How to Change Video Speed: Fast & Slow Motion Editing on Any Device

By speeding up or slowing down videos, you can easily make videos more attractive. Making a video slower is a great way to create a cool slow-motion effect, which helps you focus on important details or dramatic moments. On the other hand, if you make a video faster, you can turn a long event, like a sunset or a cooking session, into a quick, exciting time-lapse video. You can also use speed changes to make a scene funnier or more serious. Plus, it's a handy trick for making long videos shorter and more engaging for social media. Today, this post aims to provide easy ways to help you change video speeds to create high-quality videos.

Method 1: Change Video Speed on iPhone with iMovie

Can iMovie change the speed of video?

As the official video editor for iPhone, iPad, and Mac, iMovie is designed with many basic editing features, including speed changing. Yes, you can use iMovie to change the speed of a video with ease. This part will guide you to change the video speed on iPhone using iMovie step by step. If you want to change video playback speed on an iPad or a Mac, you can use a similar method.

1. First, you should open App Store on your iPhone and free install the iMovie app. Open it, tap the plus icon, and choose Movie to create a new project. After that, you need to select and load your video to iMovie.

2. Tap and highlight this added video on the timeline to arise editing functions. You can tap the Speed icon on the bottom screen to easily change video speed. You can speed up or slow down video by dragging the speed bar to the right or left.

3. Tap the Play button to check the edited video speed. When you change the video to the suitable speed you need, you can tap Done in the top-left corner to finish the editing. Then you can choose to share the video with others, store it on the iPhone Camera Roll folder, or edit the video again.

Using iMovie to change video speed on an iPhone is a user-friendly and accessible option for basic editing. Its clean interface and native integration with iOS make it ideal for quick adjustments to video speeds. However, the limitations is that it lacks advanced video speed control features for you to make precise adjustment.

Method 2: Speed Up or Slow Down Videos on Windows/Mac

To change the playing speed of a video on a computer, you can use the all-featured video editor and converter tool, AnyMP4 Video Converter Ultimate. It is equipped with many useful tools, including a Video Speed Controller, which can help you easily adjust video speeds. It contains nine different speed ratios from 0.125x to 8x, which allows you to speed up or slow down videos according to your needs. After the adjustment, this powerful video speed editor provides settings for you to select the output format, encoder, resolution, frame rate, etc. What's more, many commonly used editing functions are designed in this software. You can freely download it to edit and change video speed on Mac and Windows PC.

• 1. Carry toolbox of Video Speed Controller, Video Trimmer, Video Enhancer, Audio Sync, Volume Booster, and more.
• 2. Speed up or slow down the video playback speed with ten speed options.
• 3. Support 8K/5K/4K, HD, and SD videos in MP4, MOV, AVI, FLV, MKV, and other formats.
• 4. Offer different editing functions to edit video, adjust image/sound effects, and enhance quality.

1. Download and open this Video Converter Ultimate on your computer. Click the Toolbox to display more tools. Find and choose the Video Speed Controller to change video speed.

2. When you enter the main Video Speed Controller window, click the big plus button to import your video file you want to edit its playing speed.

3. Select a suitable speed option for fast or slow motion video. Generally, 0.75x and 2x are the most common choices, while other options would make the videos weird.

Note: There is a built-in media player for you to directly view the speed-changing effect.

4. After you change the video playback speed, you can click on the Export button to save it on your computer.

AnyMP4 Video Converter Ultimate provides powerful video speed adjustment performance with its clear interface. Moreover, its format selection also gives you the convenience of sharing your videos. If you need, it provides multiple video and audio tools for you to choose from. The drawback is that it is not a free tool, so some people would not be willing to buy it for its advanced features.

Method 3: Online Tool to Adjust Video Playback Speed

Adobe Spark is an easy-to-use online video editor powered by Adobe Premiere. It allows you to speed up or slow down a video directly on your web browsers like Chrome, IE, Edge, Safari, or Firefox.

1. Open your web browser and navigate to the Adobe Spark change speed site. Click on the Upload your file button to select and upload your video file.

2. You can view your uploaded video, freely trim it to remove unwanted parts. Also, you are offered five options to change video speed online.

3. Select a suitable video playback speed, and then click on the Download button to save the edited video on your computer. To proceed with the speed changing, you are required to sign up and sign in with an Adobe account.

Besides, if you want to speed your HTML video palyback online, then you can try and install the video speed controller extensions.

Adobe Spark provides a simple and visually appealing way to adjust video speed, making it a great choice for quick edits and social media content online. The drag-and-drop interface of this online video speed editor and its cloud-based accessibility allow users to create and share videos effortlessly. Its free version is limited to advanced features, which you can subscribe it to try more functions.

Method 4: Use VLC to Control Video Speed

If you want to change video speed for watching, you can rely on some third-party media players like VLC and PotPlayer. Considering that PotPlayer is only compatible with the Windows system. So here we take the VLC Media Player as an example to show you how to change the speed of a video. As a cross-platform player, VLC supports Windows, macOS, Linux, iOS, and Android.

To change the playback speed of a video on a computer, you can play your video in VLC, click on the top Playback menu, choose the Speed option, and then use the offered speed option to speed up or slow down the video playing speed.

To change video speed in the VLC for Mobile app, you can open the VLC app, play your video using it, and tap on the video to arise playing options. Tap the clock icon and then use the Playback speed to change the video speed on your iPhone, iPad, or Android phone.

VLC is actually a versatile tool that can even adjust video speeds with ease. This video speed changer is a free and open-source tool that would be the first choice for many people. Its steps are easy to learn, allowing beginners can adjust video speeds without professional skills. Some people may think its interface is outdated and it lacks advanced video speed adjustment features.

Method 5: Browser Extension for Speed Control

You can easily change the video playing speed while watching it. While for many videos on other sites, you don't have a speed option to speed up or slow down the video. In that case, you can rely on a browser extension like Video Speed Controller to change the speed of a video. This Chrome extension supports many video platforms, including TED and more.

1. Open your Chrome browser, search for and install the Video Speed Controller extension. When you find it in the Chrome Web Store, you can click on the Add to Chrome button to add it to your web browser.

2. After the installation, you can open any HTML5 video and change its playback speed online. In the top-left corner of the video playing window, you can see a speed indicator like 1.0X. You can press the D key to speed up the video and press S to slow down the playback speed.

This tool is a convenient and efficient video editor for you to change video speeds without downloading the software on your computer. Its biggest advantages are ease of use, real-time control via keyboard shortcuts, and the fact that it's completely free. However, it only works on supported websites and doesn’t offer editing capabilities for saving modified videos.

Conclusion

When you watch or edit a video, you may frequently need to change video speed. Here in this post, you can learn five effective methods to change the playback speed of a video on iPhone, iPad, Android phone, and computer.