How to trim and cut a screen recording on Mac

What can QuickTime do to a screen recording?

A recording made with the Screenshot toolbar (Shift-Command-5) is, per Apple, saved as a .mov file whose name starts with “Screen Recording” and includes the date and time. Everything below works on that file. We read each Apple page on October 22, 2026 and did not run the steps on macOS Tahoe 26 or macOS 27, so menu wording on your Mac may differ slightly.

Apple does not list a keyboard shortcut for Trim or Split Clip on its QuickTime pages, so we do not print one. Your Edit menu shows whatever your version binds.

How do you trim the start and end of a screen recording?

The usual reason to trim is a tail: you click stop and the last seconds record you reaching for the mouse. One user on Apple Support Communities describes exactly that. There are three Apple routes, and for a simple end trim all three are faster than any larger editor.

1. 1QuickTime Player: open the file and choose Edit > Trim.
2. 2Drag the yellow handles in the trimming bar. Apple says the area outside the handles is the area to be trimmed.
3. 3Apple tip: click and hold a handle to see individual frames, then click Trim.

How do you cut out the middle of a screen recording?

QuickTime does this by splitting the movie into clips and removing the clip you do not want. Apple's split guide gives these steps:

1. 1Open the recording in QuickTime Player and choose View > Show Clips.
2. 2Move the playhead (the red vertical line) to where the unwanted part starts, then choose Edit > Split Clip.
3. 3Move the playhead to where the unwanted part ends and split again. Apple's tip: the Left and Right Arrow keys move the playhead in small steps, and Option plus an Arrow key jumps to the start or end of the clip.
4. 4Select the unwanted middle clip and delete it.
5. 5Click Done, then choose File > Save. If Save is dimmed, Apple says to click the red close button, enter the clip information, then click Save.

A gap in Apple's documentation: its split page says you can edit by “deleting clips” and to split, delete the parts you do not want and save, but it never names the delete command, and we did not test one. With the unwanted clip selected, look in the Edit menu for your version's command. If it is not there, any full editor can remove a middle section; see when a bigger editor is worth it. Apple also has a page on rearranging clips if you want to reorder what remains.

One practical limit: this is manual. For a ten-minute recording with a handful of cuts it is fine. For a long one with dozens of pauses, see the section on bigger editors.

Why won't QuickTime let me trim a video?

When Trim and Split Clip are greyed out, the cause is often the file. Apple documents no reason, so what follows is reported by Reddit users, not by Apple, and we did not reproduce it. In the r/MacOS thread on greyed-out QuickTime menus, one user said the video was in fragmented MP4 format and the fix was to right-click it and choose “Encode Selected Video Files”. Another suggested closing the file in QuickTime first, then using that Finder entry.

If the file came from Shift-Command-5 and Trim is still dimmed, try the Quick Actions route first, since Apple documents it and it does not depend on the QuickTime menus.

Can you crop a screen recording on a Mac?

“Crop” means three different things, and Apple answers them differently.

Apple's Markup page describes Markup as for PDF documents and images, and QuickTime Player has no crop control that Apple documents. So iMovie is the only Apple route for cropping the picture. Per Apple's iMovie crop page: select the clip in the timeline, click the Cropping button, click Crop to Fill, move and resize the frame, then click Apply. Apple says the frame is constrained to a 16:9 aspect ratio. The same page notes iMovie's Reset button clears the crop.

Because of that lock, a tall window crop always loses width. The cleaner fix is recording the right region: Apple says the toolbar's “Record a portion of the screen” tool lets you drag the frame or its edges to adjust the area. Cropping and scaling can soften text, which is covered in why a recording looks blurry after export. For how much headroom to leave when you record, see 4K vs 1080p screen recording. For file size, see how to compress video without losing quality.

How do you remove the audio from a screen recording?

QuickTime Player can do it. Apple's QuickTime guide says to open the movie and choose Edit > Remove Audio, which leaves a video-only file; then save it. To silence only part of the recording, use iMovie: its shortcut list gives Shift-Command-M to mute the audio in a clip and Option-Command-B to detach the audio from a clip, then export.

If you plan to replace the sound, see how to add a voiceover to a screen recording. If the sound is missing because the recording never captured it, that is a capture problem, covered in Mac screen recording has no audio.

When is a bigger editor worth it?

We make Rushilo, so weigh this section accordingly. For a short end trim, use QuickTime or the Finder Quick Action: they are faster, free and already on your Mac. Rushilo only earns a mention for one job, cutting dead time out of a long recording.

From our capabilities notes and the 1.3.1 release notes: Rushilo imports .mov files; its cut is a ripple cut across all tracks, so removing a section closes the gap in one step; and for recordings with speech, the transcript panel lets you select words and cut them, and Tighten pauses shortens gaps over a limit you pick (0.5, 1, 1.5 or 2 seconds). Pauses are found from word timestamps, not loudness, so a silent demo with no speech is not helped. It needs a transcript first, from a local model or your own key, and it does not edit for you: you drive it with your own Claude Code, Codex or key. The Mac recorder in 1.3.1 is macOS only. We read these notes and did not test the flow on your footage.

Rushilo does not crop for you in any way we have verified, and we do not claim it removes audio from an imported file. Use iMovie for those. For the pause-removal workflow itself, see removing silence and filler words. It is paid, from $19; Buy Rushilo has the plans.

What to check before you share the file

1. 1Keep the original. Duplicate the file in Finder, or choose “create a new file” when Quick Actions offers it, before any destructive edit.
2. 2Play the join where you cut. A cut mid-word or mid-click reads as a glitch.
3. 3Play the last few seconds, since a tail from reaching for the stop button is the usual leftover.
4. 4Check the sound at the start, middle and end if you muted or kept audio.

Patel, O. (2026, October 22). How to trim and cut a screen recording on Mac. Rushilo. https://rushilo.com/blog/trim-screen-recording-mac

About the author

Om Patel

Founder, Rushilo

Om Patel is the founder of Rushilo, a desktop video editor driven by the user's own AI, and of BigIdeasDB, a research platform that reads real complaints and reviews to help founders validate products. He writes Rushilo's research articles with the same method: primary sources, dated numbers and the words real users write.

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