User Manual

The rules of timeline rippling illustrated. All clips with In points to the left of Subclip B
(the clip being rippled) are left in place (area in blue), while all clips to the right of the edit
being rippled are moved by the duration of the ripple operation (in red)
This simple rule means that, if you’re in the habit of building sequences of clips from left to right,
long overlapping superimpositions such as titles, graphics, and music clips will stay in place
while you’re rippling various clips within a montage that you’re editing in relation to these
longer clips.
However, there’s one exception to this rule. It is often the case that split edits, where linked
audio and video are cut at different places, create a situation where the audio In point of a pair
of linked audio and video items precedes a video In point that you want to ripple. In other
words, the audio In point extends to the left of the video In point, which ordinarily would trigger
the rule that clips with edit points to the left of a rippled edit point won’t be moved, which
would throw the audio and video of this item out of sync. In this case, you probably want to
maintain sync, so all items that are linked to a clip being rippled always ripple along with it, even
if they do have In points that extend to the left of the edit point being rippled.
Using Auto Select Controls
to Control Trimming
The Auto Select buttons on each track in the Timeline control a host of different operations, but
while they’re deceptively powerful, they’re also among the most misunderstood controls of the
Timeline. When a track’s Auto Select control is on, clips on that track are automatically included
in three different types of operations:
 Operations that affect clips intersecting the position of the playhead
 Operations that affect clips intersecting a region defined by timeline In and Out points
 Operations that ripple clips to the right of an affected clip on the Timeline
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