Is my video uploaded to a server?

No. The entire trim happens inside your browser. Your video is read into memory on your own device, the selected segment is cut locally by a WebAssembly build of FFmpeg, and the trimmed MP4 is handed straight back to you as a download — no byte of the video is ever sent to us or anyone else. This is especially valuable for trimming because the original is often a long, private recording; here only the short clip is produced, and the full file never leaves your machine. Close the tab and nothing is retained.

How do I enter the start and end times?

You can type times in three ways: plain seconds (for example 15 means fifteen seconds), minutes and seconds (00:15), or hours, minutes and seconds (00:00:15). Decimals are allowed for sub-second precision, such as 15.5. Leave the start field blank to begin from the very start of the video, and leave the end field blank to run through to the end. The tool shows the video’s total duration so you know the valid range, and it checks that your end time is after your start time and within the video.

Is the cut exact, or does it jump to the nearest keyframe?

It is exact. This tool re-encodes the selected segment rather than copying it, which means the clip begins and ends precisely at the times you entered, down to the frame. Many fast trimmers copy the video without re-encoding and can only cut at keyframes, so their clips often start a second or two early or open on a frozen frame. By re-encoding, this trimmer avoids that and gives you a clean, frame-accurate cut — which is the whole point of trimming to a specific moment.

What format is the trimmed clip?

The trimmed clip is always an MP4 with H.264 video and AAC audio, regardless of the input format. MP4 with H.264 is the most universally playable combination — it works on virtually every phone, browser, and app without extra codecs. So whether you start from an MP4, MOV, WebM, or MKV, you get back a clean MP4 clip that just plays everywhere.

Is there a limit on video size?

Yes — 500 MB. Because the work is done entirely by your own device inside a browser tab, the whole video has to fit in the tab’s memory while the segment is cut, and very large files would risk crashing the tab. A 500 MB cap keeps the process reliable. Note that the tool reads the entire source video to reach your selected segment accurately, so trimming a short clip from a large file still depends on the source file being within the limit.

Convert

Trim Video

Cut a video to an exact start and end time and download the clip as an MP4 — frame-accurate, right in your browser. Works with MP4, MOV, WebM, and MKV. Nothing is uploaded. Free, no signup.

By the Samastam teamLast updated 2026-06-14

Drop a video here, or click to browse

Everything runs in your browser — nothing is uploaded

A video trimmer cuts a video down to just the part you want, between a start time and an end time. This tool lets you type an exact start and end — in seconds, minutes and seconds, or hours, minutes and seconds — and returns precisely that segment as an MP4, entirely inside your browser. The cut is frame-accurate: because the selected segment is re-encoded rather than copied, the clip begins and ends exactly where you asked, with no drift to the nearest keyframe. Because the work happens locally, your full recording never leaves your device — a long lecture, an interview, a match recording — only the trimmed clip is produced, on your own machine.

What this is and why it matters

Most useful video lives inside a much longer recording. A two-hour lecture contains the ten minutes that actually matter for an exam. A long phone recording of a cricket match contains the one over everyone wants to see. An interview recorded end to end contains the single answer worth sharing. A screen recording often has thirty seconds of fumbling at the start before the real demonstration begins. In every case the need is the same: keep one continuous segment and discard the rest. Trimming is how you get from a long, unwieldy file to the short clip you can actually send, post, or save.

This tool trims in the browser rather than on a server, for the same privacy reason as the rest of the toolkit. The recordings people trim are often long and personal — a full lecture, a private interview, hours of family footage — and uploading the entire file to a website just to keep thirty seconds of it is both slow and a privacy risk. Here, the whole video is read into memory on your own device, the chosen segment is cut locally, and only the trimmed clip is produced. Nothing is transmitted and nothing is stored.

What sets this trimmer apart is frame accuracy. Many fast trimmers copy the video without re-encoding, which is quick but can only cut at keyframes — so the clip often starts a second or two before you asked, or opens on a frozen frame. This tool re-encodes the selected segment instead, so the cut lands exactly on the start and end you typed. For trimming, that precision is the whole point: when you ask for 00:15 to 00:42, you get exactly that.

How to use this tool

Add your video. Drag the file onto the drop zone above, or click it to open the file picker and choose a video from your device. MP4, MOV, WebM, and MKV are all accepted. The moment it is selected, the tool reads it locally and shows the file name, its size, and its total duration, so you know the range you can trim within. Nothing uploads — everything happens on your own machine. Files must be under 500 MB.

Enter the start and end times. Type when the clip should begin and end. You can use plain seconds (for example 15), minutes and seconds (00:15), or hours, minutes and seconds (00:00:15), and you can include decimals for sub-second precision. Leave the start blank to begin from the very beginning, or leave the end blank to run through to the end of the video. The tool checks that the end is after the start and within the video’s duration, and tells you clearly if something is off.

Let the engine load on first use. The first time you trim, the tool downloads a one-time engine of about 30 MB into your browser. This happens only once — afterwards it is cached and later trims start immediately.

Trim and download. Press Trim Video and the tool cuts the selected segment, showing a live percentage as it works. You can cancel at any time. When it finishes, it shows the length and size of the trimmed clip and offers it for download as an MP4 named after your original video.

Examples and use cases

Clipping one concept out of a two-hour lecture

A Kota student has a recorded two-hour physics lecture but only needs the ninety-second explanation of one concept to revise before an exam. They enter the start and end times — say 41:30 to 43:00 — and the tool returns exactly that ninety-second clip as an MP4, small enough to keep on their phone and replay. The full two-hour recording never left their laptop.

Cutting the highlight from a match recording

A cricket fan in Indore recorded a long video of a local match on their phone and wants just the over where the winning runs came. They type the start and end of that over, and the tool produces a short, frame-accurate clip they can share on WhatsApp with friends — without uploading the whole lengthy match video anywhere.

Removing dead time from the start of a screen recording

A Bengaluru developer recorded a screen demo but the first forty seconds are just window-arranging before the real walkthrough. They leave the end blank to keep everything through to the finish and set the start to 00:40, trimming off the dead time so the shared clip gets straight to the point.

Fitting a clip under a 60-second status limit

A Jaipur boutique owner wants to post a product clip to a status feed capped at sixty seconds, but their video is seventy-five seconds long. They trim it precisely to the best sixty seconds — for example 00:08 to 01:08 — so it fits the limit exactly, with the cut landing on the frames they chose.

Frequently asked questions

Is my video uploaded to a server?: No. The entire trim happens inside your browser. Your video is read into memory on your own device, the selected segment is cut locally by a WebAssembly build of FFmpeg, and the trimmed MP4 is handed straight back to you as a download — no byte of the video is ever sent to us or anyone else. This is especially valuable for trimming because the original is often a long, private recording; here only the short clip is produced, and the full file never leaves your machine. Close the tab and nothing is retained.
How do I enter the start and end times?: You can type times in three ways: plain seconds (for example 15 means fifteen seconds), minutes and seconds (00:15), or hours, minutes and seconds (00:00:15). Decimals are allowed for sub-second precision, such as 15.5. Leave the start field blank to begin from the very start of the video, and leave the end field blank to run through to the end. The tool shows the video’s total duration so you know the valid range, and it checks that your end time is after your start time and within the video.
Is the cut exact, or does it jump to the nearest keyframe?: It is exact. This tool re-encodes the selected segment rather than copying it, which means the clip begins and ends precisely at the times you entered, down to the frame. Many fast trimmers copy the video without re-encoding and can only cut at keyframes, so their clips often start a second or two early or open on a frozen frame. By re-encoding, this trimmer avoids that and gives you a clean, frame-accurate cut — which is the whole point of trimming to a specific moment.
What format is the trimmed clip?: The trimmed clip is always an MP4 with H.264 video and AAC audio, regardless of the input format. MP4 with H.264 is the most universally playable combination — it works on virtually every phone, browser, and app without extra codecs. So whether you start from an MP4, MOV, WebM, or MKV, you get back a clean MP4 clip that just plays everywhere.
Is there a limit on video size?: Yes — 500 MB. Because the work is done entirely by your own device inside a browser tab, the whole video has to fit in the tab’s memory while the segment is cut, and very large files would risk crashing the tab. A 500 MB cap keeps the process reliable. Note that the tool reads the entire source video to reach your selected segment accurately, so trimming a short clip from a large file still depends on the source file being within the limit.