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How to create slo-mo videos for Instagram on your iPhone

iMovie for iOS to the rescue.

Hyperlapse is great if you want to post sped-up timelapse videos to Instagram, but what about slow-motion videos?

That's easy if you captured a video using the slo-mo effect with the iPhone's default camera app -- all you have to do is post it like you would any other video. But if you have a regular-speed video you want to slow down, you'll need to do some tweaking with iMovie for iOS.

iMovie for iOS costs $4.99, £3.99, AU$7.99.

Slow things down with iMovie

You can adjust the speed of your video in iMovie in a few, quick steps:

1. Open iMovie and create a new Movie project.

2. Choose the default Simple theme unless you want to add some graphics elements to your video and tap Create in the upper-right corner.

3. Select a video and add it to your project.

Screenshot by Matt Elliott/CNET

4. Tap on the video timeline to highlight it and make the edit tools appear.

5. Tap the speed-dial button from the bottom edit menu.

6. Move the slider toward the turtle to slow down your video and then tap Done in the upper-left corner. You have seven speed options, from ⅘ speed to ⅛ speed. Remember, you have only 15 seconds to work with on Instagram, but you can always trim the video on Instagram if it runs longer than 15 seconds.

Screenshot by Matt Elliott/CNET

Save back to iPhone

With your video slowed down and saved, tap the share button and select Save Video. This will export your project from iMovie to your camera roll, from where it can be uploaded to Instagram.

Screenshot by Matt Elliott/CNET

Share on Instagram

Last step: share your slo-mo creation on Instagram. If you slo-mo video is longer than 60 seconds, you'll need to trim it down. You can also trim your video so that it's as short as 3 seconds.

For more, read our complete guide to iMovie for iOS.