Video Trim Tool

Cut a video down to the section you actually need. Re-encodes to a clean MP4 that plays everywhere.

Fully local processing — your file never leaves the browser

✂️

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). ~20× faster with no quality loss. Start/end snap to the nearest keyframe.
ON = H.264 re-encode for exact cuts, takes longer.

Processing… 0%

Range

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Length

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Size

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Download trimmed video

Popular uses

Cut unwanted sectionsShorten clips before sharingPre-process for size limits

Next tools

Video Compressor Video to GIF Converter Video Merger

What this tool does

Frame-accurate start / end input
Outputs MP4 (H.264 + AAC)
Files stay on-device

How to use

1
Pick a video
MP4 / MOV / MKV.
2
Set start / end
In seconds, with visual range preview.
3
Trim
Preview + download appear when done.

What each setting means

Start

First second to keep. Accepts HH:MM:SS too.

End

Last second to keep, must be after start.

Recommended settings

SNS intro clip

Start 0, end ≤30s

Matches TikTok / Reels common length.

Highlight reel chunk

+/- 1s buffer either side

Keeps titles / SFX intact.

Common pitfalls

Symptom: Cut starts in the wrong place

Cause: Keyframe alignment.

Fix: Try ±1s on the start, or accept slight drift.

Symptom: Audio missing

Cause: Source uses uncommon audio codec.

Fix: Convert to MP4 first, then trim.

Equivalent FFmpeg commands

Reference commands you can run on the desktop FFmpeg CLI.

Cut 5s–25s

ffmpeg -i input.mp4 -ss 5 -to 25 -c:v libx264 -crf 23 -preset fast -c:a aac -b:a 128k -movflags +faststart output.mp4

Stream-copy (fast, frame-imprecise)

ffmpeg -ss 5 -to 25 -i input.mp4 -c copy output.mp4

Browser support & limits

MP4 output only
Single range per run

Privacy

This tool runs ffmpeg.wasm directly in your browser. Files never leave your device — everything runs locally. Read the privacy policy →

Frequently asked questions

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

Not in this tool — we always re-encode for predictable output. Use FFmpeg -c copy on the desktop if you need that.

Can I cut multiple ranges?

Currently one range only. Run multiple trims and concat them in a separate tool.

Long videos?

Up to ~500MB input.