How do I crop a video to 16:9 aspect ratio?

Upload your video, click the 16:9 preset button, then click Apply & Download. The tool will automatically crop from the center to the correct 16:9 dimensions.

Can I set a custom crop area?

Yes. Use the X (left offset), Y (top offset), Width, and Height fields to enter any pixel values. The crop area must fit within the original video dimensions.

Is my video uploaded to a server?

No. All processing is done inside your browser using FFmpeg.wasm. Your files never leave your device.

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✂️ Video Crop

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Upload Video

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Drop a video file here

or tap / click to browse — MP4, MKV, MOV, AVI, WebM supported

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About This Tool

This tool uses FFmpeg.wasm to crop video inside your browser using the crop filter. Choose a preset aspect ratio (16:9, 4:3, 1:1 square, 9:16 portrait) for center-cropping, or manually enter X/Y offset and width/height for a precise pixel crop. Output is exported as MP4 (H.264).

🎬 MP4 · MKV · MOV · WebM

📐 Preset & custom crop

✓ Zero server transmission

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Frequently Asked Questions

Are my videos uploaded to a server?

No. All cropping is done using FFmpeg.wasm which runs entirely in your browser. Your video files never leave your device and are never transmitted to any server.

Can I set custom crop dimensions?

Yes. You can enter precise pixel values for width, height, and position (X/Y offset) to crop to any exact area of the video frame you need.

What aspect ratios are available?

Preset aspect ratios include 16:9 (widescreen), 4:3 (standard), 1:1 (square), and 9:16 (vertical/portrait). You can also set a fully custom size using the pixel input fields.