✂️ Video Cropper
Cuts a segment from a local video using ffmpeg.wasm with -ss, -t and -c copy, so the selected range is remuxed instead of re-encoded - quick, and the picture quality stays exactly as it was. The trade-off is that stream copy aligns to keyframes, so the cut can start a little before or after the timestamp you typed. The roughly 25 MB runtime is cached after the first load and nothing is uploaded.
- MethodStream copy (-c copy)
- ControlsStart time and duration
- Re-encodeNo
- UploadNever - local
When a stream-copy cut is accurate enough
| Your situation | What -c copy actually does | Better move |
|---|---|---|
| Removing a 30 s intro from a webinar | Seeks to the nearest keyframe and remuxes from there | Check the first seconds; if the cut lands late, nudge the start earlier |
| Frame-exact edit for a product demo | Keyframe spacing decides where the cut can land | Use a re-encoding editor for frame-accurate trimming |
| Keeping the original quality | No re-encode, so the video bitstream is untouched | This is the right tool - just verify the boundary frames |
| Very long recording, short excerpt | Only the chosen time range is written out | Enter a duration rather than processing every second |
| Source with sparse keyframes | The cut may begin several seconds from your timestamp | Re-encode once with denser keyframes, then crop |
| Audio must start exactly on a word | Audio is copied on the same keyframe boundary | Trim audio separately if the opening sync matters |
Video Crop: Crop video to any aspect ratio
Video Crop lets you crop video to any aspect ratio. Upload video files and get a cropped video — all processed locally in your browser, with no uploads and no sign-up.
Crop vertical video to 16:9 for YouTube
Crop vertical video to 16:9 for YouTube. This is one of the most common reasons people reach for Video Crop — and it handles the job in seconds, entirely in your browser.
Reframe a video for Instagram squares
Reframe a video for Instagram squares. This is one of the most common reasons people reach for Video Crop — and it handles the job in seconds, entirely in your browser.
Remove unwanted borders from footage
Remove unwanted borders from footage. This is one of the most common reasons people reach for Video Crop — and it handles the job in seconds, entirely in your browser.
Everything You Need in a Video Crop
Powerful features that make Video Crop fast, private, and free.
Precise Dimensions
Set exact pixel sizes or percentages for pixel-perfect results.
Aspect-Ratio Lock
Maintain proportions automatically to avoid distortion.
Free-Form & Presets
Crop freely or use social-media-ready aspect-ratio presets.
100% Private
All processing is local — your images never leave your browser.
Free Forever
No sign-up, no watermarks, no hidden limits.
Cross-Platform
Works on any device with a modern browser.
How to Use
Upload the video
Add the clip you want to trim or crop.
Set the time window
Choose the start and end time to cut out the section you want, or crop the frame dimensions.
Run the operation
The tool processes the video in your browser with FFmpeg.
Download the result
Save the trimmed or cropped clip for sharing.
Detailed User Guide
Trim or crop a video clip
Set a start and end time to trim the clip, or crop the frame to focus on a region — both are handled locally in your browser.
Trimming removes unwanted sections
Cut out the intro, outro, or a dead spot by setting precise start and end times, leaving only the part you actually want.
Cropping focuses the frame
Crop the edges to remove black bars, zoom into a subject, or fix an awkward framing before sharing.
Processed locally with FFmpeg
The operation runs in your browser via WebAssembly FFmpeg, so your footage never uploads to a server.
Preview the timing before exporting
Confirm the start and end points are right before downloading, since trimming is applied at export time.
Trim first, then crop
Trim the timeline to the section you want first, then apply a frame crop to that shorter clip. Working in this order makes both the timing and framing easier to judge.
Aspect ratios for social platforms
Cropping to a platform-specific ratio before uploading avoids awkward letterboxing. Square, 4:5, and 16:9 are the common targets for feeds and stories.
Recommended Gear for Video & Podcasting
Audio and tools that speed up your video workflow.
DJI Mic Mini (2-pack)
Ultralight wireless lav mics with charging case — professional audio on the go.
FIFINE AM8 USB Microphone
USB/XLR dynamic mic — great for podcasts, streaming, and voiceovers.
UBeesize 60" Phone Tripod
Adjustable tripod with phone mount — perfect for product videos and live streams.
SanDisk Extreme SSD 1TB
Rugged portable SSD — fast backup for photos, videos, and large files.
Canon SELPHY CP1500
Wireless compact photo printer — print 4x6 photos from your phone.
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