Video Length Adjuster

Fit video to a target duration by changing speed (keeps full content)

Drag & drop video file here or click to browse

Target length

—
0%

Adjusting length...

Adjusted video

How it works

  1. Upload a video.
  2. Set a target duration (or pick a preset).
  3. Speed is calculated automatically: speed = original ÷ target.
  4. Click Adjust & Export — the full video is re-timed to that length.
  5. Download the result (WebM).

Note: Faster than ~2× or slower than ~0.5× may sound unnatural. Extreme rates can fail in some browsers.

Privacy: Everything stays in your browser. No upload.