Ijharul Islam
To speed up a video, open it in a tool with a speed setting, choose a speed such as 1.5× or 2×, check that voices still sound natural, and save a new copy. QuickVeed's free Video Speed Changer does this in your browser from 0.25× to 4× without uploading the file; Google Photos and FFmpeg are other free options.
This guide covers each method, how to work out the new length, how to keep speech from sounding like a cartoon, and when cutting pauses works better than speeding up.
The short answer
To speed up a video for free, open it in QuickVeed's Video Speed Changer, pick 1.25×, 1.5×, 2×, 3× or 4×, preview it and click Save at this speed. On Android, Google Photos offers 2× and 4×. With FFmpeg, run ffmpeg -i in.mp4 -filter:v setpts=0.5*PTS -filter:a atempo=2 out.mp4 for 2×. The new length is the old length divided by the speed.
Key takeaways
- New length = original length ÷ speed. A 10-minute video at 1.5× runs 6 minutes 40 seconds.
- Keep voice pitch on, or voices sound high and squeaky above about 1.25×.
- For talking videos, 1.1×-1.3× often sounds natural; 2× and above suit timelapses and screen recordings.
- Cutting silences and filler words can shorten a talk more naturally than speeding the whole thing up.
Disclosure: we make QuickVeed and show how to do this in it, along with other ways. Details about other products come from their public pages, checked in October 2026 and linked at the end.
How much shorter will the video be
The speed factor divides the length. Here's a quick table:
| Original length | 1.25× | 1.5× | 2× | 4× |
|---|---|---|---|---|
| 1 minute | 48 s | 40 s | 30 s | 15 s |
| 3 minutes | 2:24 | 2:00 | 1:30 | 0:45 |
| 10 minutes | 8:00 | 6:40 | 5:00 | 2:30 |
| 30 minutes | 24:00 | 20:00 | 15:00 | 7:30 |
This is handy for platform limits. A 4-minute screen recording at 1.5× comes in at 2:40, under the 3-minute limit for YouTube Shorts and TikTok posts (see YouTube Shorts size and length and TikTok video size). For any other figure, the free video duration calculator adds up clip lengths and shows watch time at faster speeds.
Going the other way, slowing a video down multiplies its length: a 30-second clip at 0.5× runs a full minute, and at 0.25× runs two. Keep that in mind for platform limits too, because a slow-motion cut of a long clip can push it past 3 minutes.
Method 1: Speed up a video in your browser
QuickVeed's free Video Speed Changer is free, runs in your browser, nothing is uploaded and no sign-up is needed, with no watermark.
- Open the tool and drop an MP4 or WebM file, up to 500 MB.
- Pick a speed: 0.25×, 0.5× or 0.75× to slow down, or 1.25×, 1.5×, 2×, 3× or 4× to speed up.
- Press play to preview it. Leave Keep voice pitch ticked so voices sound normal, or untick it for the chipmunk effect.
- Check the new length and the recording time the tool shows, then click Save at this speed.
- Download the new video. The sped-up or slowed result can be up to 20 minutes long.
The browser plays the video once and records the result, so saving takes as long as the video (for a speed change, as long as the new video). Keep the tab open and in front while it runs. The file is MP4 when your browser can record MP4 and WebM otherwise, and the tool tells you which before you start. Videos larger than 1920 px on the long side are scaled down to that size, and the result is re-encoded, so it isn't bit-for-bit identical to the original. A 2× export of a 4-minute video takes about 2 minutes. Output is up to 30 frames per second, and some browsers mute the sound at extreme speeds.
Preview at least a few seconds of speech before saving. If voices sound rushed at 1.5×, step down to 1.25×; the difference in length is small but the difference in clarity is large. For a 2-minute clip, 1.5× saves 40 seconds and 1.25× saves 24.
Method 2: On a phone
Android (Google Photos)
Google's help page for editing videos in Google Photos lists speed options: tap 2× or 4× to speed up, or ¼× or ½× to slow down, then save a copy. The options available can depend on your phone and app version.
iPhone
Apple's help page describes a Speed control in Photos for videos recorded at more than 30 fps, in iOS 18 and later. It's aimed at slowing footage down. To speed up a normal iPhone video, use the browser tool from Method 1 in Safari or a video editing app.
On either phone, check the saved copy plays at the new speed in another app before deleting the original. Some apps save speed changes as an edit you can undo rather than a new file, and the speed may not carry over when you share the video elsewhere.
Method 3: Speed up a video with FFmpeg
FFmpeg changes the picture speed with the setpts filter and the sound speed with atempo. setpts takes the inverse of the speed (0.5 for 2×); atempo takes the speed itself and keeps the pitch.
| Speed | Command |
|---|---|
| 1.5× | ffmpeg -i in.mp4 -filter:v "setpts=PTS/1.5" -filter:a "atempo=1.5" out.mp4 |
| 2× | ffmpeg -i in.mp4 -filter:v "setpts=0.5*PTS" -filter:a "atempo=2" out.mp4 |
| 4× (no sound) | ffmpeg -i in.mp4 -filter:v "setpts=0.25*PTS" -an out.mp4 |
| 0.5× slow motion | ffmpeg -i in.mp4 -filter:v "setpts=2*PTS" -filter:a "atempo=0.5" out.mp4 |
In current FFmpeg builds atempo accepts 0.5 to 100. For very high speeds the sound is rarely useful, so dropping it with -an is common. Slow motion repeats frames to fill the time, so it looks smoothest with footage shot at a high frame rate.
To keep the original quality as close as possible, add -crf 18 to the commands. To speed up only a section, cut it out first with -ss and -to, speed it up, and join the parts with FFmpeg's concat feature or an editor.
Because atempo keeps pitch by stretching the sound, very high speeds can sound choppy even within its range. For 3× and above on speech, it's usually better to drop the sound and add captions or music.
Choosing the right speed for your video
The right speed depends on what's on screen and whether people need to follow speech. These are sensible starting points; preview before saving.
| Video type | Suggested speed | Keep sound? | Notes |
|---|---|---|---|
| Talking head, tutorial | 1.1×-1.25× | Yes, keep pitch | Much faster and speech gets hard to follow |
| Screen recording of a slow task | 1.5×-2× | Often no; add captions | Narrate over it afterwards if needed |
| Cooking, crafts, process | 2×-4× | Music instead | Slow down again for the key moment |
| Timelapse from normal footage | 4× (repeat for more) | No | Run the export twice for 16× |
| Sports or action moment | 0.5× or 0.25× | Usually no | Smoothest from 60 fps or higher footage |
A few practical tips
- Speed up after trimming, not before. Cut the dead parts first, then decide whether the rest needs to be faster.
- Keep on-screen text readable. At 2× a caption shown for 2 seconds is on screen for 1; check our guide to subtitle reading speed if you burn captions in.
- For platform limits, speed only as much as you need. If a 3:20 clip must fit under 3 minutes, 1.15× does it; 2× doesn't help.
- Mixed speeds look natural in a story: normal speed for the start and result, fast in the middle.
- Very high speeds make the sound useless. Remove it and add music, or use the free mute video tool on the result.
To find the exact speed to hit a target length, divide the current length by the target: 200 seconds into 170 seconds is 200 ÷ 170, about 1.18×. The browser tool's nearest preset is 1.25×; FFmpeg takes any value.
Speeding up vs cutting the dead air
For talks, webinars and podcasts, speeding everything up isn't always the best way to make a video shorter. People speak at different speeds, and 1.5× can make a fast speaker hard to follow while a slow one still drags.
| Goal | Better approach |
|---|---|
| Timelapse, screen recording, process video | Speed up 2×-4× |
| Tutorial that feels slow | 1.1×-1.3× with voice pitch kept |
| Interview or podcast with long pauses | Cut silences and filler words |
| Long webinar for social media | Pick the best 30-90 seconds instead |
QuickVeed's Podcast to Clips does the last two: it transcribes a long video (1.5 credits a minute, rounded up), suggests 3-10 clips of 15-90 seconds, shortens long pauses and cuts ums and uhs automatically, for 3 credits a clip. Our guides to removing silence and removing filler words cover the manual way too.
Frequently asked questions
How do I speed up a video for free?
Open it in QuickVeed's free Video Speed Changer, choose a speed such as 1.5× or 2×, preview it and click Save at this speed. Nothing is uploaded. On Android, Google Photos also offers 2× and 4×.
How do I speed up a video without changing the pitch?
Use a tool that keeps pitch, such as the Video Speed Changer with Keep voice pitch ticked, or FFmpeg's atempo filter, which changes tempo without changing pitch.
How long will my video be at 2×?
Half as long. Divide the original length by the speed: 10 minutes at 1.5× is 6 minutes 40 seconds.
What is the best speed for a tutorial video?
Most talking-head tutorials still sound natural at 1.1× to 1.3×. Screen recordings of slow tasks often work at 2× or more with the sound removed and captions added.
Can I speed up only part of a video?
Yes, in a video editor: split the clip and change the speed of one section. With FFmpeg, trim the section out, speed it up and join the parts.
Does speeding up a video reduce quality?
The picture is re-encoded, which loses a little quality, as any export does. Frames are dropped to fit the shorter time, so fast motion can look less smooth.
Try it with your own video
Turn a long recording into short clips with the pauses already cut. Try the free tools first, then upload a video when you want captions, clips or dubbing. QuickVeed plans start at $18/month, and new accounts get a 14-day trial with 75 credits, no card needed. Sign up or see pricing.
Sources
Competitor details in this post were checked against these public pages in October 2026. Products and prices change, so confirm with each vendor before you decide.
