The Detailed Guides to Speed up Videos on iPhone for Making Interesting Videos

November 08, 2021Ashley Mae

Creating slow-motion or speed-up videos on iPhone 13/12/11/X is very popular now. It will make your videos more interesting and attractive before you uploading them on social media platforms. It is known that the easiest way to slow down videos on iPhone is using the Slo-Mo camera mode to take slow-motion videos without additional editing. But how to speed up videos on iPhone?

Luckily, you can use the built-in video editor -iMovie to speed up a video on iOS 13/14/15. In this way, you can even change the slow-motion videos to regular speed. But to speed up videos on iPhone with more than 2X speed, you need to rely on third-party editor apps. Learn the detailed steps in the following.

Speed up Videos on iPhone

Part 1: How to Speed up Videos on iPhone through iMovie

After you update your iPhone to iOS 13 or higher version, you can use iMovie, the default speed controller for iPhone to speed up videos on iPhone at any speed less than 2X. Here you can learn about the detailed guide:

Step 1:
Launch iMovie app on your iPhone, and tap the Plus icon to create a new project. Then choose the Movie option and select the desired videos in the album. Or you can tap the Media option and find all the videos on your iPhone. After choosing the desired videos you want to speed up on iPhone, tap the Create Movie button to start.
Create Movie
Step 2:
After that, you can use the basic editing tools to trim, crop, add filters and subtitles to the videos. Tap the Clock icon to enter the speed controller of iPhone videos, and then you can pull the speed control slider freely to change from 1X to 2X.
Speed Up Video
Step 3:
At last, tap the Done button at the top-left corner to save the changes. And then you can choose to download the accelerated videos on the local file or directly upload them on the Internet.
Save

Part 2: 2 Efficient Methods to Speed up A Video on iPhone

Since iMovie only supports speeding up videos on iPhone at 2X speed, you should rely on other editor apps to speed up iPhone videos at a faster speed. In this case, there are 2 powerful speed controllers introduced in the following.

1. Slow Fast Slow

As the name said, Slow Fast Slow is a designed app to slow down and speed up videos on iPhone. You can even divide the video into several parts and change the video speed separately. It also supports uploading and sharing the edited videos on social media directly. Learn about the detailed steps below:

Step 1:
Download Slow Fast Slow on the App Store and open it. Tap the Plus icon at the bottom to select the desired videos.
Step 2:
Then you can long-press the screen to add or remove the time point. You can pull the lines between the points to adjust the speed of the corresponding part. At last, tap the Export icon to save the videos.
Slow Fast Slow

2. Kapwing

Although Kapwing is a desktop video speed controller, you can use it online to speed up videos on iPhone. It supports speeding up videos on iPhone up to 4X with simple steps. The steps are listed in the following:

Step 1:
Navigate to the website of Kapwing. Tap the Plus icon to upload the desired iPhone videos you want to speed up. You can also use it to take videos and edit them at any time.
Step 2:
Then you need to choose the Edit option to adjust the video settings. To speed up video on iPhone, you can tap on the Plus icon below the Speed list. After that, you can choose to download or share the videos.
Kapwing

Bonus Tips: How to Speed up Videos on Windows/Mac Freely

When your iPhone is nearly out of storage space, you can choose to sync the videos and speed up iPhone videos on your Windows/Mac. In this case, Aiseesoft Video Converter Ultimate will help you a lot. It’s a versatile video converter and editor that supports speeding up iPhone videos, converting video formats, editing video effects, etc.

Video Converter Ultimate

Downloads

Aiseesoft Video Converter Ultimate

  • Speed up iPhone videos at a speed between 1X to 8X.
  • Able to crop, trim, and add filters to the videos easily.
  • Provide 1080p, 2K, and 4K resolution to export high-quality videos.
  • Preview the speed control effect before saving the videos.

Part 3: FAQs about How to Speed up A Video on iPhone

1. Can I speed up videos on iPhone at more than 2X speed?

Of course, you can. Although the built-in video editor - iMovie only supports speed up iPhone videos to 2X, you can use the mentioned editor apps to help you.

2. Will speeding up videos on iPhone affect the video quality?

No. If you can export the accelerated videos with the original parameters, the videos will not lose any quality. Thus, the best way is to use Aiseesoft Video Converter Ultimate to speed up iPhone videos with high quality.

3. How to speed up a video on iPhone through the Photos app?

Launch the Photos app on your iPhone, and find the desired videos to open. Then tap on the Edit option at the top-right corner. Then you can drag the lines to change the speed freely. After that, tap on the Done button to save the videos.

Conclusion

This article has introduced three efficient ways to speed up a video on your iPhone 13/12/11/X. Using iMovie is the easiest way. But to speed up iPhone videos at more than 2X speed, you should rely on professional editor apps. What’s more, you can use Aiseesoft Video Converter Ultimate to control video speed on Windows/Mac. Welcome to leave your comments below.

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