Grass Valley EDIUS Pro v.7.4 Reference Manual - Manual (Page 253)

Chapter 6 Editing Timelines — Trimming Clips
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Example:
When trimming the Out point side of a video clip with audio (video part)
Slide Trim
Shift the start and end points of the neighboring clips forward and backward. The total length of the previous and subsequent clips remains
unchanged.
2
f You cannot perform trimming if there is no margin between the trimming clip and the adjacent clips. When trimming clips with margins,
trimming can be performed by the length of the margin of the clip.
Slip Trim
You can change the area of the clip to use, without changing the length or position of the clip. The length or position of the neighboring clips
remain unchanged.
2
f You cannot perform trimming if the trimming clip has no margin. When trimming clips with margins, trimming can be performed by the
length of the margin of the clip.