Video Speed Changer with Frame-Precise Control

A browser-based video speed editor with a 0.1x to 16x range, segment-based speed control, and 6 speed ramp presets. Change playback speed with pitch preservation — no watermarks.

How to Change Video Speed Online

1
Upload your video

Drag and drop or click to browse. Supports MP4, WebM, MKV, AVI, MOV, and more — up to 1 GB.

2
Choose a mode

Use Uniform to change the entire video speed, or Segments to set different speeds for each part.

3
Adjust speed settings

Use the slider, presets, or custom input. Configure audio handling and output format.

4
Process and download

Click Process Video and download the result. Preview the speed curve before processing.

Speed up, slow down, and apply speed ramps to your videos instantly

Upload video file
MP4, WEBM, MOV, MKV, AVI, WMV, FLV, 3GP
Upload a video to start
File:
Duration:
Size:
Resolution:
Video:
Audio:
▶ Previewing...
🔇 No audio track detected — Audio options are not available for this video.
1.0×
Custom:
0.1× 16×

Drag the slider or pick a preset. Below 1× is slower, above is faster. Then press Process.

Speed Ramp Presets:
Speed Curve
Segment speed: 1.0×
Processing cancelled. You can start again when ready.
Done!

Features

0.1x to 16x speed with 9 presets + segment-based editing for different parts
Use Uniform mode for the whole clip or Segments mode to give each region its own speed, set by slider, preset, or an exact typed value.
6 speed ramp presets: Slow-Mo Ramp, Bullet Time, Montage, and more transitions
One click splits the timeline into preset segments — Bullet Time, for example, drops to 0.1x in the middle with normal speed before and after.
Pitch preservation — natural audio at any speed, no chipmunk effect
Audio time-stretching keeps voices sounding natural when sped up or slowed down, or you can shift pitch, mute, or keep the original track.
Runs via FFmpeg WebAssembly in your browser
Process MP4, WebM, MKV, AVI, MOV, and more up to 1 GB locally, choosing High (CRF 17), Medium, or Smaller-file output quality.

FAQ

What speed range is supported?

The tool supports speeds from 0.1x (extreme slow motion) to 16x (fast timelapse). Use the logarithmic slider or type an exact value.

What is pitch preservation?

When enabled, audio pitch stays natural regardless of speed — no chipmunk effect at high speed or deep voice at low speed. This uses advanced audio time-stretching.

How do speed ramp presets work?

Presets split your video into segments with predefined speeds. For example, Bullet Time creates a dramatic slow-motion moment (0.1x) in the middle, with normal speed before and after.

Can I set different speeds for different parts?

Yes. Switch to Segments mode and use presets or manually split the video at any point. Each segment has its own speed control.

Does changing speed reduce video quality?

Video is re-encoded to apply speed changes, but you can choose the quality level. High quality (CRF 17) is visually indistinguishable from the original.

Can I reverse the video while changing speed?

Yes. Enable the Reverse toggle in Uniform mode, or reverse individual segments in Segments mode.

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Who is this tool for?
🎬 Video Creators
Published Updated Author: