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Split editing
In split editing, a clips audio and video are separately trimmed
so that the
transition to one occurs before the transition to the other.
Note: Under Studio Plus, split editing may also be carried out
on the overlayvideo and audio
tracks, using analogous methods to those described here.
In an L-cut, the video precedes its sync audio; in a J -cut, the
audio comes first.
Tip: For faster, more precise trimming, you may find it helpful
to have the Clip
properties tool open when following the procedures in this
section. To open the
tool, just double-click one of the video clips before you
begin.
The L-cut
In an L-cut, the cut to new video comes before the cut in the
audio.
Imagine a videotaped lecture in which the video periodically
cuts away from the
speaker to show travel or nature scenes illustrating the lecture
topic.
Audio and video cut simultaneously.
Instead of cutting the audio and the video simultaneously, you
might decide to let the
speakers voice overlap into the following scene. This makes it
clear to the audience
that the new scene they are now watching illustrates whatever
explanation the
speaker has been providing.
Notice that the video and audio clip boundaries in the completed
cut form an L-
shape.
Audio cuts after video. The resulting L shape is outlined in
this illustration.
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There are many effective uses of this technique. It can be
considered whenever the
second clips video serves to illustrate the first clips
audio.
To perform an L-cut:
1. Adjust the Timeline so you can easily count off the number of
frames or seconds
you want to overlap.
2. Select the left-hand clip and trim its right edge to the
point where you want the
audio to end.
3. Lock the audio track. Now drag the right-hand edge of the
same clips video
leftward to the point where the following clips video should
start.
4. With the audio track still locked, drag the second clips
video to the left until it
meets the original clip.
If there isnt enough excess video at the start of the second
clip to make this trimpossible, you will first need to trim off a
sufficient amount from both its video an
audio then try again.
5. Unlock the audio track.
The video now cuts away to the second clip ahead of the audio.
Video has been
trimmed from the end of the first clip, and audio has been
trimmed from the start
of the second clip.
The J-cut
In the J -cut, the new audio cuts in before the video switches.
This can be effective
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when the second clips audio prepares the viewer for the material
in the scene.
Returning to the videotaped lecture example, lets say we are now
going to switch
back to the speaker at the end of the interpolated footage. If
we let the next part o
the lecture appear on the soundtrack a few moments before the
video shows us the
podium again, the change will be much less abrupt.
This time the clip boundaries outline the letter J :
Audio cuts before video. The resulting J shape is outlined in
this illustration.
To perform a J-cut:
1. Adjust the Timeline so you can easily count off the number of
frames or seconds
you want to overlap.
2. As before, trim back the right edge of the left-hand clip,
both video and audio, by
the overlap interval.
3. Lock the audio track. Now drag the right-hand edge of the
same clips video back
to the right by the overlap interval.
4. Unlock the audio track.
The audio now cuts away to the second clip ahead of the
video.
Note: The procedures described above for performing the L-cut
and the J -cut are
not the only possibilities. With the J -cut, for example,
another method would be to
trim the right-hand clip to the desired start point of the video
then, with the video
track locked, drag the audio portion leftwards to overlap the
audio of the left-hand
clip.
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