Video Trimmer

Cut and trim videos to the exact length you need

Video Trimmer

Instant Preview Supports MP4, MOV, MKV

Cut videos to the perfect length for social media, presentations, or personal use. Set precise start and end points to extract exactly the clip you need. Perfect for creating TikTok videos, Instagram Reels, YouTube Shorts, or removing unwanted intros and outros. Uses stream copy technology when possible for instant, lossless trimming. All processing happens locally in your browser—your videos stay private on your device and never touch a server. Supports MP4, MOV, WebM, AVI, and most modern video formats. No registration, no watermarks, and no file size limits.

Video trimming is the process of selecting a specific segment of a video file and removing the unwanted parts at the beginning or end. Unlike 'cropping' (which changes the frame size), trimming changes the duration of the video. Our tool uses FFmpeg WebAssembly to perform 'Stream Copying.' This is a high-performance method that cuts the video at the closest 'I-frame' (keyframe), allowing you to shorten a video without re-encoding. This means the output quality is identical to the source, and the process is nearly instantaneous because it doesn't require a heavy rendering phase.

Social Media Content Optimization

Quickly trim your 4K videos to fit specific platform requirements: under 60 seconds for YouTube Shorts, 90 seconds for Reels, or 10 minutes for TikTok. Perfect for capturing just the 'viral' moment.

Removing Intros and Outros

Clean up recordings by cutting out the 'dead air' at the start or end of a Zoom meeting, tutorial, or screen recording before sharing it with your team.

Highlight Extraction

Extract a 30-second highlight from a 2-hour gaming session or family event. Trimming makes it easier to share clips via messaging apps like WhatsApp or Telegram which have strict file size limits.

Teaser and Trailer Creation

Create short promotional teasers from longer webinars or presentations to drive traffic to the full-length content.

Our trimmer operates using two modes. The primary mode is 'Fast Cut' (Stream Copy), which uses the command '-c copy'. This avoids the heavy CPU load of re-encoding every frame, preserving the original bitrate and resolution perfectly. (1) You select the start and end timestamps. (2) The browser-based FFmpeg engine seeks the nearest keyframes. (3) The data packets are sliced and repacked into a new container. Because this happens client-side, your bandwidth is only used to load the page, not to transfer large video files to a server.

Platform	Max Duration	Aspect Ratio	Format
YouTube Shorts	60 Seconds	9:16 (Vertical)	MP4
Instagram Reels	90 Seconds	9:16 (Vertical)	MP4
TikTok	10 Minutes	9:16 (Vertical)	MP4/WebM
Twitter (X)	140 Seconds	Any	MP4/MOV

Optimized for Chrome, Firefox, and Edge. For 4K video trimming, we recommend using a device with at least 8GB of RAM, as the browser must keep parts of the video stream in memory. Safari users can trim MP4 and MOV files, though 'Stream Copy' speed may vary based on OS version.

Frequently Asked Questions

Will trimming reduce video quality?

When possible, we use 'stream copy' mode which extracts the video segment without re-encoding, preserving 100% original quality. This is also much faster than re-encoding. Re-encoding only occurs when necessary for format compatibility.

What's the maximum video length I can trim?

There's no length limit, but very long videos (2+ hours) may be slow to process and could exceed browser memory on some devices. For best results, keep source videos under 1GB.

Is my video data secure?

Yes. Your video is never uploaded to any server. All the cutting and saving happens inside your browser's local sandbox. This is the ultimate privacy solution for sensitive video content.

Why is the output slightly off from my timestamp?

In 'Stream Copy' (Fast) mode, the cut happens at the nearest 'Keyframe' (I-frame) to ensure the video doesn't become corrupted. This usually results in a difference of only a fraction of a second.