What is Video Trimmer?
Video Trimmer is a free online tool that lets you precisely cut and extract clips from any video — entirely in your browser without uploading files to any server. Whether you need to remove the beginning or end of a recording, extract a highlight clip from a longer video, cut out a specific scene, or create a short snippet for social media, our tool handles it instantly using FFmpeg WebAssembly.
Powered by FFmpeg compiled to WebAssembly, the same technology used in professional video editing applications is available directly in your browser. You can set precise start and end times to extract any segment of your video. The trimmed clip retains the original video quality, codec, and audio track — nothing is re-encoded unless required for accuracy.
Output is saved as a standard MP4 file, universally compatible with iOS, Android, Windows, macOS, and all social media platforms. After trimming, you may want to compress the trimmed clip for smaller file size, convert it to a GIF, or extract its audio track.
Key Features
FFmpeg WebAssembly
Professional-grade video trimming runs directly in your browser.
Precise Time Selection
Set exact start/end times with second-level precision.
No Re-encoding
Stream copy mode preserves original quality without re-encoding.
Audio Preserved
Trimmed clips retain original synchronized audio tracks.
Browser-Based
No server upload — all processing is private and local.
Universal MP4 Output
Compatible with all devices and social media platforms.
How It Works
- 1
Upload Video
Click the upload area or drag and drop your video file (MP4, WebM, MOV, AVI, or MKV).
- 2
Set Start & End Points
Use the timeline or input the exact start and end times to define your clip.
- 3
Trim
Click "Trim". FFmpeg processes the video entirely in your browser — no upload needed.
- 4
Download
Download the trimmed video clip to your device.
Common Use Cases
- ▸Cutting unwanted intros and outros from recorded meetings
- ▸Extracting highlight clips from long sports or event recordings
- ▸Creating short snippets from lectures or tutorials for sharing
- ▸Trimming social media videos to meet platform time limits
- ▸Removing sensitive portions from screen recordings before sharing
- ▸Creating preview clips or trailers from longer video content
- ▸Extracting specific scenes for video editing projects
Supported Formats
Privacy & Security
All video processing happens locally in your browser using FFmpeg WebAssembly. Your video files are never uploaded to any server. The entire trimming operation occurs on your device, ensuring complete privacy.
💡 Pro Tips
- ▸Use the video preview to precisely identify your start and end points before trimming.
- ▸For longer videos, allow extra time for FFmpeg to process — CPU-intensive on large files.
- ▸Compress the trimmed video afterwards if you need a smaller file for sharing.
- ▸Close other browser tabs before processing large videos to free up memory.
- ▸For very precise cuts, enter the exact timestamp in hours:minutes:seconds format.
Frequently Asked Questions
Frequently asked questions about Video Trimmer.
Our trimmer uses FFmpeg WebAssembly to cut your video precisely. Depending on the settings, it may use stream copy (no re-encoding) or re-encode only when necessary for accuracy.
Supported input formats include MP4, WebM, MOV, AVI, and MKV. Output is typically in MP4 (H.264) format for universal compatibility.
Trimming precision depends on the video's keyframe structure. Frame-accurate cuts are available, though some codecs may trim to the nearest keyframe for maximum speed.
No server-imposed limits. Practical limits depend on your device's RAM. Most devices handle videos up to 1-2GB comfortably.
No. All video processing happens in your browser using FFmpeg WebAssembly. Your files never leave your device.
Yes! Use the start and end time selectors to define any segment of your video. Only that segment will be extracted and downloaded.
Yes. The trimmed video retains its original audio track, perfectly synchronized with the video.