How to Crop a Video

Cropping a video is different from trimming. Trimming removes time from the beginning or end. Cropping removes pixels from the frame — like cropping a photo, but for video. It changes the aspect ratio or zooms into a specific area.

Common reasons to crop

Change aspect ratio for social media:

• Horizontal video → vertical (9:16) for TikTok, Reels, Stories
• Horizontal → square (1:1) for Instagram feed
• Vertical → horizontal for YouTube

Remove distractions: cut out junk at the edges of frame (someone walking by, branding overlays, dead space).

Zoom in on subject: tighten the framing on the important content.

Hide private information: remove license plates, faces, addresses visible at frame edges.

On iPhone (Photos app)

Limited but works for basic crops:

1. Open video in Photos
2. Tap Edit
3. Tap the crop icon
4. Drag corners to set new crop
5. Tap Done

Photos crops with simple corners; no precise aspect ratio control.

On iPhone (iMovie)

Better control:

1. Open iMovie
2. Create new project, drag in video
3. Tap the video → use Crop tool
4. Position the crop box
5. Export

On Android (Google Photos)

1. Open video in Google Photos
2. Tap Edit
3. Use crop tool with aspect ratio options (square, 16:9, custom)
4. Save copy

On Mac (iMovie)

Free, built-in:

1. New movie project
2. Drag video in
3. Click video → Cropping tool
4. Choose Crop to Fill (preset aspects) or custom
5. Export

On Mac (QuickTime)

Limited; basic editor without crop. Use iMovie or third-party tools instead.

On Windows (Clipchamp)

Built-in to Windows 11:

1. Open Clipchamp
2. Import video
3. Drag to timeline
4. Crop tool in toolbar
5. Export

Cross-platform: CapCut

CapCut (free, cross-platform):

1. Import video
2. Tap Edit → Crop
3. Choose aspect ratio (16:9, 9:16, 1:1, 4:5, custom)
4. Position the crop
5. Export

CapCut handles most casual cropping needs well.

Desktop: HandBrake

For technical control:

1. Open HandBrake
2. Add video
3. Dimensions tab → Cropping
4. Set Top, Bottom, Left, Right pixels to crop
5. Click Start Encode

Precise pixel-level control. Less visual than other tools.

Desktop: FFmpeg

ffmpeg -i input.mp4 -vf "crop=W:H:X:Y" output.mp4

Where W:H is the crop dimensions and X:Y is the top-left corner. Example to crop to a 1080×1080 square from the center of a 1920×1080 video:

ffmpeg -i input.mp4 -vf "crop=1080:1080:420:0" output.mp4

Powerful but requires manual coordinate calculation.

Aspect ratios cheat sheet

Common video aspect ratios:

Aspect	Use case	Pixel example
16:9	YouTube, TV, computer monitor	1920×1080
9:16	TikTok, Reels, Stories	1080×1920
1:1	Instagram feed (legacy)	1080×1080
4:5	Instagram portrait	1080×1350
2.35:1	Cinematic widescreen	1920×817
3:4	Older content	1440×1920

Cropping for different platforms

TikTok: 9:16 (vertical). 1080×1920 is standard.

YouTube: 16:9 (horizontal). 1920×1080 standard; 4K at 3840×2160.

Instagram feed: square (1:1) or portrait (4:5) work; landscape (16:9) gets letterboxed.

Instagram Reels / Stories: 9:16 (vertical).

Twitter/X: 16:9 typically; 9:16 also accepted.

LinkedIn: 16:9 standard; 9:16 for native.

For “I need this on multiple platforms”: crop to 9:16 first (works on Stories, TikTok, Reels), then create a separate 16:9 version for YouTube/Twitter.

Quality considerations

When cropping:

• Smaller crop than original: no quality loss (you’re using actual pixels)
• Upscaling after crop: losing detail; the cropped portion gets stretched to fit a larger frame
• Same dimensions: no quality change for the kept portion

For best results: shoot video at higher resolution than your target. A 4K source cropped to 1080p still looks crisp.

Pixel calculations

If a 1920×1080 video cropped to 9:16:

• New width: 1080 (or smaller, if you want even narrower)
• New height: 1920 (or scale to match)
• Original height (1080) becomes the new max width (1080) in a 9:16 frame
• Actually you’d crop horizontally to ~607×1080, then might upscale to 1080×1920

The math gets complex. Use a video editor with visual cropping rather than manual coordinates.

Common scenarios

Filming horizontal but need vertical: crop the center vertical 9:16 portion. Loses content on the sides.

Wide shot too distant: crop to zoom in on the main subject. Loses peripheral context.

Branded video for Instagram: crop to square or portrait, adjusting for visible content.

Multi-camera content: each camera might need different cropping for the same final aspect ratio.

After cropping

• Extract audio if needed: MP4 to MP3 for audio-only use
• Compress further: see Compress Video
• Trim: see Trim or Cut Video for time-based edits
• Add subtitles: see Add Subtitles

TL;DR

• Cropping = removing pixels from frame (different from trimming, which removes time)
• Mobile: Photos/iMovie (iPhone), Google Photos (Android), or CapCut
• Mac: iMovie has crop tool
• Windows: Clipchamp
• Cross-platform: CapCut, HandBrake, FFmpeg
• Common aspect ratios: 16:9 (YouTube), 9:16 (TikTok/Reels), 1:1 (Instagram)
• Best results from high-resolution source — gives more room to crop