, move your playhead to the start of the clip (make sure snapping is enabled- press ‘n’). en,

back up in the Viewer, click the Insert/Delete Keyframe button (looks like a little diamond). A dot appears in

the Filters tab -- the is the keyframe. Move the amount slider down to '0.' en, back in the Timeline, move the

playhead to the very end of the clip, and add another Keyframe. Move the Amount slider back up to 100.

Playback the portion of the Timeline containing the image, and you should see the image gradually change

from sharp to blurry. Many facets of Final Cut can be keyframed, lters, motion, etc.

Working with Keyframes from the Timeline

On the Final Cut Timeline, notice the series of buttons located in the lower-

left corner of the Timeline window (see illustration on the left).

ese can be used to enlarge the Timeline and show/hide items such as

keyframes. is can be handy for making minor keyframe adjustments, as the

user can simply perform edits in the Timeline instead of using the clip editor.

Working with Audio

One of the best reasons for using Final Cut instead of iMovie is

the exibility with which you can work with audio. When you

double-click on a audio clip that’s in the Timeline, it appears in

the Viewer. Here you can keyframe the audio, much in the same

way you can in the Timeline, but for subtle changes it’s easier to

work in this window.

Also experiment with the Pan, for mono tracks, this determines

where in the stereo eld (from Left to Right) the sound is placed.

Adding volume changes

Using the Pen tool, you can add, move, and delete keyframes for

fading audio up or down.

Here’s how you do it, assuming we’re starting with a sound clip in the sequence:

1. Double click on the audio clip, it will appear in the viewer

2. Select the pen tool.

3. Click on four or ve points where you want to change the audio level. e round circles along the pink level

like are called control points.

4. Click and drag the control points up or down to raise or lower the level (see illustration).

5. Listen to the clip and adjust the control points as needed. To add additional control points, click on the line

with the pen tool. Note that the pen tool has multiple modes: you can select the + mode to add control points

and the - mode to delete control points.

A Brief Introduction to Editing with Final Cut Express (work-in-progress v.3c) Page 7 of 14

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Apple Final Cut Express HD Manuale Utente Pagina 7