Speed up or slow down a video
To speed up a video, drop it into the tool below, pick a speed from 0.25x to 3x and press the button. The work happens in your browser, so your file never leaves your device. It is free and needs no account or extension. It works best in Chrome or Edge on a computer.
Your file never leaves your deviceBy Chris, Screencap Team · Updated 24 October 2026
Speed Up Your Video
Drag and drop your video file here
or click to browse (max 500MB)
This tool works entirely in your browser. Your videos are never uploaded to any server.
Powered by modern browser APIs like MediaRecorder and Canvas for efficient video processing.
What this video speed changer does
What you can set, what you get back, and the size limit.
1
Nothing to upload
The video is played and re-encoded in your browser, so it stays on your computer.
2
7 speeds
0.25x, 0.5x, 0.75x, 1.25x, 1.5x, 2x and 3x, for slowing down and speeding up.
3
Resolution kept
Your video keeps its size and is re-encoded at about 5 Mbps, usually with its sound.
4
Up to 500 MB
Drop in a video of up to 500 MB. Free, with no account.
How do I speed up a video?
You can speed up a video in three steps, with nothing to install.
- Drop your video onto the tool above, or click to browse (up to 500 MB).
- Choose a speed of 1.25x, 1.5x, 2x or 3x.
- Press Speed Up Video, wait for it to finish, then preview and download the new file.
The resolution stays as it was. You get an MP4 or a WebM file, depending on your browser and the video you start with. This changes the file itself, so the new speed holds wherever you send it.
How do I slow a video down?
Slowing a video down works the same way. Pick 0.75x, 0.5x or 0.25x instead.
At 0.25x a video lasts four times as long, so a 30 second clip becomes two minutes. Slowing down does not create new frames, so fast movement can look jerky at 0.25x.
Which speed should I pick?
Choose by how much time you want to save, or how closely you want to look.
- 1.25x or 1.5x for talks and tutorials. You save a fifth to a third of the time and speech stays easy to follow.
- 2x for a long screen recording where little happens.
- 3x for skimming, or a time-lapse feel.
- 0.5x or 0.25x for checking a movement, a bug or a tricky step.
How do I speed up or slow down a video on iPhone?
On an iPhone, Apple's free iMovie app can do both: select the clip in your project and drag its speed slider, as Apple's iMovie guide shows. The Photos app can change which part of a Slo-mo video plays slowly, and from iOS 18 it can slow down videos recorded at more than 30 fps (Apple's guide to editing videos).
This tool is built for a computer browser. To use it on a phone video, move the file to your computer first.
Does it keep the sound?
Usually, yes. The sound plays through with the picture at the new speed and is recorded into the new file.
A few browsers cannot save sound in the format they pick, so play the result before you download it.
Why does it take as long as the video?
The tool plays your video through in real time and records it at the new speed, about 5 Mbps, so the wait is roughly the length of the finished video.
A 10 minute video at 2x takes about 5 minutes. At 0.5x the same video takes about 20. Keep the tab open while it works, and trim long videos first if you only need a part.
Is it safe to change video speed here?
Yes. Your video is played and recorded again inside this browser tab, and it is never sent to Screencap or to anyone else.
That suits recordings of meetings, lessons or anything with faces in it. Many online video editors upload your file to their servers first, so check before you hand one a private clip.
Frequently asked questions
Is there a free way to speed up a video online?
Yes. This video speed changer is free, needs no account and works on the file right there in your browser. Pick a speed from 0.25x to 3x, press the button and download the result.
Which speeds can I choose?
0.25x, 0.5x, 0.75x, 1.25x, 1.5x, 2x and 3x. For another speed, run the result through a second time: 1.5x twice gives 2.25x. Each pass re-encodes the video, so expect a little softening.
How long does it take?
About as long as the new video lasts. The browser plays your video through and records it as it goes, so a 10 minute video at 2x takes about 5 minutes, and at 0.5x about 20 minutes.
Does the video quality change?
The resolution stays the same. The video is re-encoded at about 5 Mbps, so a very high-bitrate source, such as 4K camera footage, can lose some detail.
What is the biggest video I can use?
500 MB. For the most reliable results, use Chrome or Edge on a computer, and keep the tab open until it finishes.
More free video tools
- MOV to MP4 Turn a QuickTime or iPhone MOV into an MP4.
- MP4 to GIF Turn a short clip into an animated GIF.
- All free tools Small video helpers that run in your browser.
Recording a walkthrough?
Record it with Screencap instead. In the Mac app's Instant mode the share link is ready the moment you stop, and it plays in any browser. On Windows or Linux, record in Chrome or Edge.