Trim Video
Trim and cut video clips online for free. Slice MP4, MOV, and WebM videos with lossless stream copy and zero quality loss directly in your browser with zero server uploads.
Choose a Video to Trim
Drag & drop MP4, MOV, WebM, AVI, or MKV files or click to browse
Lossless Stream Copy • Instant Processing • No Upload Limits
Lossless Zero-Degradation
Direct stream copy slices the video container without re-encoding pixels or compressing audio, guaranteeing 100% original quality.
100% In-Browser Privacy
Your private family recordings and proprietary corporate videos remain strictly offline within your browser's WebAssembly sandbox.
Sub-Second Export Speed
Without lengthy rendering queues or server upload lags, trim clips of any duration in mere seconds right on your CPU.
No Limits, No Watermarks
Trim as many video clips as you want without registration, branded corner stamps, or forced premium subscriptions.
How to Trim and Cut Video Files Online for Free
Extract specific scenes and highlights in three quick steps:
Select Your Video
Drag your MP4, MOV, WebM, or AVI file into the workspace. The integrated video player will load the timeline immediately.
Set Start and End Times
Play the clip to your desired scene and click "Set Here" to capture the start and end timestamps down to the millisecond.
Trim & Download
Click "Trim & Cut Video Now" to execute the instant lossless stream slice and download your clean video highlight.
Video Trimming Methods & Efficiency Comparison
Understanding lossless container stream copy versus full re-encoding:
| Trimming Mode | Processing Speed | Visual Quality | Best Use Case |
|---|---|---|---|
| Stream Copy (`-c copy`) | Instant (< 3 seconds) | 100% Original Lossless | Quick highlights, social media cuts, YouTube chapters |
| Accurate Frame Re-encode | Moderate (Transcode) | Visually Lossless (CRF 18) | Sub-frame micro-edits between keyframe intervals |
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Frequently Asked Questions
How does lossless stream copy trim videos without re-encoding?
Stream copy (`-c copy`) works at the container level by slicing data packets without decoding or re-compressing individual video frames or audio tracks. Because no rendering is required, your video is cut instantaneously with zero generational loss and 100% bit-for-bit fidelity.
What is the difference between Fast Stream Copy and Accurate Frame Re-encode?
Fast Stream Copy slices your video along the nearest keyframe (I-frame), completing in 1 to 3 seconds with zero quality degradation. If you require frame-accurate precision down to an exact millisecond between keyframe intervals, select 'Accurate Frame Re-encode' to transcode the boundary frames seamlessly.
Are my confidential video files uploaded to any external server?
No. Video playback, timestamp extraction, and FFmpeg slicing take place 100% inside your web browser's local sandbox memory using WebAssembly. Your recordings and sensitive camera files are never transmitted to any external server or saved in the cloud.
Can I trim large 4K or high-bitrate video recordings?
Yes. Because stream copy does not transcode every pixel, trimming massive multi-gigabyte 4K or 1080p60 files consumes minimal memory and finishes in seconds on modern laptops, desktops, and mobile devices.
Are there any watermarks, clip duration restrictions, or paywalls?
No. Agenda Creativa never adds watermarks to your trimmed videos, limits the number of cuts you can perform, or requires account creation. You enjoy completely free, unrestricted video trimming.