● Video speed changer

Change a video’s speed, keep it in sync

Make a clip faster for a sped-up edit or slower for slow motion. The picture and the sound move together, and you choose whether the pitch follows like a tape or stays where it is: 1.25× nightcore, 0.85× slowed, or any speed in between.

Free, no sign-up Nothing is uploaded MP4 · MOV · WebM

Drop your video here

MP4, MOV or WebM from your phone or computer · stays on your device

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How to

Video speed changer: three steps.

  1. Open your video

    MP4, MOV or WebM. It opens in your browser.

  2. Set the speed

    Drag Speed from 0.5× to 1.5× or tap a quick speed. Choose Keep pitch for natural voices.

  3. Export

    Export a 1080p MP4 in 9:16, 1:1 or 16:9, with the picture and sound in sync.

In depth

Video speed changer: the details.

Written and tested by , who builds Slowed Room. Last reviewed October 28, 2026.

Speeding up and slowing down, properly

Changing a video’s speed is easy; keeping it pleasant to listen to is the hard part. At 1.25× in Tape mode, voices rise almost four semitones — great for nightcore edits, odd for a tutorial. In Keep pitch mode the studio’s pitch engine holds the original key while the tempo changes, so speech at 1.25× still sounds like the same person, just faster.

Which mode for which video

VideoSpeedMode
Sped-up music edit1.15–1.25×Tape
Tutorial or talking head1.1–1.5×Keep pitch
Slowed + reverb edit0.8–0.9×Tape
Dance practice0.7–0.85×Keep pitch
Timelapse feel1.5×Keep pitch, or replace the audio

Limits and quality

  • The speed range is 0.5× to 1.5×. For larger changes, export once and process the result again.
  • Keep-pitch processing is most natural within about ±25%; beyond that voices start to sound processed.
  • Exports are 1080p H.264 MP4 at 30 or 60 fps, in 9:16, 4:5, 1:1 or 16:9.

One-click starting points

Popular speeds

Each link opens the studio with these exact settings. Drop your song in and adjust from there.

Recipe

Sped up

A little faster and brighter, the TikTok sped-up sound.

Recipe

Nightcore

Faster with the pitch rising, like the classic edits.

Recipe

Slowed

85% speed with a warm reverb.

Recipe

Ultra slowed

72% speed for a dreamy slow-motion feel.

Also in the studio

The sound, shaped first.

Before you render, make the audio yours: speed and pitch, five reverb spaces, bass, 8D, rain, echo, lo-fi textures and fades — all live, all on your device.

  • Presets: Slowed + Reverb, Nightcore, Phonk, Lo-fi, 8D, Rain and more
  • Tempo and key detection, hold-to-compare with the original
  • “Find the hook” for 15, 30 or 60-second clips
Vinyl SessionUse →
Midnight RainUse →

FAQ

Questions about the video speed changer.

How do I speed up a video with its sound?

Open the video, raise Speed and keep “Match the audio” on in the Clip tab. The footage and sound speed up together.

Will voices sound like chipmunks when I speed up?

In Tape mode, faster also means higher. Switch to Keep pitch and voices keep their natural tone at any speed.

Can I change the speed of just one part?

Trim to the part you want on the waveform, then export: only that part is rendered, at the new speed.

Which browsers can export the video?

Current Chrome, Edge, Safari 17+ and Firefox 130+, on desktop and on phones.

Related tools

Slowed + reverb generator

The classic, in real time

Slow down a video

Slow-mo with the sound

Slowed + reverb video editor

Effects on your own clip

Speed changer

Tempo with or without pitch

Ready when you are.

Open studio