How to Slow Down a Video Speed and Edit a Slow-Motion Video

When you want to make spectacular slow-motion videos on an iPhone, you can open the Camera app. You can see several options like Photo, Video, Portrait, and more above the record button. Scroll these options from left to right and locate the SLO-MO feature.

iPhone offers 3 commonly-used speeds for you to choose from. You can tap on them to freely set the recording speed. If you need to slow down a video speed, here you should select a speed less than 1x.

In the upper-right corner, you can change the video quality. After all these settings, you can tap and hold the red record button to capture a slow-motion video on your iPhone. Your recorded slow-motion video will be automatically saved in the Photos app.

To edit a slow-motion video on your iPhone, you can open it in the Photos app. Tap the Edit button in the top-right corner to display various editing features.

Some basic editing functions like trim, crop, rotate, filters, and more are designed in iOS. You can use them to freely edit a slow-motion video on your iPhone. After all your editing operations, you can tap Done in the bottom-right corner to save changes.

Open App Store, search for the iMovie app, and then free install it on your iPhone.

Open iMovie and create a new project. You are offered 3 options to start a project. Here you can select Magic Movie or Movie to load your video.

Tap the added video file on the timeline to display various editing options. Locate the speed icon at the bottom screen and tap on it. You can drag the speed bar to the left to slow down a video with ease. You are allowed to slow down your video to 1/8x.

After editing, you can tap Done in the top-left corner to save it. Tap on the Share button and then choose the Save Video option to save the slow-motion video on your iPhone.

Free download and launch this Video Converter Ultimate on your computer. Click on the Toolbox tab to display useful tools. Choose Video Speed Controller to create a slow-motion video.

Click the big plus button to load your video. It highly supports all popular formats including MP4, FLV, AVI, MKV, MOV, WMV, and M4V. A built-in media player will start to play your video after adding.

This Video Speed Controller tool offers 10 video playback speed options for you to change your video playing speed. You can select a specific speed and check the playback effect in the preview window. As you can see, it allows you to slow down a video to 0.75x, 0.5x, 0.25x, and 0.125x.

When you slow down the video to a suitable speed, you can rename your video, adjust various output video and audio settings, select a destination folder, and then click on the Export button to save it on your computer.

Go to the official website of 123APPS on your web browser. Select the Change Speed option from the drop-down list of Video Tools. You will be guided to a Change Video Speed page. Click the Open file button to upload your video.

Drag the video speed controlling bar to slow down your uploaded video. You are allowed to slow down a video to 0.25X speed.

If you want to edit a slow-motion video online, you can use its editing features. Next to the Speed option, you can easily locate other functions to edit your video.

After editing, you can click on the Settings button to choose a file format. Then you can click the Save button to store this edited video on your computer.