How to Crop a Video on Mac: 5 Methods That Actually Work (2026)
How to Crop a Video on Mac: The Complete Guide
If you've ever needed to remove a distracting edge, turn a landscape clip into a square for Instagram, or cut out a watermark bar, you've run into the question of how to crop a video on Mac. It sounds simple, but macOS handles cropping in surprisingly inconsistent ways across its built-in apps — and the most obvious tool, QuickTime Player, actually can't do it at all.
This guide walks through five real methods to crop a video on Mac, from the free built-in apps to professional software and the command line. We'll be honest about what each tool can and can't do, clarify the confusing difference between cropping, trimming, and resizing, and finish with how to keep your cropped files small.
By the end, you'll know exactly which method fits your situation — whether you're editing one clip in a hurry or batch-processing a folder of footage.
Crop vs Trim vs Resize: Clearing Up the Confusion
Before any of the methods make sense, it's worth defining the three operations people mix up constantly. They sound related, but they change completely different things.
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Crop removes pixels from the edges of the frame. You're cutting away part of the picture — the top, bottom, or sides — which changes what's visible and usually changes the aspect ratio (for example, from 16:9 widescreen to 1:1 square). The remaining content stays at its original resolution; you've just kept a smaller rectangle of it.
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Trim cuts time, not space. Trimming a video means shortening it — removing the first ten seconds, or lopping off a shaky ending. The frame itself is untouched. This is what QuickTime Player does, and it's the single biggest source of confusion when people ask how to crop a video on Mac.
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Resize (also called scaling) keeps the entire frame but changes its pixel dimensions. A 4K clip resized to 1080p still shows everything — it's just smaller and lighter. Nothing is cut away.
Here's the practical takeaway: if you want to remove part of the picture, you need to crop. If you want to make the clip shorter, you trim. If you want smaller dimensions without losing any content, you resize. Many "how to crop" searches are really resize or trim questions in disguise, so it's worth being clear about your goal first. If your actual goal is fitting a clip to a platform's frame, our guide on resize a video for Instagram covers the aspect-ratio side of this in more depth.
Method 1: QuickTime Player (Trims, But Cannot Crop the Frame)
Let's address the elephant in the room first, because it's the app most Mac users reach for.
QuickTime Player cannot crop a video. There is no crop tool in QuickTime — no handles to drag, no aspect-ratio selector, no way to remove the edges of the frame. This surprises a lot of people, since QuickTime is Apple's default media app and handles almost everything else.
What QuickTime can do is trim. Open your video, choose Edit > Trim (or press Command-T), and you'll get a timeline with yellow handles at each end. Drag them inward to keep only the middle portion of the clip, then click Trim. That's cutting time, not cropping the frame.
QuickTime also handles a few other light edits — rotating a clip 90 degrees (Edit > Rotate Left/Right), flipping it, and splitting clips. But if your goal is to remove pixels from the edges or change the aspect ratio, QuickTime is the wrong tool. Move on to one of the methods below.
The honest summary: reach for QuickTime when you want to shorten or rotate a clip in seconds. For anything involving the frame itself, you'll need iMovie, Photos, Final Cut Pro, or FFmpeg.
Method 2: The Photos App (The Easiest Free Crop)
This is the hidden gem most people overlook. The Photos app that ships with macOS can crop video directly, with a genuinely simple interface — and it's completely free.
- Open the Photos app and import your video (drag it into the library if it isn't already there).
- Double-click the video to open it, then click Edit in the top-right.
- Click the Crop tool in the toolbar.
- Drag the corner handles to define the region you want to keep. You can also pick a fixed aspect ratio (Square, 16:9, and so on) from the aspect menu, or let it stay freeform.
- Click Done to apply, then export the cropped video via File > Export.
The Photos app applies the crop non-destructively, so you can always revert to the original. The main limitation is control — you're dragging handles by eye rather than typing exact pixel coordinates, and export options are limited. But for a quick, visual crop with zero learning curve, this is the fastest free route on Mac.
Method 3: iMovie (Free, With Crop to Fill)
iMovie is Apple's free consumer video editor, and it has a dedicated cropping feature called Crop to Fill. It's a step up from Photos when you want your crop to sit inside a proper editing timeline.
- Open iMovie and create a new project, then drag your video into the timeline.
- Select the clip in the timeline, then click the Cropping button above the viewer (the icon looks like a dashed rectangle).
- Choose Crop to Fill. A frame appears over your video.
- Drag and resize that frame to select the area you want to keep. iMovie zooms the selected region to fill the output frame.
- Click the blue checkmark to apply, then share your project via File > Share > File.
One thing to understand about iMovie's approach: Crop to Fill scales the cropped region up to fill iMovie's project frame (typically 16:9). So if you crop a small area, iMovie enlarges it, which can soften the image. This is different from a true crop that simply outputs a smaller frame — a distinction worth knowing if sharpness matters. iMovie is still an excellent free option for most casual cropping, especially if you're already trimming and arranging clips.
Method 4: Final Cut Pro (Professional, Precise)
If you own Final Cut Pro (Apple's professional editor, a paid one-time purchase), you get precise, frame-accurate cropping with several modes.
- Add your clip to the timeline and select it.
- In the viewer, open the Crop menu at the bottom (or press Shift-C).
- Choose from three modes:
- Trim — hides edges without scaling (a true crop in the technical sense).
- Crop — cuts the frame and scales the result to fill.
- Ken Burns — animated pan-and-zoom cropping.
- Drag the on-screen handles, or type exact values in the Inspector for pixel precision.
- Export via File > Share > Master File.
Final Cut Pro is overkill if all you need is a one-off crop, but if you're already editing in it — color grading, adding transitions, mixing audio — the built-in crop tools are powerful and precise. The Inspector's numeric fields give you the exact control that Photos and iMovie lack. For serious video work on Mac, this is the professional answer to how to crop a video on Mac.
Method 5: FFmpeg (Exact Pixel Control From the Terminal)
For the ultimate in precision and repeatability, nothing beats FFmpeg — a free, open-source command-line tool. It's the only method here that lets you specify the crop down to the exact pixel and script it across many files. If you're comfortable in Terminal, this is the most powerful way to crop a video on Mac.
Install it with Homebrew (brew install ffmpeg), then the basic crop command is:
ffmpeg -i in.mp4 -vf "crop=w:h:x:y" out.mp4
The magic is in the crop filter (-vf means "video filter"). Its four parameters are:
w— the width of the output crop, in pixels.h— the height of the output crop, in pixels.x— the horizontal offset: how many pixels from the left edge of the source the crop begins.y— the vertical offset: how many pixels from the top edge of the source the crop begins.
The x and y coordinates point to the top-left corner of your crop rectangle, measured from the top-left of the original frame. So crop=w:h:x:y reads as "cut out a w-by-h box whose upper-left corner sits at (x, y)."
A few concrete examples:
# Crop a centered 1080x1080 square from a 1920x1080 clip
ffmpeg -i in.mp4 -vf "crop=1080:1080:420:0" out.mp4
# Crop the left half of a 1920x1080 video
ffmpeg -i in.mp4 -vf "crop=960:1080:0:0" out.mp4
# Crop 100px off every edge using FFmpeg's built-in width/height variables
ffmpeg -i in.mp4 -vf "crop=in_w-200:in_h-200:100:100" out.mp4
That last example is handy: in_w and in_h are FFmpeg variables for the input width and height, so you can crop relative to the source without hardcoding dimensions. If you omit x and y entirely (crop=1080:1080), FFmpeg centers the crop automatically.
FFmpeg has a steeper learning curve than the GUI apps, but it's unbeatable for batch jobs, exact dimensions, and reproducible results. For a deeper walkthrough with more examples, see our dedicated guide on how to crop a video with FFmpeg.
Comparison: Which Method Should You Use?
Here's how the five methods stack up so you can pick quickly.
| Tool | Free? | Difficulty | Best For |
|---|---|---|---|
| QuickTime Player | Yes | Very easy | Trimming and rotating only — cannot crop the frame |
| Photos app | Yes | Very easy | Fast visual crop with zero setup |
| iMovie | Yes | Easy | Casual cropping inside a real timeline |
| Final Cut Pro | Paid | Moderate | Precise, professional editing workflows |
| FFmpeg | Yes | Advanced | Exact pixel control and batch processing |
The quick decision guide:
- Just need one clip cropped, fast? Use the Photos app.
- Already editing a project? Use iMovie (free) or Final Cut Pro (if you own it).
- Cropping dozens of files or need exact dimensions? Use FFmpeg.
- Only need to shorten or rotate, not crop? QuickTime is fine.
How Compresto Helps: Compress the Cropped Result
Here's the part most tutorials skip. After you crop a video on Mac, the file is often still large — sometimes even larger than the original. That's because cropping changes the frame, not the compression, and most editors re-export at high bitrates. A cropped 30-second clip can easily land at 80–150 MB, which is awkward to upload, email, or post.
This is where Compresto comes in. To be clear about scope: Compresto is a compression and conversion app — it does not crop the frame. Cropping is a job for the editors above. What Compresto does brilliantly is take your cropped output and shrink it, so it fits the finishing step of your workflow perfectly.
Compresto uses Apple's VideoToolbox for hardware-accelerated encoding on Apple Silicon, so a cropped clip compresses in seconds rather than minutes — the dedicated media engine handles the work instead of pinning your CPU. Typical results are 40–70% smaller files with no perceptible quality loss. It also supports batch processing, so if you cropped a whole folder of clips in FFmpeg, you can drag them all into Compresto and compress the lot in one pass.
The natural pipeline looks like this: crop in Photos, iMovie, Final Cut Pro, or FFmpeg → compress in Compresto → upload. You get the exact frame you want and a file small enough to actually use. If you want to dig into the compression side, our guides on how to compress video on Mac and reduce video file size on Mac cover the details.
And if you're cropping for streaming, getting the encoding settings right matters just as much as the frame — our note on the best bitrate for Twitch pairs well with a properly cropped source.
FAQ: Cropping Video on Mac
Q: Can QuickTime Player crop a video on Mac?
No. QuickTime can trim a video (cut the beginning and end) and rotate it, but it has no tool to crop the frame or change the aspect ratio. For actual cropping, use the Photos app, iMovie, Final Cut Pro, or FFmpeg. This is the single most common misconception about cropping on Mac.
Q: What's the difference between crop, trim, and resize?
Cropping removes pixels from the edges of the frame, changing what's visible. Trimming cuts time — the start or end of the clip — leaving the frame intact. Resizing keeps the entire frame but changes its pixel dimensions. They're three different operations, and knowing which one you actually need saves a lot of frustration.
Q: How do I crop a video on Mac for free?
The Photos app is the easiest free option — open the video, click Edit, use the Crop tool, and drag the handles. iMovie's Crop to Fill is another free route with a full timeline. FFmpeg is free too and offers exact pixel control from the terminal for anyone comfortable with the command line.
Q: What does the FFmpeg crop filter mean?
The syntax is crop=w:h:x:y. w is the output width, h is the output height, and x and y are the pixel coordinates of the top-left corner where the crop starts, measured from the top-left of the source frame. So crop=1080:1080:420:0 cuts a 1080×1080 square beginning 420 pixels from the left edge.
Q: Why is my cropped video still a large file?
Because cropping changes the frame, not the compression. Most Mac editors re-export at high bitrates, so the cropped file can stay large or even grow. Run it through a dedicated compressor like Compresto to shrink it with hardware-accelerated encoding — often 40–70% smaller with no visible quality loss.
Cropping on Mac isn't hard once you know that QuickTime can't do it and which tool fits your goal. Pick the Photos app for speed, iMovie or Final Cut Pro for editing projects, and FFmpeg for precision and batch work — then finish by compressing the result so the file is actually usable.
Download Compresto for Mac and compress your cropped clips with hardware-accelerated encoding — fast, batch-ready, and dramatically smaller files with no quality loss.