Apple iMovie HD User Manual download pdf (Page 15)

Adjusting Volume Over Time

Here’s how to adjust a track’s volume level to accommodate

narration or dialog in another track.

Step 1.

Choose Show Clip Volume Levels from

the View menu.

When volume

levels are visible,

iMovie HD dis

plays a volume

level bar on each

track.

Step 2.

Click on the audio track’s volume level bar at

the point where you want to adjust the volume.

A volume marker appears.

Step 3.

To lower the volume, drag the marker down.

To increase the volume, drag the marker up.

To move the point at which the volume changes,

drag the marker left or right.

Here, the volume of a music track has been

tweaked so that the music gets softer during

a narration passage.

To delete a marker, select it and press the

Delete key.

Step 4.

When you’ve ﬁnished tweaking volume levels,

choose Show Clip Volume Levels from the View

menu again so that the command is unchecked.

Adjusting the volume of an audio track

is a common task. And when you combine

audio in any way—mixing music, sound

effects, dialog, and background sounds—

you almost always need to adjust the rela

tive levels of each sound to create a

pleasing mix.

iMovie HD provides several ways to

work with sound levels. You can reduce the

volume of an entire sound clip. You might

do this if you’re mixing music with the

sound of the surf, and don’t want the waves

to drown out the music.

You can also vary a track’s volume level

over time. When combining music and

narration, you might want the music to start

at full volume, fade when the narrator talks,

then return to full volume when she stops.

The timeline viewer provides several

controls for adjusting volume levels. Many

of them are easier to use when you have

iMovie HD display audio track waveforms

To display waveforms, choose Show Audio

Waveforms from the View menu.

A waveform looks a bit like the pen

manship of an earthquake seismograph.

Back-and-forth lines indicate the intensity

of the shaking—in this case, of the sound

wave. Being able to see your sound instead

of just a horizontal colored bar is a big help

when trimming audio tracks, adjusting vol

ume, and creating audio fades.

Adjusting the

Volume of a Clip

To adjust the volume of an entire audio

clip, select the clip and then drag the

volume slider located below the timeline.

You can also type a

value in the text box.

Fading Out or Fading In

Creating an audio fade involves working

with volume markers in the timeline.

Step 1.

Choose Show Clip Volume Levels from the View menu.

Step 2.

Click the horizontal line in the audio

track to create and adjust volume markers.

Working with Audio Tracks

To lower the volume,

drag the marker down.

To move the marker

earlier or later in time,

drag it left or right.

To adjust the duration

of the fade, drag the

beginning point of the

marker left or right.

The completed fade.

Conversely, to create

a fade-in, drag the

beginning point of a

volume marker all the

way down, then drag

the end point up.

Can’t trim clips? Turn off levels. If iMovie HD

isn’t letting you use direct trimming to adjust the

in- and out-points of clips, it’s probably because

you’re viewing clip volume levels—direct trimming

isn’t available when levels are displayed. Be sure

that the Show Clip Volume Levels command in the

View menu is unchecked.

spread M14

iMovie HD: Making Movies

Working with Audio Tracks

iMovie HD: Making Movies

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Apple iMovie HD User Manual Page 15

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