change video speed

Fast-forward your MP4 videos easily. Change video speed locally in your browser without uploading.

Drag & drop video or Browse Files

change video speed

Speed Factor

Change video playback speed without distorting audio pitch.

1.5x

How to Adjust Video Speed

1

Import Video

Select any MP4, WebM, or MOV file from your device.

2

Set Speed Factor

Use the slider to set a speed between 0.5x (slow motion) and 2.0x (fast forward).

3

Export Video

Click process to apply the changes and download the new video instantly.

Local Processing

Process Videos Anywhere

No internet connection needed after the first load. Change video speeds even while completely offline.

Complete Privacy Protection

Your video content is never uploaded to any remote server. The entire speed adjustment process happens securely within your browser sandbox, keeping your media 100% private.

Lightning Fast

Precision Control Without Distortion

Adjusting video speed usually breaks the audio pitch. We use advanced FFmpeg atempo filters to preserve the natural sound of your audio track even at 2x speeds.

Time Manipulation
Pitch Correction
Fast Export

Frequently Asked Questions

Q: Will speeding up the video reduce its size?

A: Yes, generally a shorter video with the same bitrate will have a smaller file size.

Q: Does it affect video quality?

A: No, the visual quality remains the same, just the playback speed changes.

Q: Is it secure?

A: Yes, all processing is done locally using WebAssembly.