How to Edit a Screen Recording on Mac: Trim, Zoom, Blur

To edit a screen recording on Mac for free, open it in QuickTime Player and choose Edit ▸ Trim (⌘T, Command-T). Drag the yellow handles to the new start and end, click Trim, then save a copy with File ▸ Export As.

Some edits need more than a trim. You might want to zoom into the button you clicked, make the cursor bigger, blur an email address or put a background behind the video. QuickTime can't do those, and a general video editor makes them slow. This guide covers the free tools first. Then it shows how we handle those edits in Screen Bolt, the Mac screen recorder and editor we make.

Trim a screen recording in QuickTime Player

QuickTime Player is built into macOS. It's enough when you only need to cut the dead seconds at the start and end.

1. Right-click the recording in Finder and choose Open With ▸ QuickTime Player.
2. Choose Edit ▸ Trim (⌘T).
3. Drag the left and right yellow handles to where the video should start and end.
4. Click Trim.
5. Choose File ▸ Export As and pick a resolution. This saves a new file and leaves the original as it was.

If you recorded with the Screenshot toolbar (⇧⌘5, Shift-Command-5), you can trim before the file is saved. Click the thumbnail that appears in the corner of the screen, then use the trim button in the window that opens.

Cut a mistake out of the middle

1. Move the playhead to where the mistake starts and choose Edit ▸ Split Clip (⌘Y).
2. Move to where the mistake ends and split again.
3. Click the clip in the middle and press Delete.
4. Export with File ▸ Export As.

What QuickTime can't do

QuickTime can trim, split, rotate, flip and join clips. It can't add text, zooms, blur, a background or cursor changes. If your recording needs any of those, you need an editor.

For recording tips, see our guide to QuickTime screen recording. For more trimming options, see how to trim a screen recording on Mac.

Edit a screen recording in iMovie

iMovie is Apple's free video editor. You import the recording, drag it onto the timeline, then trim and arrange clips. It's a sensible step up when you're cutting a longer video together. It can export videos set up for YouTube and other sites, and if you outgrow it, you can move the project into Final Cut Pro.

Check two things first (as of November 2026):

• The US Mac App Store listing requires macOS 26.6 or later. Other storefronts have shown different requirements, so check the listing on your own Mac.
• It's a 3.6 GB download.

The tedious part isn't specific to iMovie. A screen recording from QuickTime or the Screenshot toolbar is just pixels. The file has no record of where your cursor was or when you clicked. A general editor can't know what to zoom into. It can't make the cursor larger, because the cursor is baked into the image. And it can't find an email address on screen for you. You have to place and aim each of those edits by hand, if the editor has the tool at all.

What screen recordings need that general editors make slow

Screen recordings are often watched small: in a chat embed, on a docs page or on a phone. These edits keep them readable:

• Zoom on what you clicked. Menu items and small buttons are hard to read at full-screen size. Zooming in when you click fixes that.
• A visible cursor. Viewers follow the pointer. A larger, smoother cursor with a click effect is easier to track.
• Blur. Email addresses, customer names and API keys end up in recordings easily.
• Background and padding. Padding and rounded corners on a wallpaper make a recording look finished. They also let you change the aspect ratio for vertical or square posts.

A recorder that tracks your cursor and clicks while it records can handle the first two automatically. That's the main reason to use a dedicated screen recording editor instead of a general one.

Edit a screen recording in Screen Bolt

Screen Bolt records your screen and saves the cursor path and every click. When you stop recording, the editor opens with auto zooms already in place, since they're on by default. It runs on macOS 14 (Sonoma) or later. Recordings are processed locally on your Mac.

One limit to know first: auto zoom, cursor smoothing and click effects only work on recordings made in Screen Bolt. You can open a QuickTime file with File ▸ Create project from video... and trim it, cut it, add text, blur it and give it a background. But the file has no cursor data, so you get no auto zooms and no cursor effects. It also isn't saved as a project, so your edits are lost when you close it. Export before you close the window.

Trim, split and cut

1. Trim the ends: drag the left or right handle of the clip on the timeline.
2. Split: move the playhead and press S, or click the scissors (Split at playhead (S)). You can then move, trim or delete each half.
3. Cut a section from the middle: press I at the start of the section and O at the end. Then press Delete or click Cut I-O. You can also drag-select a range on the timeline and click the scissors (Delete selected region).
4. Reorder: drag a clip along the clip track.
5. Add another video: drop a video file onto the clip track. It goes in before or after the clip under the pointer.

Undo is ⌘Z and keeps 50 steps. To find a spot quickly, pause and hover over the clip track to skim. Press M to drop a marker, then use [ and ] to jump between markers. Markers only help you find your place and don't appear in the export.

Speed up slow parts

The speed menu (it shows "1x") sets the speed for the whole video, from 0.25x to 4x, and that speed is exported. The J and L keys also change this saved speed by 0.25 each time you press them, and K pauses. Keep that in mind if you use J/K/L just to scrub around.

You can also mark an In/Out range and apply a slow-motion or fast-forward ramp from the Speed menu. In version 1.11.5, ramps play in the preview but are not included in the export. To shorten a slow stretch such as a loading screen, cut it out instead. More options are in how to speed up a screen recording.

Fix the zooms

When Create zooms automatically is on (the default), Screen Bolt turns your clicks into zoom regions. Clicks within 1 second and 200 px of each other merge into one zoom. Each zoom holds for at least 1.8 seconds, and the view follows your cursor while zoomed in. Typing doesn't create zooms. Only clicks do.

To adjust zooms on the zoom track or in the Zoom panel (⌘5):

• Drag a region to move it, or drag its edges to change its length.
• Double-click a region to cycle its zoom level, or right-click it and choose Change Zoom Level (1.5x to 6.0x).
• Right-click and choose Transition Speed. The options run from Snap (none) to Cinematic (1.0s).
• Press ⌘K (Command-K) to add a zoom at the playhead. It centers on where the cursor was at that moment.
• Select a region and press Delete, or right-click it and choose Delete This Region.

Watch out for two things. Turning off Auto Zoom on Click in the Zoom panel disables every zoom, including the ones you added by hand. And you can't move a zoom's focus point, because it always centers on the cursor position. If a zoom lands in the wrong place, delete it. Then add one with ⌘K at a moment when the cursor was where you want the focus. More in how to zoom in on a screen recording.

Clean up the cursor

Open the Cursor panel (⌘6):

Turning Show Cursor off hides the cursor in the preview only. The export still draws it.

Blur private information

Press B or click Add Blur Region in the Effects panel to add a 5-second blur at the playhead. Choose a Style (Gaussian, Pixelate or Solid Color) and set Blur Intensity (5 to 50). Place it with the Region fields (X, Y, W, H) and set Duration (up to 60 seconds).

For email addresses, use Auto-Detect Sensitive Text under Effects ▸ Blur / Privacy. It scans the recording on your Mac and blurs every email address it finds. It can also catch phone numbers if you turn on Also detect phone numbers, plus any custom keywords you enter. The blurs follow the text through zooms and scrolling. Check each result on the Blur track before you export.

Run the scan after you've finished cutting, reordering and changing speed. Detected blurs aren't re-timed when you make those changes afterward.

Add a background

Pick a background in the Background panel (⌘2):

• Wallpaper: 23 built-in options, or From your Mac for your current desktop picture and Apple's wallpapers
• Gradient
• Color
• Image

In the Screen panel (⌘1), set Padding (default 5%), Corner Radius and the Aspect Ratio: Original, 16:9, 4:3, 21:9, 1:1, 9:16, 3:4 or 4:5.

In version 1.11.5, some settings only show in the preview:

• Custom gradient colors export as the selected wallpaper's gradient.
• A solid color exports as a dark gradient.
• Background blur, screen shadow, inset and device frames don't export.

Wallpapers and your own images export as shown. With padding at 0%, the export has no background. See how to add a background to a screen recording.

Add text, arrows and your webcam

• Text: press T or click Add Text Overlay to add a 3-second "Title" at the playhead. Set Font Size (12 to 120 pt), Weight, Color, Position and Duration, or drag and resize the text in the preview. In exports, every Animate In style is rendered as a fade. More in how to add text to a screen recording.
• Arrows and shapes: Add Annotation offers Arrow, Rectangle, Circle, Highlight, Line and Callout. Each one starts at 3 seconds. You can change its Color, Line Width, Position and Duration.
• Spotlight: Add Focus Region in the Effects panel dims everything outside a rectangle for 5 seconds. Use the button, because the F shortcut doesn't work in the current version.
• Webcam: the Webcam panel (⌘3) styles camera footage that Screen Bolt recorded along with your screen, so turn the camera on before you record. You can set the Position (one of the four corners), Aspect, Size (8% to 40%), Roundness and Mirror. To have the camera fill the frame for a stretch, mark In/Out and click Add from Marked Range under Fullscreen Moments. A separate video dropped onto an overlay track shows in the preview but isn't exported.

Export the edited video

1. Click Export in the editor toolbar.
2. Pick a Format: MP4 (H.264, plays everywhere), MOV (HEVC, smaller files) or GIF (Pro only).
3. Pick a Quality: Original, 4K, 1080p or 720p. Presets larger than your recording are disabled.
4. Check the file size in the summary line. The app labels it an estimate (±30%).
5. Confirm the Save to folder (Desktop by default) and click Export (Return).

You set the frame rate (30 or 60 FPS, default 60) and Compression (default Social Media) in Settings ▸ Quick export. The frame rate setting also controls the recording frame rate. When the export finishes, Finder shows the file.

Don't use the toolbar Share button for the finished video. It sends the raw, unedited recording.mov. Export first, then share the exported file.

The free version includes every editing feature in this guide. Its exports have a "Made with Screen Bolt" watermark, go up to 720p, can be at most 3 minutes long and can't be GIFs. A $79 one-time license (as of November 2026) removes those limits: compare Free and Pro. To choose a format, see MP4 vs MOV and the export help page.

Other full editors: ScreenFlow and Camtasia

ScreenFlow (Telestream) is a Mac-only recorder with a multi-track timeline editor and callouts. It can record the screen, a camera, a mic and an iPhone at the same time. As of November 2026, reviews describe it as a one-time purchase with paid major upgrades, but one listing shows a yearly price, so check Telestream's site. Its trial has no time limit, and trial exports carry a watermark.

Camtasia (TechSmith) runs on Windows and Mac. Third-party listings say it includes AI blur and redaction and background noise removal. As of November 2026, reviews say it's subscription-only and that every plan includes Snagit. TechSmith says your media has to be on local drives, not iCloud, Dropbox or OneDrive, while you record or edit. It suits teams that work on both Windows and Mac.

Which method to use

If you only need to remove the first and last few seconds, QuickTime is enough. If you record often and want zooms and blur without placing each one by hand, record in Screen Bolt from the start.

If it doesn't work

• No auto zooms in Screen Bolt. The video probably came from another recorder, so it has no click data. Or Create zooms automatically was off when you recorded. Add zooms with ⌘K. If no zooms show at all, check that Auto Zoom on Click is on in the Zoom panel.
• "Recording Too Long for Free Export" after trimming. The free 3-minute cap is checked against the full recording length, not the trimmed result. Record shorter takes, or upgrade.
• The export looks different from the preview. In 1.11.5 these don't export: device frames, shadow, inset, background blur, custom gradient and solid colors, speed ramps, video overlays, image overlay opacity, text animations other than fade, and Show Cursor turned off. Switch to a wallpaper or image background, and use cuts instead of ramps.
• Edits disappeared after reopening. A plain video opened with Create project from video..., or a movie file opened with Open project..., isn't saved as a project. Export before closing. Recordings made in Screen Bolt autosave every 30 seconds.
• Blurs are in the wrong place after cutting. Auto-detected blurs aren't re-timed after cuts, reordering or speed changes. Delete them on the Blur track and run the scan again.
• The shared video is unedited. The Share button sends the raw recording. Share the exported file from Finder instead.

FAQ

Can I edit a screen recording on Mac for free? Yes. QuickTime Player and the Screenshot toolbar preview can trim, and iMovie is free for fuller cutting. Screen Bolt's free version has every editing feature, but its exports carry a watermark and are limited to 720p and 3 minutes.

Does editing change my original recording? QuickTime's Export As writes a new file. In Screen Bolt, the original recording.mov stays in the project folder (~/Screen Bolt Projects by default), and your edits are saved separately in the project. Each export is a new file.

Where does Screen Bolt save the edited video? In the Save to folder you choose in the Export sheet, which is the Desktop by default. Screen Bolt remembers your choice. The toolbar's Open Export Folder button opens the projects folder, not the export folder.