Apple iMovie HD Manuel d'utilisateur télécharger pdf (Page 18)

The preview controls

(from left) begin play

back of the preview,

loop playback, cancel

the transition, or add

it to the timeline.

When you select

a transition, a

preview appears in

the monitor.

If you’ve selected two

or more clips in the

timeline, you can

apply the transition to

all of the clips by

clicking Add.

When you create a transition,

title, or effect, iMovie HD must

create the video frames that

represent your efforts. This ren

dering process takes time; you

may notice iMovie HD slows

down a bit during rendering.

You can continue to work while

rendering takes place. You can

even play back your movie,

although you may notice

stuttering playback when iMovie

HD reaches areas it hasn’t ﬁn

ished rendering.

Although you can work during

rendering, you might want to

avoid adding multiple transitions

or titles in rapid-ﬁre succession,

as doing so can slow iMovie HD

to a crawl. To gauge how long

rendering will take, look at the

transitions, titles, or effects that

you’ve added: a little red

progress bar shows how far

along rendering is.

Some Background on Rendering

Visual transitions add a professional touch

to your project. Transitions also help tell a

story. For example, a cross-dissolve—one

clip fading out while another fades in—

can imply the passage of time. Imagine

slowly dissolving from a nighttime camp

ﬁre scene to a campsite scene shot the fol

lowing morning.

Similarly, iMovie HD’s Push transition,

where one clip pushes another out of the

frame, is a visual way of saying “mean

while...” Imagine using this transition

between a scene of an expectant mother in

the delivery room and a shot of her hus

band pacing in the waiting room, chain-

smoking nervously. (Okay, so this is an

old-fashioned maternity movie.)

iMovie HD’s Fade In, Fade Out, and

Cross Dissolve transitions are “desert-

island” transitions—the ones you’d want

when stranded on an island (perhaps while

editing an episode of Survivor). But unless

you are stranded on an island, don’t limit

yourself—experiment with other types of

transitions. To preview any transition,

select a clip in the timeline or clip viewer,

then click the transition’s name in the

Transitions pane.

Like effects, transitions are visual

spice. Season your video with them, but

don’t let them overpower the main course:

your subject.

Adding Transitions

Creating a Transition

To add a transition between two clips,

ﬁrst click iMovie HD’s Editing button,

and then click the Transitions button

to display the Transitions pane.

To add the transition,

drag it between two

clips in the timeline

or clip viewer.

Some transitions, such

as Push, allow you to

specify a direction (for

example, to push from

left to right or from top

to bottom).

To change the transi

tion’s duration, drag the

Speed slider or type a

value in the box.

Testing the Transition

To see the ﬁnished transition, select it

and press the spacebar.

If you aren’t happy with the transition,

you can delete it (press the Delete key)

or choose Undo.

Inserting a Clip at a

Transition

When you create a transition between

two clips, you establish a connection

between those clips.

If you need to insert a new clip between

those two clips, you must ﬁrst delete the

transition: select it and press Delete.

Now you can insert the new clip.

Updating a Transition

Change your mind about using a particu-

lar transition style? To change an existing

transition, ﬁrst select it in the clip viewer

or timeline viewer. Make the desired

changes, and click the Update button in

the Transitions pane.

Applying a Transition to

Multiple Clips

You can apply the same transition to

multiple clips in one step: select the clips

in the timeline, select a transition, then

click the Add button. You can also update

multiple transitions at once: select them

in the timeline (

1-click on them or use

the Edit menu’s Select Similar Clips com

mand), adjust transition settings, then

click Update.

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iMovie HD: Making Movies

Adding Transitions

iMovie HD: Making Movies

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Apple iMovie HD Manuel d'utilisateur Page 18

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