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Insert clips in Final Cut Pro for Mac
An insert edit places the source clip so that all clips after the insertion point are moved later (or rippled) in the timeline to make room for the clip being added. No clips are removed from your project. An insert edit makes the project longer by the duration of the inserted clip.

You might use insert edits when you want to add a new shot in the beginning or the middle of your project. You can also use an insert edit to interrupt the action in an existing clip with the action in the newly inserted clip. The action in the original clip then resumes after the inserted clip.
Note: You can use three-point editing to make insert edits. See Intro to three-point editing in Final Cut Pro for Mac.
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