Upload your video
Choose an MP4, MOV, WebM, or another supported video file from your device.
Free online video speed changer
Change Video Speed Online
Speed up or slow down your video online. Choose a playback speed from 0.25x to 4x, preview the result, and export your video without installing software.
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
Make videos faster
Speed Up Video Online
Use this speed up video online tool to make a video faster without installing editing software. Upload a clip, select 1.25x, 1.5x, 2x, 3x or 4x, preview the faster playback, and export the result as an MP4. It is useful when you want to increase video speed for tutorials, demos, lectures, screen recordings, or short social clips.
Make videos slower
Slow Down a Video Online
Slow down video clips with 0.75x, 0.5x or 0.25x speed. The tool can decrease video speed and make video slower for reviewing movement, stretching a short moment, or creating a calmer version of a clip.
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
How to Change Video Speed
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.
Change MP4 Video Speed
Change MP4 speed directly in your browser. You can speed up MP4 videos for quick playback, slow down MP4 clips for review, or use a custom value when you need a precise video speed changer instead of only a 2x button. To repeat a finished clip, send it through the video looper.
Speed guide
Choose the Right Video Speed
Small speed changes are usually better when the video includes speech. Stronger speed changes work best for silent clips, timelapses, demos, or videos where you only need to scan the visual content.
Very slow review
Use for checking fast movement frame by frame, such as sports clips or product motion.
Slow playback
Good for tutorials, demonstrations, dance steps, gestures, and moments that need a closer look.
Light slow down
Useful when a clip feels a little too fast but still needs to sound and feel natural.
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.
Quick scan
Helpful for timelapses, silent clips, and fast previews where audio is less important.
Audio Options for Speed Changes
Keep Audio is enabled by default so the exported video keeps sound in sync with the new speed. Preserve audio pitch helps voices stay closer to their original tone, which is usually better for talking videos, lectures, tutorials, interviews, and screen recordings.
If you are making a silent visual clip, social background video, or fast scan preview, you can turn audio off before export. For extreme changes like 0.25x or 4x, removing audio can sometimes produce a cleaner result.
Formats, Privacy, and File Size
The video speed changer accepts common video formats such as MP4, MOV and WebM, then exports an MP4 file. Your video is processed in your browser, so there is no upload queue and the file does not need to leave your device. If the audio is still too quiet after changing speed, use the video volume booster.
Larger videos may take longer to export, especially on older devices. For the smoothest experience, keep this tab open while exporting and use shorter clips when you only need to change the speed of one section.
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
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?
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.
Can I change video speed without changing the 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.
Can I speed up an MP4 video?
Yes. You can speed up MP4 videos online, and the tool also supports common formats such as MOV and WebM.
What video formats are supported?
The tool accepts common video files including MP4, MOV and WebM, then exports the result as an MP4.
What 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 affect 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.
Are my videos uploaded to a server?
No. Your video is processed in your browser, so it stays on your device.