Video Trim Tool

Cut a video down to the part you need. By default it copies without re-encoding, so it is fast and the quality does not change. Switch to re-encoding when you need a frame-exact cut.

Your file is not uploaded

Drag & drop a video, or tap to select

MP4 / MOV / AVI / MKV / WebM · Up to 500 MB

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Trim range

0:00.00 — 0:00.00

Adjust start

Adjust end

Start (HH:MM:SS.ms)

End (HH:MM:SS.ms)

Frame-accurate mode (re-encode) OFF (default) = lossless mode (-c copy). No re-encoding, so it is fast and the quality does not change. The start can move back to the previous keyframe, which makes the clip a little longer; the end stays where you set it.
ON = re-encode to H.264. Cuts at the exact times, but takes longer.

Processing… 0%

Range

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Length

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Size

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Download trimmed video

Equivalent FFmpeg command

CLI command for your current settings. Updates live as you change controls.

ffmpeg -i input.mp4 -t 10.000 -c copy -avoid_negative_ts make_zero -movflags +faststart output.mp4

Popular uses

Cut unwanted sectionsShorten clips before sharingPre-process for size limits

Next tools

Video Compressor Video to GIF Converter Video Merger

How to use

Pick a videoMP4, MOV, MKV and so on, up to 500 MB.
Set start / endWatch the preview and set the range with the sliders, buttons or time boxes.
TrimFor an exact cut, turn on "Frame-accurate mode (re-encode)" first. When it finishes, a preview and a download button appear.

Recommended settings

SNS intro clip

Start 0, end ≤30s

Check the length limit in the destination's help pages.

Highlight reel chunk

+/- 1s buffer either side

Titles and sound effects are less likely to be cut off.

When it goes wrong

Cut starts in the wrong place

Cause: In lossless mode (the default), the start moves back to the previous keyframe.

Fix: Turn on "Frame-accurate mode (re-encode)" and trim again.

Audio missing

Cause: In lossless mode the audio keeps its original format. If the player does not support that format, there is no sound.

Fix: Turn on "Frame-accurate mode (re-encode)"; the audio then becomes AAC.

Questions

Can I copy-stream (no re-encode)?

Yes. The default lossless mode cuts without re-encoding (-c copy). It is fast and keeps the quality, but the start moves back to the previous keyframe. For an exact cut, turn on "Frame-accurate mode (re-encode)".

Can I cut multiple ranges?

One range per run. Cut each range separately, then join them with the Video Merger.

Long videos?

Input is limited to 500 MB. On phones, a memory warning appears above 200 MB.

More detail (settings, limits, FFmpeg commands)

What each setting means

Start

Where the part you keep begins. Type it as HH:MM:SS.ms (plain seconds also work).

End

Where the part you keep ends. It must be after the start.

Frame-accurate mode (re-encode)

Off (default) is lossless mode (-c copy): fast and no quality change, but the start moves back to the previous keyframe, so the clip can be a little longer. On re-encodes to H.264 (CRF 20) and AAC and cuts at the exact times.

Browsers and limits

MP4 output only (input up to 500 MB)
Single range per run

The same job with the FFmpeg command line

Cut 5s–25s exactly (frame-accurate mode)

ffmpeg -ss 5 -i input.mp4 -t 20 -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -c:v libx264 -crf 20 -preset fast -pix_fmt yuv420p -c:a aac -b:a 192k -movflags +faststart output.mp4

The same settings as the tool's frame-accurate mode. It re-encodes, so the clip starts at the time you set.

Stream-copy (lossless mode, fast)

ffmpeg -ss 5 -i input.mp4 -t 20 -c copy -avoid_negative_ts make_zero -movflags +faststart output.mp4

The same settings as the tool's default lossless mode. The clip starts at the previous keyframe, so it can be a little longer.