BYTETOOLS

Trim Video

Trim and cut video online for free. Set start and end times to keep just the part you want, right in your browser — nothing is uploaded.

Drop a video here or click to browseYour video is processed locally and never uploaded.

What is the Trim Video?

The ByteTools Trim Video tool cuts a clip down to just the section you want by setting a start and end time in seconds.

  • Cuts a clip using precise start and end seconds
  • Outputs a standard, compatible MP4
  • Great for highlights, intros and outros
  • Built-in preview before you download
  • 100% local — your video is never uploaded
  • Free, unlimited and works offline once loaded

How to use the Trim Video

  1. 1

    Drop a video onto the box or click to browse for one.

  2. 2

    Enter the start and end times in seconds.

  3. 3

    Click Trim video and wait for the in-browser engine to finish.

  4. 4

    Preview the trimmed clip, then download it.

About the Trim Video

The ByteTools Trim Video tool cuts a clip down to just the section you want by setting a start and end time in seconds. It is the fast way to remove dead air at the beginning, chop off an unwanted ending, or grab a single highlight from a longer recording.

You get a standard MP4 back, re-encoded with H.264 and AAC so the trimmed clip plays everywhere. It is ideal for trimming screen recordings, extracting a quote from an interview, or preparing a short clip for social media.

All processing happens locally in your browser with a WebAssembly build of ffmpeg. Your video is never uploaded — no server, no account and no limits — so your files stay private and the tool works offline once it has loaded.

Frequently asked questions

How do I trim a video online?

Drop your video onto the tool, enter the start and end times in seconds, then click Trim video. The engine keeps only that section and gives you a new MP4 to preview and download — all in your browser.

How do I find the exact start and end seconds?

Play the video in any player and note the timestamps where your desired section begins and ends, then enter those numbers. You can convert minutes to seconds (for example, 1:30 is 90 seconds) for the fields.

Does trimming reduce the video quality?

The clip is re-encoded at a high-quality default (CRF 23), so quality stays very close to the original. You get a clean MP4 of just the section you chose with negligible visible change.

Is my video uploaded to trim it?

No. The trimming runs entirely in your browser with WebAssembly, so your video is processed on your own device and never uploaded. Private footage stays on your machine.

Why is trimming slow for long videos?

The trimmed section is re-encoded using your own CPU rather than a server, so a short output is quick while a long selection takes more time. A modern desktop browser handles large files best.

Guides for Trim Video

Related tools