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Trim Video

Cut the part you want out of any video in your browser — fast copy or frame-exact, no upload.

Best for: Cutting an intro/outro, extracting a highlight for social media, shortening a screen recording before sharing, or isolating one scene from a long recording.

Complete guide

Input

How it's calculated & sources

Method: ffmpeg (compiled to WebAssembly, served from this site) cuts your clip with -ss/-t. Fast copy keeps the original quality and finishes in seconds by cutting at keyframes; Frame-exact re-encodes to H.264 for a precise cut. The video never leaves your device.

Free & no sign-up · runs entirely in your browser. Results are estimates for general information, not professional advice — verify important decisions with a qualified expert. Last reviewed June 2026.

Frequently asked questions

Why does Fast copy start slightly before my time?+

Fast copy can only cut where the video has a keyframe — usually every 1-2 seconds. If the exact frame matters, use Frame-exact mode, which re-encodes precisely at the cost of speed.

What time formats work?+

Seconds (90), minutes:seconds (1:30), or hours:minutes:seconds (0:01:30). Leave the end field empty to keep everything after the start time.

Does trimming lose quality?+

Fast copy loses nothing — the frames are copied bit-for-bit. Frame-exact re-encodes at high quality (CRF 23), which is visually lossless for most videos.

Is my video uploaded?+

No. The trimmer runs entirely in your browser from this site's own domain. Nothing is sent anywhere.

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Complete guide

Quick answers

Short, sourced answers to the questions people (and AI assistants) ask most.

What is Trim Video?
The Trim Video tool cuts a clip out of a longer video — you give a start and end time and keep only that segment, processed locally with ffmpeg WebAssembly.
Why does Trim Video matter?
You get just the segment you asked for. In Fast copy mode the cut lands on the nearest keyframe — typically within a second or two of your requested time; Frame-exact lands exactly where you asked.
How is Trim Video calculated?
Fast copy mode copies the original frames bit-for-bit, cutting at the nearest keyframe — done in seconds with zero quality loss. Frame-exact mode re-encodes the segment with H.264, which is slower but cuts precisely on the frame you asked for.
What are common trim video mistakes?
Expecting Fast copy to cut mid-keyframe — if the exact frame matters, use Frame-exact.
When should you use the Trim Video?
Cutting an intro/outro, extracting a highlight for social media, shortening a screen recording before sharing, or isolating one scene from a long recording.

What is the Trim Video?

The Trim Video tool cuts a clip out of a longer video — you give a start and end time and keep only that segment, processed locally with ffmpeg WebAssembly.

How the Trim Video works

Fast copy mode copies the original frames bit-for-bit, cutting at the nearest keyframe — done in seconds with zero quality loss. Frame-exact mode re-encodes the segment with H.264, which is slower but cuts precisely on the frame you asked for.

  1. Choose a video file (up to 200 MB).
  2. Enter the start time — accepts 90, 1:30 or 0:01:30 formats.
  3. Enter the end time, or leave it empty to keep everything after the start.
  4. Pick Fast copy for speed and perfect quality, or Frame-exact when the precise frame matters.
  5. Click Trim Video and download the clip.

Key terms

keyframe:
A self-contained frame the video can start playing from. Copy-mode cuts must start on one; they usually occur every 1-2 seconds.
stream copy:
Copying compressed frames without re-encoding — instant and lossless, but constrained to keyframe boundaries.

Common mistakes to avoid

  • Expecting Fast copy to cut mid-keyframe — if the exact frame matters, use Frame-exact.
  • Entering times as 1.30 instead of 1:30.
  • Using Fast copy on AVI/WMV containers it can't rewrap — the tool will tell you to switch modes.
  • Trimming a trimmed file repeatedly in Frame-exact mode, losing a little quality each pass.

Keywords: trim video, cut video online, video trimmer, crop video length, shorten video.

Your video is processed entirely in your browser and never uploaded.

Reviewed by the Free Tools Galaxy editorial team · Updated June 2026 · Calculated privately in your browser.

Frequently asked questions

Is the Trim Video free to use?+

Yes. Every tool on Free Tools Galaxy is 100% free, runs in your browser and requires no signup.

How accurate is the Trim Video?+

Trim Video uses the standard trim video formula in double-precision arithmetic, so the same inputs always produce the same result and you can verify any figure by hand. It is an educational estimate — real-world outcomes depend on your actual rates, rules and assumptions.

Do you store my inputs?+

No. The Trim Video runs entirely in your browser. Nothing is uploaded or saved to a server.

Can I use the Trim Video on mobile?+

Yes — the interface is fully responsive and works on phones, tablets and desktops.

What are common mistakes to avoid?+

The most frequent mistake is mixing units. Double-check your inputs use a single, consistent unit before clicking Calculate.

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AI-style routing · 100% on-device

Based on this tool, your recent activity and how others chain tools together.

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Share-to-grow kit (Reddit, LinkedIn, Medium)
Reddit post
Title: I built/used this free trim video — instant, no signup

Body: Cut the part you want out of any video in your browser — fast copy or frame-exact, no upload. Try it: https://freetoolsgalaxy.com/tools/trim-video
LinkedIn post
Trim Video on Free Tools Galaxy — Cut the part you want out of any video in your browser — fast copy or frame-exact, no upload. https://freetoolsgalaxy.com/tools/trim-video
Medium intro
# Trim Video — the free tool I keep coming back to

Cut the part you want out of any video in your browser — fast copy or frame-exact, no upload.

Try it: https://freetoolsgalaxy.com/tools/trim-video
Quora answer
The fastest way is to use a free in-browser trim video: https://freetoolsgalaxy.com/tools/trim-video. Cut the part you want out of any video in your browser — fast copy or frame-exact, no upload.

Embed this tool anywhere

Free embed code for blogs, docs and dashboards. Every embed sends a backlink home — helping you and the galaxy grow together.

HTML iframe
Drop into any site — auto-resizes to its content height, theme-aware.
<iframe src="https://freetoolsgalaxy.com/tools/trim-video?embed=1" title="Trim Video" loading="lazy"
  style="width:100%;height:600px;border:0;border-radius:16px;background:#0b1020"
  allow="clipboard-write"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.type==="ftg-embed-height"){document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source){f.style.height=e.data.height+"px";}});}});</script>
<p><a href="https://freetoolsgalaxy.com/tools/trim-video" target="_blank" rel="noopener">Powered by Trim Video on Free Tools Galaxy</a></p>
Responsive wrapper
Aspect-locked container — good for blog post bodies.
<div style="position:relative;padding-bottom:75%;height:0;overflow:hidden;border-radius:16px">
  <iframe src="https://freetoolsgalaxy.com/tools/trim-video?embed=1" title="Trim Video" loading="lazy"
    style="position:absolute;inset:0;width:100%;height:100%;border:0" allow="clipboard-write"></iframe>
</div>
WordPress / Markdown
Paste in a custom-HTML block or markdown file.
[Trim Video — free online tool](https://freetoolsgalaxy.com/tools/trim-video)

<iframe src="https://freetoolsgalaxy.com/tools/trim-video?embed=1" width="100%" height="600" frameborder="0"></iframe>
Text link-back
Minimal credit link — best for sidebars and footers.
<a href="https://freetoolsgalaxy.com/tools/trim-video" target="_blank" rel="noopener">Try the free Trim Video</a>

Share-to-Grow Kit

Pre-written, ready-to-paste posts for every major channel. Help others discover this tool — and earn backlinks.

Title
I built a free trim video that works instantly in the browser — no signup, no ads in your face
Body
Hey r/[subreddit],

I kept needing a quick trim video and most options online were slow or behind paywalls, so I built one that:

• Runs 100% in your browser (your data never leaves your device)
• No signup, no email wall, no popups
• Loads in under a second on mobile

It covers the standard trim video use cases (trim video, cut video online, video trimmer, crop video length) and links out to the formula + worked examples if you want to learn the math.

Link: https://freetoolsgalaxy.com/tools/trim-video

Happy to take feedback — what's missing?
Post to a relevant subreddit (e.g. r/InternetIsBeautiful, r/webdev, r/productivity). Avoid spammy subs.
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