Trim a video
Keep just the part of a video you want. Drop in your file, set a start and end time, and download the trimmed clip. The cut is done in your browser, so your video is never uploaded.
How to use Trim Video
- 1
Add your video
Drag a video file into the drop area, or click to choose one from your device.
- 2
Set start and end
Enter the start and end time, in seconds, of the section you want to keep.
- 3
Trim
Click trim and In1 cuts the clip locally in your browser. The first run loads the engine.
- 4
Download
Save the trimmed clip. Your video was never uploaded anywhere.
Cut a clip down to what matters
Most videos contain more than you need. There is dead air at the start while the camera settles, a long tail after the action is over, or a single moment in the middle that is the only part worth keeping. Trimming lets you cut the video down to just that span, so you can share a tight clip instead of asking people to scrub through minutes of filler. In1 makes this simple: you set a start time and an end time, and the tool produces a new video containing only that section. It is perfect for grabbing a highlight from a longer recording, removing the boring beginning and end of a screen capture, or isolating the exact few seconds you want to send. Because you keep only the portion you choose, the resulting file is also smaller and quicker to upload or message — you are sending the moment, not the whole reel. Setting a precise start and end also means you do not have to rely on whoever watches it to skip ahead; the clip simply begins where the interesting part begins and ends where it ends, which is exactly what a viewer expects from something shared deliberately rather than a raw recording dumped in full.
Fast, because it doesn't re-encode
Trimming on In1 is built for speed. Instead of re-encoding the whole video — which is slow, especially in the browser — it copies the existing audio and video streams directly into the new clip, simply discarding everything outside your chosen range. That means trimming is dramatically faster than a full conversion and there is no loss of quality at all, since the original frames and audio are passed through untouched. The trade-off worth knowing about is that, to keep this speed and quality, the cut snaps to the nearest keyframe near your start point, so the clip may begin a fraction of a second from the exact time you typed. For the vast majority of uses that is imperceptible, and in return you get a near-instant, lossless trim instead of a long wait while every frame is rebuilt.
Runs in your browser — private and free
The cut happens entirely on your own device using ffmpeg compiled to WebAssembly, so your video is never uploaded to a server, stored or logged. That privacy is important, because the videos people trim are often personal: family recordings, clips of friends, screen captures that may show private information, or footage that simply is not meant to be public. With In1 there is no upload, no account, no watermark on the output and no daily limit. Because the processing is local it leans on your device's resources rather than a server, so there is a sensible size limit on the video you can load, and very long files are best handled by a desktop application. For the typical clip you want to shorten, though, trimming in the browser is fast, completely private, and free, with nothing leaving your machine and no waiting on an upload or a queue.
The first trim loads the engine
Because the trimming engine runs locally, the ffmpeg core downloads to your browser the first time you use a video or audio tool here. It happens once and is then cached, so later operations start much faster and even work offline. While the engine loads and while your clip is being produced, a progress indicator shows that the tool is working and has not stalled. Trimming itself is quick since it copies streams rather than re-encoding them, so the bulk of any wait on the very first use is simply that one-time engine download. None of this requires any setup from you — it is the trade-off that makes private, on-device video editing possible without installing anything. Once the engine is cached, trimming feels close to instant for typical clips, and you can cut as many videos as you like for free.
Who trims videos and why
The need shows up constantly. People cut a highlight out of a long phone recording to share on a chat or social feed. Creators trim the dead space off the start and end of a screen recording before posting a tutorial. Someone preparing a clip for a presentation isolates the exact segment they want to show. Players trim a gameplay moment worth keeping. Anyone sending a video by message cuts it down to fit a size limit or to respect the recipient's time. Teachers and students clip the relevant portion out of a recorded lecture. In every case the goal is the same: take a longer video and keep only the part that matters, producing a smaller, sharper clip — and do it quickly, privately and for free, without uploading personal footage to a server or installing video-editing software for one simple cut. It also pairs naturally with the other media tools: trim a clip down first, then convert it to a different format or turn it into a GIF, all locally and in a few seconds.
Higher limits, batch processing and an API are on the way. Want early access?