Web Dev Tools

Video Trimmer

Trim videos online for free. Cut MP4, AVI, MOV videos precisely. Easy video cutter and editor tool.

Use Video Trimmer to get instant results without uploads or sign-ups. Everything runs securely in your browser for fast, reliable output.

Your results will appear here.

Ready to run.

About this tool

Our Video Trimmer Calculator helps you trim videos by calculating the new file size and duration after cutting sections.

Video trimming removes unwanted parts from beginning, middle, or end of videos. Perfect for creating clips, removing ads, or shortening videos.

This tool helps estimate trimmed video specifications including file size, quality, and processing time.

Usage examples

Create Video Clip

Extract 30-second clip from movie

Input: 2-hour video → Trim to 30 seconds → Output: 15 MB clip

Remove Intro/Outro

Cut unwanted sections

Input: 10-minute video → Remove 2 minutes → Output: 8-minute video

How to use

  1. Upload your video file
  2. Set start and end points for trimming
  3. Preview the trimmed section
  4. Download the cut video

Benefits

  • Trim videos precisely
  • Cut MP4, AVI, MOV files
  • Remove unwanted sections
  • Create video clips
  • Maintain video quality
  • Fast processing
  • Frame-accurate cuts

FAQs

Will trimming reduce video quality?

If using same format and codec, quality is preserved. Re-encoding may slightly reduce quality depending on settings.

What video formats can I trim?

Most formats including MP4, AVI, MOV, MKV, WMV, FLV. MP4 (H.264) is most compatible and recommended.

How accurate is video trimming?

Modern trimmers are frame-accurate. Some formats require keyframe seeking which may be accurate to ~1-2 seconds.

What is the best format for trimmed videos?

MP4 (H.264) offers best compatibility across devices and platforms. MOV for Apple ecosystem. WebM for web use. AVI for editing. Use MP4 unless specific need. Maintains quality while keeping reasonable file size.

Does trimming reduce video quality?

No if you use "copy" mode (no re-encoding). Yes if re-encoding. Re-encoding applies compression, reducing quality. Use lossless formats (ProRes, FFV1) for editing, MP4 for final output. Trim before effects to preserve quality.

How do I trim without re-encoding?

Use tools with "stream copy" or "direct copy" mode. FFmpeg with -c copy flag. Only works at keyframes (I-frames), not exact frames. Fast processing, no quality loss, but limited precision. Re-encode for exact frame trimming.

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