Free online video speed changer

Change Video Speed Online

Use our free online video speed changer to speed up or slow down videos from 0.25x to 4x. Preview the new duration, keep or remove audio, and export directly in your browser.

Private video speed changer

Drop a video here to change its speed

Supports MP4, WebM, MOV and other common video files. Your file stays on your device while you edit.

No upload to server · No watermark

How to Change Video Speed Online

Upload your video

Choose an MP4, MOV, WebM, or another supported video file from your device.

Choose a speed

Select a preset from 0.25x to 4x, or enter a custom speed such as 1.35x.

Export the video

Preview the new duration, keep or remove audio, then download the exported MP4.

Make videos faster

Speed Up Video Online

Speed up video online without installing editing software. Upload your video and choose 1.25x, 1.5x, 2x, 3x, or 4x speed. Preview the faster video and export the result as an MP4.

Use 1.25x or 1.5x for natural playback, 2x for lectures and tutorials, or 3x–4x for fast previews and timelapse-style clips.

Make videos slower

Slow Down Video Online

Slow down video online to 0.75x, 0.5x, or 0.25x for tutorials, demonstrations, movement review, sports clips, or any moment you want to examine more closely.

This is a straightforward slow video online editor. It changes playback speed; it does not add AI slow motion or frame interpolation. If you also need a tighter frame, use the online video cropper before changing speed.

Original duration10:00

0.5x20:00

1.5x06:40

2x05:00

4x02:30

Speed Up or Slow Down MP4 Videos

Speed up MP4 videos online by choosing 1.25x, 1.5x, 2x, 3x, or 4x playback speed. You can also slow down an MP4 to 0.75x, 0.5x, or 0.25x. Preview the new duration before exporting the updated MP4.

This MP4 video speed changer also supports common files like MOV and WebM, then exports an MP4. To repeat a finished clip, send it through the video looper.

Speed guide

Video Speed Changer – Choose Any Speed from 0.25x to 4x

Choose a preset or enter a custom value when you need more control than a simple 2x video speed button. Small speed changes are usually better for speech, while stronger changes work best for silent clips, timelapses, demos, and quick visual scans.

0.25x

Very slow review

Use for checking fast movement frame by frame, such as sports clips or product motion.

0.5x

Slow playback

Good for tutorials, demonstrations, dance steps, gestures, and moments that need a closer look.

0.75x

Light slow down

Useful when a clip feels a little too fast but still needs to sound and feel natural.

1.25x / 1.5x

Natural speed up

Best for lectures, talking-head videos, walkthroughs, and screen recordings.

Fast review

Use when you want to shorten long explanations, demos, or training videos.

3x / 4x

Quick scan

Helpful for timelapses, silent clips, and fast previews where audio is less important.

Change Video Speed Without Changing Audio Pitch

Keep audio enabled when you want sound to stay in the exported video. Turn on Preserve audio pitch to keep voices closer to their original tone when speeding up or slowing down playback.

You can also remove audio completely before export. For a dedicated mute workflow, use Remove Audio from Video.

Change Video Speed Privately in Your Browser

Videos are processed locally in your browser, so your file does not need to be uploaded to an editing server. Choose a playback speed, preview the result, and export directly on your device.

Longer and high-resolution videos may take more time and memory to process. For the smoothest experience, keep this tab open while exporting and trim the video first when you only need to change the speed of one section. If the audio is still too quiet after changing speed, use the video volume booster.

Why Use Our Video Speed Changer

New duration preview

See the output duration immediately as you change speed.

0.25x to 4x

Use common presets or enter a precise custom speed.

Audio controls

Keep audio on, remove it, or preserve audio pitch by default.

Private processing

Videos are processed locally in your browser without an upload queue.

Frequently Asked Questions

How do I change video speed online?

Upload your video, choose a speed from 0.25x to 4x, preview the new duration, then export the changed video as an MP4 in your browser.

Can I speed up a video online for free?

Yes. Upload a video, choose a faster speed such as 1.25x, 1.5x, 2x, 3x or 4x, preview it, and export the faster video in your browser.

How do I slow down a video online?

Upload your video and choose 0.75x, 0.5x or 0.25x. The tool shows the new duration before export so you can check how much slower the video will become.

How do I speed up an MP4 video?

Upload the MP4 file and select 1.25x, 1.5x, 2x, 3x or 4x playback speed. You can preview the faster duration before exporting the updated MP4.

Can I change video speed without changing audio pitch?

Yes. Keep Audio and Preserve audio pitch are enabled by default, so voices stay closer to their original tone while the video speed changes.

What video speed should I choose?

Use 1.25x or 1.5x for natural speed changes, 2x for tutorials and lectures, 3x or 4x for quick scanning, and 0.5x or 0.25x when you need to slow down details.

Will changing video speed reduce quality?

The exported video may look slightly different because it is saved as a new MP4 file. Starting with a high-quality source gives the cleanest result.