Drop an MP4, MOV, WebM or MKV, drag two handles across a live filmstrip to frame the exact moment, and export just that segment. Powered by FFmpeg compiled to WebAssembly, it runs 100% in your browser. Your footage is never uploaded, and the download carries no watermark.
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What is the video trimmer?
The Video Trimmer cuts a clip by dragging two handles across a filmstrip of real frames to set in and out points to a tenth of a second, dimming the area outside your selection. Preview then download as MP4, WebM or MKV. Accepts MP4, MOV, WebM, MKV and AVI. Free, nothing uploaded.
The GigAI Video Trimmer is a proper in-browser cutting room for the one job that shouldn't require an account, an install or an upload: keeping the good part of a clip and dropping the rest. Drop a video and it probes the file locally, renders a scrubbable player and paints a filmstrip of real frames along the timeline so you can see what you're cutting. Two focusable handles set the in and out points down to a tenth of a second (drag them, nudge them with the arrow keys, or type exact timecodes) and the region outside your selection dims so the keep is obvious at a glance. When you export, a self-hosted FFmpeg WebAssembly core cuts the segment and hands it straight back as a download, then shows the trimmed size next to the original so you know exactly what you got. Because everything happens on your own machine, personal recordings, client footage and anything under NDA never leave the tab, there's no upload bar reaching out to the cloud, no queue behind other people's jobs, and no watermark stamped across your result. It's honest about the trade-offs, too: WASM FFmpeg is single-threaded and memory-bound, so it's slower than a desktop app and happiest with files up to roughly a few hundred megabytes. A live progress bar shows exactly where the cut stands the whole way through. Close the tab and every trace is gone.
Difficulty:
Medium
Typical time:
~1–2m
Processing:
100% browser processing
Last updated
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How to use the video trimmer
1
Drop your video
Drag an MP4, MOV, WebM or MKV onto the workspace, or click to browse. It's read and probed locally. Nothing is uploaded.
2
Set your start & end
Drag the two timeline handles across the filmstrip, or focus a handle and nudge it with the arrow keys, to frame the exact segment you want to keep. The rest of the clip dims out.
3
Trim & preview
Hit Trim and watch the progress bar. When it finishes, the trimmed clip plays back so you can confirm the cut is right before you save.
4
Download
Download the trimmed video, clean and watermark-free, and check the new size against the original right there on the result card.
What Video Trimmer includes
Frame-accurate dual-handle timeline
Drag two handles across a filmstrip of real video frames to set your in and out points to a tenth of a second. The area outside the selection dims so the part you're keeping is unmistakable.
Live filmstrip & scrubbable preview
See thumbnails from your actual footage along the track and a full player above it, so you frame the cut on what the video shows. Not on a guess at the timecode.
Keyboard-precise nudging
Focus a handle and nudge it with the arrow keys (a second at a time, or a tenth with Shift) plus Home/End to snap to the edges. Landing on the exact frame doesn't require a steady mouse hand.
Honest live progress
A determinate progress bar tracks the cut from start to finish, and a one-time note covers the first-run engine download. No spinner that leaves you wondering whether it hung.
Preview, size delta & one-click download
Play the trimmed result before you save it and see the new file size next to the original, then download the clip. No sign-up, no email, no watermark.
100% in your browser
A self-hosted FFmpeg WebAssembly core does the cutting on your device. Your video is never uploaded, queued or stored, which makes it safe for personal, client and NDA footage alike.
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Why use our video trimmer
Keep private footage private
The usual way to trim a clip online is to hand it to a random server. Here the cut runs on your machine, so recordings of your family, your clients or anything confidential never leave the tab.
No watermark, no account, no cap
Free video cutters love to stamp a logo across your export or gate the download behind a sign-up. This one just gives you the clip, clean, unbranded, and as often as you like.
Cut on what you can see
A live player plus a filmstrip of real frames means you set the in and out points on the moment itself, not on a raw timecode you're squinting to translate.
Nothing to install
No desktop editor, no plugin, no FFmpeg command line to memorise. Open the page in any modern browser and you're cutting in seconds. It even works offline once the engine has loaded.
Built for the way you work
From quick one-off fixes to daily workflows, see how people put this tool to use.
Content creator
Grab a highlight clip
Pull a tight 15-second moment out of a long screen recording or stream VOD for a short, without opening a heavyweight editor or uploading the whole session anywhere.
Marketer
Cut an ad to length
Trim a hero video down to the exact 6- or 15-second window a placement demands, previewing the frame it starts and ends on so the cut lands cleanly.
Teacher / Student
Clip the relevant bit
Keep only the two minutes of a lecture or demo that matter for a lesson or assignment, dropping the dead air on either side before you share it.
Anyone
Trim a phone video before sending
Chop the shaky start and the fumble at the end off a phone clip so it's shorter and lighter to text or email, without the footage ever touching a server.
Supported formats
Accepts MP4, MOV, WebM, MKV and AVI, and produces MP4, WebM and MKV, all processed locally in your browser.
Input formats
MP4
MOV
WebM
MKV
AVI
Output formats
MP4
WebM
MKV
Frequently asked questions
Use this in a workflow
See how the video trimmer fits into a step-by-step journey with related tools.
Hit a snag? Here are quick fixes for the issues people run into most.
The first trim is taking a while before the progress bar moves.
The very first run downloads the FFmpeg WebAssembly engine (a one-time fetch that's then cached). You'll see a 'loading engine' note during that step. Subsequent trims skip it and start cutting immediately.
It slowed to a crawl or ran out of memory on a big file.
In-browser FFmpeg is single-threaded and works in your tab's memory, so very large or long high-bitrate clips are demanding. Keep inputs loosely under a few hundred megabytes. On a huge file, trim a rough range first or use a shorter selection.
The cut starts or ends a fraction off where I set it.
For accurate boundaries the trimmer re-encodes around your exact in/out points rather than snapping to the nearest keyframe. If you need to fine-tune, focus a handle and nudge it with the arrow keys (Shift for tenth-of-a-second steps) and re-export.
My video won't load or preview.
The player relies on codecs your browser can decode. Very unusual or professional/DRM-protected formats may not preview. Try a mainstream container like MP4 or WebM, or convert the file first with the Video Converter.
Get the most out of it
Frame the cut in the player first, then fine-tune the handles: the filmstrip shows real frames so you can land on the exact moment.
Focus a handle and use the arrow keys for precision: ← / → move a second, Shift + arrow moves a tenth of a second, Home/End snap to the edges.
Trimming is one of the lightest operations, so it's the fastest way to shrink a video's size: a shorter clip is simply a smaller file.
For the snappiest results, keep inputs under a few hundred megabytes. The first run also downloads the engine once, so give trim #1 a moment.
Need a different container as well? Trim here first, then run the result through the Video Converter: cutting a shorter clip makes the conversion faster too.
What's new
Recent updates and improvements to the video trimmer.
Initial release, drag-and-drop input, scrubbable player, dual-handle timeline over a live filmstrip, frame-accurate in/out points, in-browser FFmpeg WebAssembly cutting, live progress, preview, before/after size and watermark-free download.
Added keyboard-precise handle nudging (arrow keys, Shift for tenth-of-a-second steps, Home/End) and a clearer one-time engine-loading note on the first trim.
Improved probing for MOV/MKV sources and tightened the large-file guidance so heavy clips warn before they start rather than mid-cut.
Your video is read, probed, previewed and trimmed entirely in your browser using a self-hosted FFmpeg WebAssembly core. It is never uploaded to any server, queued, logged or stored. That makes the trimmer safe for personal recordings, client footage and anything under NDA. There's no account and no watermark, and once the engine has loaded the tool keeps working offline. Close the tab and every trace is gone.
Runs in your browser
No uploads
Nothing stored
Ready to try the video trimmer?
Free, private and instant. Video Trimmer runs right in your browser.