REFRAME AN MP4

Crop MP4 Online

Reframe an MP4 for a new composition or aspect ratio without opening a desktop editor.

✓ MP4 input✓ Interactive crop preview✓ Square, landscape and portrait presets

✓ No account required✓ Live progress✓ Automatic cleanup

Converter readyUp to 400 MB per request • 250 MB per file

250 MB per file400 MB per request45 min max video~30 min auto-delete

Drop MP4 files here or click to browse from your device No files selected MP4, MOV, MKV, AVI, WebM, MP3, WAV, FLAC, M4A, AAC, OGG, OPUS + more

Convert to Recommended MP4 is recommended for broad video compatibility.

Output quality

Highlarger file Balancedrecommended Smallermore compression

Smart output: MP4Best overall compatibility for video playback and sharing.

Size depends on source

Crop settingsFine-tune the output

Maximum resolutionNever intentionally upscales; server limit: 1080p. Audio bitrateUsed by compressed audio outputs and video audio tracks. Sample rate48 kHz is common for video production. Output filename

.mp4

Available for single-file conversion. Trim startOptional HH:MM:SS or seconds. Trim endLeave blank to convert to the end. Remove audioCreate silent video output. Crop frameAspect presets use a centered crop. Custom crop widthUsed only when Custom pixels is selected. Custom crop heightUsed only when Custom pixels is selected. Custom X offsetPixels from the left edge. Custom Y offsetPixels from the top edge.

✓ Format-aware settings✓ Live queue progress✓ Files expire after ~30 min

WHY USE THIS TOOL

Reframe an MP4 around the part that matters

Cropping can remove empty edges, center a subject or adapt framing for a different display shape.

Square 1:1

Useful for balanced square framing.

Portrait 9:16

Create a tall frame for vertical viewing.

Custom pixels

Use precise width, height and offsets when a specific crop is required.

HOW IT WORKS

How to crop an MP4

1
Upload an MP4
Choose the source file.
2
Select or drag the crop
Use an aspect preset or custom crop values.
3
Export cropped MP4
Download the reframed video after processing.

Good to know

Cropping removes pixels outside the selected frame. Keep the original if you may need the full composition later.

RELATED TOOLS

More Ways to Work With Your Media

Use a focused tool when you know the task, or open the universal converter for full format control.

QUICK ANSWERS

MP4 Cropper FAQ

Can I crop MP4 to 9:16?

Yes. Select Portrait 9:16.

Can I make a square MP4?

Yes. Select Square 1:1.

Can I enter exact pixel dimensions?

Yes. Choose Custom pixels and enter the crop size and offsets.