Video tool · 100% free

Change Video Speed

Speed up or slow down video while adjusting audio tempo to remain synchronized with the modified playback rate.

Built for: change video speed

Deleted as soon as you download itFree · fair-use only

Drop video files hereMP4 output · up to 100 files

Speed ×100

Included in this tool

0.25× to 4× speedSynchronized audioVideo timing adjustmentBatch processing

What this tool includes

Everything you need, without a paywall.

0.25× to 4× speed

Synchronized audio

Video timing adjustment

Batch processing

This tool is free, needs no account, and adds no watermark to your result. Text operations run on your device where the browser can do the work safely; file conversions run on the server and your upload is deleted as soon as your download finishes.