Speed Up Video

About Speed Up Video

This free tool speeds up a video. Choose 1.25x, 1.5x, 2x, 3x or 4x, or type any speed up to 10x. The preview plays at that speed, and the page shows the new length before you start. Then press Speed up the video and download the MP4.

When you keep the sound, the voice is sped up without the chipmunk effect: the pitch is corrected, so people sound fast but normal. For a time-lapse, remove the sound.

Everything runs in your browser. Your video is never uploaded, and there is no watermark.

Features

• 1.25x to 4x presets, plus any custom speed up to 10x
• Normal-pitch voice — no chipmunk sound — or no sound at all
• Live preview at the chosen speed (up to 4x in the browser)
• New length shown as you change the speed
• MP4, MOV, WebM, MKV in — MP4 out (H.264 and AAC)
• Private — no upload, no sign-up, no watermark

How long the video will be

The new length is the old length divided by the speed. 2x is half as long; 4x is a quarter.

Need a fixed length, for example a 60-second clip from a 3-minute video? Divide: 180 ÷ 60 = 3x. Type that number in the custom box.

Which speed for which video?

• 1.25x – 1.5x — talks, lessons and vlogs. People still sound natural, and the video is 20–33% shorter.
• 2x — screen recordings, tutorials, unboxing. Speech is fast but you can still follow it.
• 3x – 4x — cooking, crafts, cleaning, building. Speech is hard to follow here; music works better.
• 5x – 10x — a time-lapse feel: clouds, traffic, a long drive, a drawing from start to end. Remove the sound.

For a real time-lapse of hours (a sunset, a plant growing), a camera's time-lapse mode is better: speeding up a long video still needs the whole long file.

Sound when you speed up

• Keep the sound — the sound is made shorter to match the picture, and the pitch is corrected. At 2x a voice sounds like a podcast played fast.
• Remove the sound — best for time-lapses and for clips where you will add music later with Add Music to Video.

Frequently asked questions

How do I speed up a video?

Drop the video on the box, choose 2x (or another speed), check the preview, and press Speed up the video. When it is ready, play it and press Download. The first time, the page also loads its video engine (about 30 MB).

Will the voice sound like a chipmunk?

No. The tool keeps the pitch of the sound, so a voice at 2x sounds fast but normal. Only the speed changes.

Can I speed up a video more than 4x?

Yes. Type up to 10 in the custom box. The browser preview stops at 4x, but the saved file uses the speed you typed.

Does speeding up make the file smaller?

Usually yes, because the video is shorter. A 10-minute video at 2x becomes a 5-minute file. To make it fit an exact size, use Compress Video to Size after this.

Can I speed up only part of a video?

The whole file is sped up. Cut the slow part out first with Trim Video, speed it up here, then join the pieces with Merge Video.

Is my video uploaded?

No. The video is processed inside your browser with ffmpeg. It never leaves your device.

Related tools

• Slow Motion Video Maker — the other way: 0.5x or 0.25x
• Change Video Speed — every speed from 0.25x to 4x on one page
• Trim Video — cut away the parts nobody needs to see
• Sped Up Audio — the sped up (nightcore) sound for songs
• Screen Recorder — record your screen, then speed it up here

How to use it

• Drop your video on the box, or click to choose a file
• Pick a speed — 1.25x to 4x — or type your own up to 10x
• Watch the preview and check the new length
• Choose to keep or remove the sound
• Press Speed up the video, wait, then Download