Your browser cannot show a live preview for this format (e.g. MKV). The tool still works - enter the times below in seconds.
Export always re-encodes this video, which is what makes the cut frame-accurate - unlike the faster sibling tool "Trim video", which stays lossless but snaps the start to the nearest keyframe.
Running locally on your device ...
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No re-upload needed
These tools accept .MP4 - your file is handed over directly.
No processing of your file contents takes place on any server. You need no data-processing agreement with gottrix to handle confidential or business documents.
Hosted in GermanyGlobal Content Delivery
Origin servers at Hetzner in Germany, delivered worldwide through a content delivery network. Your file contents are never transmitted in the process - they never leave your device.
Trimming a video, removing its audio and changing the format - normally three separate tools, one after another. The video editor instead opens a full-screen workspace: a top bar with target format and export button, the video preview in the middle, a draggable trim timeline underneath and an audio choice. Every change runs in ONE pass through your browser's native WebCodecs engine, not as a chain of several re-encodes.
Important distinction from the sibling tool "Trim video": that fast tool cuts losslessly but snaps the start to the nearest keyframe. This editor re-encodes on export and therefore cuts frame-accurately at the exact second you chose - honestly paid for with a bit more processing time than a pure stream copy. For a quick, no-re-encode cut, use "Trim video"; for a whole editing session with audio and format in one pass, use this editor.
Everything runs locally in the browser with mediabunny (MPL-2.0, self-hosted, no third-party CDN) on the browser's native WebCodecs API. Your video is not uploaded - after the first load the editor even works offline.
Online video editors as many people know them usually put a watermark-free export behind a subscription, cap the video length on the free tier, or upload your recording to a server as a first step. This editor has none of that: export without a watermark, without a time limit and without an account, because the whole edit runs locally in the browser - on any device with a current, WebCodecs-capable browser.
Specifications
Specifications
Input formats
MP4, M4V, MOV, MKV, WEBM
Auto-conversion
PNG, GIF
Output formats
MP4, WebM
Batch processing
No
Processing
Locally in your browser (WebCodecs)
File upload
None
In 3 steps
Drop your video file - the editor opens in full screen with a live preview.
Drag the start and end on the timeline, choose the audio (original/mute) and target format (MP4/WebM).
Click Export and download the edited video.
Limitations: Export always re-encodes (frame-accurate cut instead of a keyframe snap) - for a purely lossless cut without re-encoding, use the faster sibling tool "Trim video". Audio is original or fully muted only, no mixing several tracks and no background music yet (planned for a later version). Target format is MP4 or WebM only. One file per session, ~1 GB limit (4 GB/tab in the browser). Needs a secure context (https) and browser WebCodecs support.
FAQ
Is my video uploaded?
No. The whole editor runs locally in your browser - even in airplane mode.
What is the difference from "Trim video"?
"Trim video" is lossless but snaps the start to the nearest keyframe. This editor re-encodes and therefore cuts frame-accurately, and can also adjust audio and format in one pass.
Does the video lose quality?
Export re-encodes, which causes a small, usual amount of quality loss at unchanged resolution. If the start stays at 0 seconds and the codec fits the target format, the tool copies picture and sound losslessly where possible.
Can I add background music?
Not yet - that is planned for a later version. Right now audio can only be set to original or mute.
Why only MP4 and WebM as targets?
Those are the two formats your browser's WebCodecs re-encoding can write directly. For MOV or MKV, use the sibling tool "Convert video".
Does the editor work on a phone too?
In principle yes, as long as the mobile browser supports WebCodecs - but the full-screen workspace is designed for a larger screen and is more comfortable to use on desktop.
Is there a watermark or an account?
No. No watermark, no account, no length limit other than your device memory.
Is it safe to edit a private video here?
Yes. Editing runs entirely locally, your video is not uploaded - test it in airplane mode, the editor keeps working.