Apple Final Cut Express HD - Manual (Page 752)

752 Part IX Effects
How Changing Speed Affects a Clip’s Duration
A change in a clip’s speed can affect the duration of the clip. If you choose 50 percent
speed, your clip is twice the duration; if you change speed to 200 percent, the clip
becomes half as long. For example, if you set a 10-second clip to play back at
50 percent, Final Cut Express HD duplicates frames in the clip so that the clip becomes
20 seconds long and plays back more slowly. If you increase the clip’s speed to
200 percent, Final Cut Express HD skips frames and makes the clip 5 seconds long, and
it plays back considerably faster.
Note: Speed settings you apply are not applied to that clip’s source media on disk, and
can be changed at any time.
Performing a Fit to Fill Edit
A fit to fill edit changes the speed of a clip in the Viewer so that its duration matches
the duration between the sequence In and Out points. Because a fit to fill edit changes
the speed of the edited clip, you may have to render it before it will play back. Also, any
audio items associated with this clip will change pitch, moving either higher or lower.
Fit to fill is the only edit type in Final Cut Express HD that requires four edit points,
instead of three. You need to set In and Out points for your clip in the Viewer, as well as
In and Out points in the Canvas or Timeline, for the destination in your edited
sequence. For more information, see “
Three-Point Editing ” on page 329.
10-second clip Same clip with speed
changed to 50 percent
(now 20 seconds long)