Apple iMovie HD Manuel d'utilisateur télécharger pdf (Page 30)

Get links to iMovie HD add-ons.

www.macilife.com/imovie

reason is because the video frame size is

smaller—352 by 240 pixels, instead of

DVD’s 720 by 480. Another reason is

that the video itself is compressed more

heavily—about 90:1, compared to

roughly 30:1 for MPEG-2. But on the

plus side, a Video CD can shoehorn

about an hour of video onto a CD-R disc.

A variation of the Video CD format is

called Super Video CD, or SuperVCD. On

a SuperVCD, video is stored in MPEG-2

format, yielding better quality than a Video

CD. The SuperVCD format also allows for

many DVD-like features, such as alternate

language tracks. Its video quality still

falls short of a DVD’s, however.

Video CD and SuperVCD are second-best

alternatives to DVDs, but if you don’t have a

DVD burner, any alternative is better than

none. For background on the Video CD and

SuperVCD formats, see www.vcdhelp.com.

Adding On to iMovie HD

Several companies sell inexpensive add-

ons that expand iMovie HD’s repertoire of

effects, titles, and transitions. Companies

offering iMovie HD add-ons include Virtix,

GeeThree, and Stupendous Software. Each

of these companies also offers free iMovie

HD effect plug-ins. For links to more plug-

ins, see www.macilife.com/imovie.

The best way to see how your

video will look on TV is to watch

it on TV while editing it. iMovie

HD makes it easy. First, connect

your DV camcorder to the Mac

with a FireWire cable as usual.

(Note: This works with the DV

format only, not HD.)

Next, connect your camcorder’s

video output to the video input

of a TV set. If your TV and

camcorder each have S-Video

connections, you should use

them for the best video quality.

If your TV lacks S-Video but has

a composite video input (an RCA

jack), use it. If your TV lacks

video inputs, add an RF modula

tor between the camcorder and

the TV set. You can buy the

modulator at Radio Shack for

about $30.

Once you’ve made the connec

tions, choose Preferences from

the iMovie HD menu, click

Playback, and then check the

Play DV Project Video Through

to DV Camera box.

When this option is selected, your

project’s audio will not play back

through your Mac’s speakers. You

can rely on your camcorder’s tiny,

built-in speaker for sound play

back, but you might want to

connect your camcorder’s audio

outputs to your TV’s audio inputs,

if it provides them; to a stereo

system; or to a pair of external

ampliﬁed speakers.

Adjusting playback quality.

While you’re setting playback

preferences, examine the options

iMovie HD provides for optimizing

playback. If your Mac is stuttering

on a complex project, consider

downshifting to the Standard

quality setting. Have a fast Mac?

Aim high and choose Highest.

Editing Like the Pros: Making the TV Connection

Archiving a Project

If you’ve created a fairly short project,

you can archive it on a CD or (more

likely) DVD. Choose Burn Project to Disc

from the File menu, then insert a blank

disc when iMovie HD tells you to. iMovie

HD burns your project ﬁle to the disc.

When it’s done, you can free up disk

space on your hard drive by deleting the

project ﬁle.

Unfortunately, if the project is larger than

will ﬁt on a single disc, you can’t archive

it using Burn Project to Disc. Instead,

back up the project by copying it to a

different hard drive.

Accessing Your Project’s

Media

In older iMovie versions, a movie project

was stored in a folder, and its media

assets, reference movies, and shared

movies were stored in a folder within it.

iMovie HD works differently. Its project

ﬁles are packages, a special kind of

Mac OS X folder. That’s good in that it

makes it easy to back up a project (just

drag its icon to another hard drive) and

makes it difﬁcult for iMovie HD newcom

ers to damage a project by removing or

altering ﬁles they shouldn’t.

But as I’ve mentioned on previous pages,

sometimes you need to get to the innards

of a project. You still can: at the Finder,

Control-click on a project icon and

choose Show Package Contents from the

Shortcut menu. The window that appears

contains your project’s timeline ﬁle,

source media, and shared movies (ones

you created using the Share command).

In the Cache folder is a movie named

Timeline Movie.mov. This is your project’s

reference movie—it’s a QuickTime movie

containing pointers to the media used in

your project. You can drag this reference

movie into a compression utility such as

Kinoma Producer or Sorenson Squeeze.

iSight as Microphone

If you have an iSight camera, you can

use it as a microphone to record narra

tion. For the best sound quality, hold the

iSight several inches from your mouth

and talk to the top of the camera—that’s

where the microphone is. Put iMovie HD

into camera mode as described on page

263, then click Record With iSight.

Add the clip you recorded to the timeline,

then Control-click on it and choose

Extract Audio. Delete the video portion

of the clip, then move the audio to the

desired location on the timeline.

Exporting Your

Movie’s Sound

There may be occasions when you want

to export part or all of the audio track of

your project. Maybe you want to bring it

into an audio-editing program, such as

SoundStudio or Amadeus, for ﬁne-tuning.

Or maybe you recorded a music recital

and you’d like to bring the performance

into iTunes or GarageBand.

To export your project’s soundtrack,

choose QuickTime from the Share menu,

choose Expert Settings, and click Share.

In the Save dialog box that appears,

choose Sound to AIFF from the Export

pop-up menu. Click Options, then choose

the desired audio settings.

If you’ll be bringing your audio back

into iMovie HD, use the default options.

If you’ll be importing the audio into

iTunes or GarageBand, choose 44.100

from the Sample pop-up menu.

Burning Movies to CD

and Video CD

If your Mac has a CD burner, you might

want to burn your exported movie to a CD

so you can share it with others. In the

Share dialog box, click QuickTime, then

choose the CD-ROM option. Next, insert

a blank CD into your Mac’s optical drive

and copy the movie to the CD. The result

ing CD will play on any Mac or Windows

computer that has QuickTime installed.

If you have Roxio’s Toast software, you

can also create a Video CD. This video

format is very popular in Asia, and some

what obscure everywhere else. But most

stand-alone DVD players can play Video

CDs, as can all current personal comput

ers. (To play Video CDs on a Mac, use

Mireth Technology’s MacVCD X software,

available at www.mireth.com. And if

you don’t have Toast Titanium, you can

also make Video CDs using Mireth

Technology’s iVCD.)

Video on a Video CD is compressed in

MPEG-1 format. The image quality is a

far cry from that of the MPEG-2 format

used on DVDs; Video CD image quality is

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Apple iMovie HD Manuel d'utilisateur Page 30

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