Split View in Compositor Using the Drag Handle with Trim
The Trim Feature using the drag handle provides some good ways to
view your video while editing. The playback position in the
compositor is updated live and the view in the compositor can be
split so that in the left half of the compositor you can see the
last frame of the left clip and in the right half the first frame of
the right clip. Dragging edits can not be extended past the
beginning or the end.
First familiarize yourself with button operation; check your setup
by executing the following step. In the Settings
→ Preferences
→ Interface tab, Editing
section, clicking on the edit boundaries can be set for LMB (Button 1), MMB (Button 2), RMB (Button 3) as one of the following:
Ripple; Roll; Slip; Slide;
Edge or No effect
Now to use this feature, create a track with edits that have trims
on the left and/or the right. The edit boundary can be modified
using drag handles at the boundary between the edits
(figure 6.6).
Figure 6.6:
Split compositor screen showing the result of the Trim feature
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- Left Mouse Button (LMB) usage:
- If you grab the edit
handle from the right side, you will see a left arrow and dragging
the boundary will modify the right edit playback starting time. If
you grab the edit handle from the left side, you will see a right
arrow and dragging the boundary will modify the left edit playback
ending time. In both cases, the composer will show the edit endpoint
of the changed edit.
- Shift LMB usage:
- The effect on the edits is the same as
described above, but the composer will show a split screen of the
left and right edits as they appear at the drag handle
boundary. Dragging will only change one of the two images, since
only one edit is being changed.
- Middle Mouse Button (MMB) usage:
- Both the left and the
right edit ending/starting times are updated. The image shown in
the compositor will be drawn from the side of the drag grab, that is
the left if it is grabbed from the left, and the right if it is
grabbed from the right.
- Shift MMB usage:
- The effect on the edits is the same as
described above, but the composer will show a split screen of the
left and right edits as they appear at the drag handle boundary.
Dragging will change both of the two images, since both edits are
being changed.
- Right Mouse Button (RMB) usage:
- The start/end point of
the current edit is moved, but the edit length is unchanged only one
image changes since only one edit endpoint is view is updated.
- Shift RMB usage:
- The effect on the edits is the same as
described above, but the composer will show a split screen of the
left and right edits as they appear at the drag handle boundary.
Dragging will only change one of the two images, since only one edit
is being changed.
The CINELERRA-GG Community, 2021
https://www.cinelerra-gg.org
