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Slow Down or Speed Up Videos Easily on PC, Online, and Phone

Larry Jordan
Larry Jordan Originally published Dec 05, 23, updated Dec 10, 24

Have you ever wondered how to slow down the video to make it more surreal? You may want add an extra flair or revamp educational content in the video. You may want to slow down a product demo or glide through a lengthy instructional video. Adjusting the speed of the video can be beneficial in many ways. Let’s explore how to slow down videos or speed them up for various reasons. In this article, you will learn three ways on how to speed up a slow mo video or slow a fast motoon one.

In this article
  1. Part 1. Slowing Down or Speeding Up Videos on PC: Windows and Mac Guide
  2. Part 2. How to Quickly Adjust Video Speed Using Online Tool
  3. Part 3. A Guide to Slowing Down or Speeding Up Videos on Android and iPhone
  4. Conclusion
Speed Ramping Video Maker
Slow down or speed up your videos with better control of your keyframes to create unique cinematic effects!
Wondershare Filmora

Part 1. Slowing Down or Speeding Up Videos on PC: Windows and Mac Guide

The most effective way to adjust the speed of a video on a PC is to use video editing software. With Wondershare Filmora, you get the tools and features to adjust the speed of your videos. The AI Co-piloy feature is particularly useful in guiding you through the steps of editing your videos. The versatile video editing software helps you adjust the speed with just a few clicks. The approach is similar for both Windows and Mac devices, making Filmora a user-friendly and effective software for editors at all experience levels. So, how do you make a video fast-motion?

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Step 1: Launch Filmora and Import Video Files

Once you start Filmora on your PC, click on New Project. Then select the Import icon to choose the files you want to import from your computer library. Another way is to drag and drop the files from your computer into Filmora.

launch filmora

Step 2: Add the Clips to the Timeline

After importing the video files, drag and drop them onto the timeline. This prepares the clips for speed adjustment.

add video clips

Step 3: Open the Speed Adjustment Panel

The Filmora feature that allows you to adjust the speed of your video clips is the speed adjustment panel or Uniform Speed. To open the Uniform Speed Panel, double-click the video clip in the timeline. Find the Uniform Speed option in the pop-up column that appears and click on it. Make adjustments using the speed control.

uniform speed feature

Step 4: Adjust the Speed Slider

In the speed control panel, clikd the speed adjuster slider. Adjust the slider to the rate of speed you want for your clips between 0.5 (slowest) to 2.00 (fastest).

speed adjuster slide

Step 5: Detach the Audio

Once you adjust the speed of your video, the audio will be affected. It can be a great idea to detach the audio to further edit the video. Right-click the video clip on the timeline, and select the Detach Audio option from the pop-up column. Once the audio has detached, you can further adjust it with fade and other available options.

detach audio

Step 6: Export Video

Once satisfied with your video adjustments, export it to the desired format. For this step, click the Export button. Select the directory and video format and other preferences, then click ok.

export file

Part 2. How to Quickly Adjust Video Speed Using Online Tool

Are you wondering how to speed up slow mo video or slow a video without installing a special video editor on your computer, using an online tool is the best choice. A free online tool like Fastreel helps you change the speed of short videos, which are smaller than 500 MB with just a few steps. However, this online tool oonly works with MP4 format. When working with other video formats, you will have to convert them first.

Here’s how to speed up a slo mo video using Fastreel

Step 1

Go to the Fastreel website. Upload the video you want to slow down or speed up. Click the Add Your File button to choose and upload the clips.

fastreel
Step 2

Set the Appropriate Speed. Select the speed you want for your video onVideo Speed section. The results will be displayed in the preview window. Save Processed Video. Mute the video by clicking the corresponding icon if necessary. Then, save the video by selecting the Export Results button.

set speed

Part 3. A Guide to Slowing Down or Speeding Up Videos on Android and iPhone

How to speed up slow mo video on phone is a normal concern for many people. Luckily, there are many apps available  to do that. In most cases, making a mobile video bit slower or faster will make it seem better. You may want to reduce the duration of your video or check out the details in a specific scene. You may want to speed watch or speed listen to the content. Let’s have a look at how you can achieve this on your Android or Apple device.

1. How to Change the Speed of Your Video on Android

When someone asks how do I slow down a video? The first response that comes to mind is using their phone. This is the device they always have with them. And most people, consider editng easier on theior phones than compiters. For someonw with an Android phone, the Gallery app makes it easier to adjust the speed of a video. Find out how to make fast motion video or slow mo with Android phone.  Follow these few steps:

Step 1Launch the Gallery app

Open the video you want to edit. Then, tap on the Edit icon at the bottom to open the video editor.

start gallery
Step 2Find the Speed Icon

Scroll through the list of the icons at the bottom. Then tap on the Speed icon to start making the adjustments

speed icon
Step 3Adjust the Speed of the Video

The default speed of the video is 1x. Tap on 2x to seep it up or 1/2x to slow down the video. Then press the Play icon to preview the view with these speed settings.

adjust speed
Step 4Save the Video

Once satisfied with the speed of the video, tap the save button.

save video

2. How to Change the Speed of Your Video on iPhone

The iMovie app offers an easy and effective way of speeding up or slowing down videos on your iPhone. How do you make a video fast motion? The free video editing app from Apple is available for iOS and and can also be used on iPads:

Step 1Launch iMovie App

Once you have installed and opened the iMovie app on your phone, tap on the Create Projects (+) button.

create video
Step 2Select Movie

The app will prompt you to select the kind of project you want between Movie and Trailer.

select movie
Step 3Create Movie

Tap on the video that you want to adjust speed. Then, tap on the Create Movie button.

create movie
Step 4Adjust the Speed of the Video

On the editing screen, tap on the video clip. The video editing tools will appear at the bottom, allowing you to make the adjustments of your choise. Tap on the Speed icon that looks like a speedometer and drag the slider until you attain the speed you want.

adjust speed
Step 5Preview and Safe

After adjusting the speed, play the video to preview it with the new speed. Then tap on the Done button at the top to save the project. Hit the Share icon, and the Save the Video.

save

Conclusion

When it comes to creating slow motion videos, Wondershare Filmora stands out as a great software to use. Filmora V13 allows you to speed up or slow down videos with only a few clicks. The versatile video editing software can be used on Windows and Mac PC while producing the same quality of videos. Be sure to check out the range of AI features available in the software. These are helpful in automating most of the tasks and doing a lot more with your editing tasks.

Larry Jordan
Larry Jordan Dec 10, 24
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