Private video trimmer
Private Video Trimmer for sensitive footage
Trimming is often the operation where the most sensitive moment of a video is removed: the few seconds someone said something off the record, the bit of background a viewer should not see, the part the client asked to be cut. A cloud trimmer sees both halves of that cut, which is unintuitive but architecturally true.
Try it now
The trim tool runs the same browser-local engine described on this page.
Why this matters
A browser-local trimmer sees neither. The source file is read into memory, the cut points are applied through FFmpeg WebAssembly, and the trimmed output is written back to your disk. The frames that get discarded never travel anywhere; they were always only in your laptop's RAM.
For investigative work, exit-interview clips, supervisor reviews, and other footage where the trimmed-out portion is the whole point of trimming, browser-local is the only correct shape.
What you actually get
Both halves of the cut stay local
The discarded section never reaches a server. Neither does the kept section. The trim happens in browser memory entirely.
Frame-accurate cut points
The timeline scrubs at frame precision. Cut points land exactly where you set them, not on the nearest keyframe.
No filename or metadata logged
We have no record that you trimmed file X to remove segment Y. The browser tab's memory is the only place that information ever existed.
Works for legal-hold and HR workflows
When the trim is for compliance, audit, or HR reasons, the architectural property of "no third party in the custody chain" satisfies the standard requirement.
How to trim a video privately
01 Open the Trim tool
Visit the page below. The browser caches FFmpeg WebAssembly after the first visit.
02 Drop the source video
Drag the file in. The browser reads it locally; no upload occurs.
03 Mark cut points
Scrub the timeline and set in and out points. Multiple cut sections are supported.
04 Trim and download
Run the trim. The trimmed MP4 is saved to your downloads folder. The discarded segments are not stored anywhere.
Frequently asked questions
Why is trim a privacy-sensitive operation?
Because the part you trim out is often the most sensitive part of the video. The whole purpose of the cut is to remove something. A cloud trimmer sees what you removed, which is the opposite of the goal.
Does the tool keep a copy of the original?
No. The source file stays where you put it (your disk). The trim produces a new output file, also on your disk. There is no server-side copy of either.
Can I trim multiple sections out of one video?
Yes. The Trim tool supports multiple non-contiguous cut points (jump cuts and inverse trims). Each cut is applied during the same local re-encode.
How accurate is "frame-accurate" in practice?
Cut points land within a single frame of where you set them. The encoder re-encodes a small portion around the cut to make it precise, which avoids the usual one-second snap-to-keyframe limitation.
What happens to the audio at the cut?
The audio is cut at the same point as the video, with a short crossfade by default to avoid clicks. The crossfade can be disabled for hard cuts.
Related Tools and Resources
Trim Video
The actual trim tool.
Trim, No Upload
Same architecture, no-upload framing.
Private Video Editor
Full timeline editor with the same privacy model.
Private Video Compressor
For file-size reduction after trimming.