Apple iMovie HD Manuel d'utilisateur télécharger pdf (Page 32)

For animators, patience isn’t a virtue—

it’s a must. Move objects slowly and

gradually—just a fraction of an inch

between frames. And whatever you do,

don’t bump your tripod between frames.

To save time, try shooting two frames,

instead of just one, between each move.

Animators call this animating on twos

and it takes half the time but usually

delivers ﬁne results.

Kids in motion. For a variation on the

previous theme, animate some kids:

point the camera at the backyard, and

have the kids take a small step between

each frame. In the ﬁnal movie, they’ll

appear to move without walking.

Time for time-lapse. Making time-

lapse movies is much easier, since your

subject does the moving on its own. All

you have to do is set up your scene and

start capturing.

In iMovie HD, choose Time Lapse from

the camera icon’s popup menu, choose

an interval, and click OK. Then click

Import to start recording (see page 226).

What to shoot? A snowstorm, a rose,

the clouds, a burning candle, a glass

ﬁlled with ice, the shadows cast by a

fence or set of window blinds. Anything

that moves or changes shape slowly in

the real world is a great candidate for

time-lapse photography.

Sunsets and sunrises make spectacular

time-lapse movies. To avoid damaging

your camera, don’t zoom in on the sun or

point the camera directly at a midday sun.

How frequently should you capture a

frame? That depends on how quickly your

subject is changing and on how long you

want your ﬁnal clip to be. For a time-lapse

of a rose blooming, I used a one-minute

interval, which turned an hour of real time

into one second of video. For some cloud

scenes, I used a 15-second interval.

To calculate the ideal frame interval,

begin by determining the duration of the

real event, the desired duration of your

ﬁnal clip, and the number of frames

per second you want the ﬁnal clip to

have (20 frames per second is a good

starting point). Say a rose bud takes

four hours to blossom, and you want

the time-lapse clip to play for nine sec

onds. Multiplying nine seconds by 20

frames per second yields 180 frames.

Finally, divide the duration of the real

event by the number of frames you need.

In this example, 240 minutes divided by

180 frames equals about 1.3 minutes—

or about 80 seconds between frames.

Post-Production

After creating an animation, enhance it.

Make a montage. When researching

animation and time-lapse techniques, I

shot a variety of time-lapse scenes,

then edited them into a montage.

After shooting the clips and importing

them into iMovie HD, I added a music

track. I’ve always loved Koyaanisqatsi, a

ﬁlm comprised largely of beautiful time-

lapse photography; its Philip Glass music

score is a perfect complement to time-

lapse scenes. A quick search of the

iTunes Music Store led to the soundtrack

album, and 99 cents later, I had my

soundtrack. (Remember, you can’t use

copyrighted work in commercial projects.)

Next, I imported my time-lapse movies

into iMovie HD and added them to the

timeline, cropping each clip so that the

scenes would change roughly in tempo

with the music. Then I added a cross-

dissolve transition between the scenes.

Run it backwards. To put a different

spin on a time-lapse clip, reverse it: see

a rose close itself or a glass of water turn

into a glass of ice. After adding the clip

to iMovie HD’s timeline, select it and use

the Fast/Slow/Reverse effect.

Our minds are mesmerized by animation,

whether it’s a time-lapse movie of a brew

ing storm, some claymation that brings

Play-Doh to life, or the hand-drawn art

istry of a classic cartoon.

With some inexpensive software and a

video camera, you can put your world into

motion. The process is simple, if time con

suming. For animation, shoot one frame of

video at a time, moving objects or chang

ing a drawing between each frame. Time-

lapse movies are easier: point your camera

at an interesting scene, then go to the mall

while your software snaps a frame at what

ever interval you like. When you play your

ﬁnal movie, clouds will billow, and ﬂowers

will bloom—you get the idea.

A time-lapse or animation project can

be a fun school or family endeavor. Here’s

a look at the tools you’ll need, along with

some tips and project ideas.

Creating Time-lapse Movies and Animation

The Tools

To put your world in motion, you need a camera, a tri-

pod, and some software. To get the best video quality,

connect a miniDV camcorder to your Mac’s FireWire

jack. If you don’t have a camcorder, an inexpensive

Web cam, such as Apple’s iSight, will also work.

iMovie HD 6 can create time-lapse movies, as can

several other programs. Boinx Software’s iStopMotion

was designed speciﬁcally for the task. It works with

DV cameras as well as Web cams.

You can also use Web-cam software, such as

Evological’s EvoCam or Econ Technologies’

ImageCaster. For links to these and other animation

tools, see www.macilife.com/imovie.

The Techniques

Prepare your gear. Mount your camera on a tripod and

plug the camera’s power adapter into a wall outlet—

batteries won’t last long enough.

Many DV camcorders shut themselves off after a few

minutes when you aren’t recording to tape. You can usu

ally bypass this auto-shutoff by taking the tape out of the

camera. If your camera still insists on slumbering,

try leaving its tape door open.

Connect the camcorder to your Mac, launch your soft

ware, and you’re ready to go. Here are some possible

destinations.

Toys in motion. For an easy stop-motion project, put

some toys in motion: the Matchbox Car 500. For your

animation stage, choose an area where the lighting is

going to be fairly consistent over several hours. If you’re

relying on light from windows, try to shoot on a cloudy

day. Dramatic variations in lighting from one frame to

the next will ruin the illusion of motion.

spread M29

iMovie HD: Making Movies

Creating Time-lapse Movies and Animation

iMovie HD: Making Movies

280

281

1 2 ... 27 28 29 30 31 32

Commentaires sur ces manuels

Pas de commentaire

Apple iMovie HD Manuel d'utilisateur Page 32

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Apple iMovie HD