What video formats are supported?

Video Trimmer supports MP4, WebM, and MOV formats. The output is always MP4 for maximum compatibility across devices and platforms.

Is there a file size limit?

You can trim videos up to 500MB. Because trimming uses stream copy, processing is very fast regardless of file size.

Does this tool upload my videos to a server?

No. All video processing happens entirely in your browser using FFmpeg WebAssembly. Your videos never leave your device, ensuring complete privacy.

How accurate is the trim point?

Trimming uses keyframe-based cutting for maximum speed. The actual cut point may shift slightly to the nearest keyframe in the video, which is typically within 1-2 seconds of your chosen time. For frame-exact cuts, the video would need to be re-encoded.

What social media formats can I trim for?

You can trim any video to the duration you need — 15 seconds for Instagram Stories, 60 seconds for TikTok, or any custom length. The trimmed output is MP4, compatible with all platforms.

Does trimming re-encode the video?

No, our trimmer uses stream copy (-c copy) by default, which cuts the video without re-encoding. This makes trimming extremely fast and preserves the original video and audio quality exactly.

Video Trimmer - Trim & Cut Videos Online Free

About Video Trimmer

Our free video trimmer lets you cut clips to any length with a visual timeline and frame-accurate preview. Using FFmpeg stream copy, trimming is near-instant with no quality loss — all processing happens entirely in your browser.

Features:

Trim videos by setting precise start and end times
Visual timeline with frame-accurate preview
Fast stream-copy cutting — no re-encoding, no quality loss
Supports MP4, WebM, and MOV video formats
All processing in your browser — videos never leave your device
Completely free with no signup, watermarks, or file limits

Video Trimmer

Trim & Cut Videos Online

About Video Trimmer

Features:

Standards & References

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