How to Use iMovie to Create Video in Slow Motion

December 15, 2021Jenny

Thanks to the advanced technology, you do not have to use slow motion camera in order to capture video in slow motion now. Many video editors have a function or effect called slow motion, such as iMovie, Aiseesoft Mac Video Converter Ultimate, etc. In addition, these editors can slow down video clips and speed up videos. And this post will show you how to pull slow motion in iMovie for Mac and an easy way to slow down videos on Mac.

Create Video in Slow Motion

Part 1. Easy Method of Making Slow-motion videos on Mac

Apart from iMovie, there are many convenient video editors for mac too. Aiseesoft Mac Video Converter Ultimate can be said to be the best video speed controller on Mac. And you can use it as a video editor and video/audio converter. Besides, making collages and GIFs, compressing videos, and controlling the audio volume can also be achieved using this program.

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  • Offer the function for users to adjust their videos' speed as they like.
  • Enable users to edit videos, including 4K UHD videos on Mac.
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  • Can convert 2D videos to Anaglyph, Side-by-Side, or Top/Bottom 3D videos.
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Step-by-step guide of slowing down videos on Mac

Step 1:
Go to the official page of Aiseesoft Mac Video Converter Ultimate and click the FREE DOWNLOAD button to get its installation package. Then install it as the on-screen instruction says.
Step 2:
Open the program and enter the Toolbox window to click the Video Speed Controller button.
Step 3:
Add the video you need to slow down to the speed controller window.
Step 4:
When you have to turn your video speed in half, you can choose the 0.5X button. Later, click the Export button to get the slow-motion video in the local folder of your Mac computer.
Add Video to Speed Controller

Part 2. How to Make iMovie Slow Motion Effect on Mac

Step 1:
Add video clip to iMovie Project

Drag and drop the video clip to iMovie project. If the video clip has already added, open the iMovie Project.

Step 2:
Select Clip Adjustments option

When you add video clip to iMovie, you can double click the video clip or click the small gear in the lower left corner of the video clip. And then select the Clip Adjustments option to make further adjustment.

Clip Adjustmen
Step 3:
Adjust speed in Slow motion of iMovie

From the popup Inspector windows, you can adjust the speed of the video clip by moving the speed slider to left or right. After that you can click the Done button to save the file.


When you add slow motion in iMovie, the video length will be much longer compared to the original video. iMovie will duplicate frames in your video clip to fake the slow down effect.

Actually, you could also add iMovie themes for making your video more vividly.

Bonus: Best alternative video editor to iMovie slow motion

Apart from iMovie that gives you options to slow motion effect, there are also many other video editing software which have slow motion feature. Here we would like recommend to you the best free overlay video editor – Free Video Editor.

Aiseesoft Video Editor is the best free video editing software. It enables you to trim video effortlessly, along with multiple templates and effects to make a perfect intro video.

Aiseesoft Free Video Editor


Free Video Editor

  • Make slow motion effects and more popular effects with ease.
  • Multiple templates are provided for free.
  • Clip and join video or audio files.
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Part 3. Slowing down Videos with iMovie on iPhone/iPad

iMovie has the mobile version for iPhone/iPad, so you can use it to edit your videos, like making slow-motion videos on your iOS devices too. The following content will tell you how to use iMovie on iPhone.

Step 1:
After downloading and installing iMovie on your iPhone, please open the software and tap on the Create Project icon and the Movie button to add the video.
Step 2:
Later, there will be an interface where you can choose the video you want to slow down. After selecting the video, you can tap on the Create Movie button to begin editing your video.
Create Project iMovie
Step 3:
On the editing feature bar at the bottom of the screen, you can find an icon that looks like a clock and tap on it. Then move the white circle point from right to left to make your video slower.
Step 4:
Finally, to save the slow-motion video you have made, please tap on the Done button on the top left corner and tap Export > Save Video to save the video in the local.
Speed up Video iMovie

Part 4. FAQs about iMovie Slow Motion

Is iMovie free or paid?

Whether you are a Mac user or an iOS user, you can free download iMovie on your devices and use its all functions for free.

How do you watch an iMovie on a PC?

If you create a movie using iMovie and want to watch it on your PC, you can convert its format to the format that Windows Media Player supports through Aiseesoft Video Converter Ultimate.

What can iMovie do?

As a popular editor for Apple products users, iMovie enables users to cut and edit videos, audio, and images without quality loss.


In this article, we have mainly showed you how to make slow motion video using iMovie. Still have more questions about slow motion in iMovie? Feel free to leave your comments down below.

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iMovie Edit

1.1 How to Add Subtitles in iMovie

1.2 Add Music in iMovie

1.3 iMovie Effect

1.4 iMovie Green Screen

1.5 iMovie Trailers

1.6 iMovie Picture in Picture

1.7 iMovie Slow Motion

1.8 How to Rotate Video in iMovie

1.9 iMovie Split Screen

1.10 How to Add Transitions in iMovie

1.11 iMovie Time Lapse

1.12 iMovie Stop Motion

1.13 iMovie Split Clip

1.14 How to Crop Videos on iMovie

1.15 How to Do a Voiceover on iMovie

1.16 iMovie Aspect Ratio

1.17 How to Fast Forward in iMovie

1.18 Zoom in/out on iMovie

1.19 iMovie Stabilization

1.20 iMovie Fade Audio

1.21 How to Reverse Video in iMovie

1.22 How to Join Clips in iMovie

1.23 Trim Auido in iMovie

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