How to combine multiple clips to make an app promotion video

For this tutorial you will need a number of short video clips that you want to stitch together into one final video. You can use the result on social media or maybe on your website.

You can merge in any type of clip to your movie. In fact, it often looks great if you mix the various types. Here are some examples:

Here's the video we'll make

... and here’s how to do it

Take a look at this quick video first. We'll go into details about each step below.

Gather your clips! - let's dive in

It can be helpful to save all your clips for a video in the same folder. If you are using Rotato, you can drag the clips directly from Rotato into the folder. Actually, you can even drag clips right from Rotato and into iMovie!

Step 1: Get iMovie

There is a good chance you already have iMovie on your computer. Check your Applications folder. If you don't, you can download it from the App Store. It's not free, but it also won't cost you much more than a burrito.

Step 2: Prepare your iMovie project

Go to Projects and click "Create New". iMovie will ask if we want to make a movie or a trailer. Choose Movie.

We now see our empty project. The bottom part is our timeline.

Step 3: Drag in your clips

It's time to find that folder of clips you prepared earlier. We can now drag in the first clip. Go to the folder with your clips and select the clip you want to be the first one in your video. Drag the clip from Finder to the timeline in your iMovie project.

That's it! You should now see the clip in your iMovie timeline. If you move your mouse over the clip you can see a preview in the upper right corner.

TIP: You can make the clip appear smaller in the timeline by pinching with your fingers on your trackpad. You can also hold down the Command key and press minus. This will give you a better overview of your timeline.

Let's drag in the next clip. You already know how to do it. Drag the file from Finder and drop it in your timeline. Only this time, you drag it in to the right of the clip that is already there.

You just made your first stitched video! Press the Space button on your keyboard to watch it in all its glory.

Drag in as many clips as you want.

Step 4: Adjust the clips

Are some of the clips a bit too long? No problem. Simply move your mouse over a clip's right or left edges. You can see that your mouse cursor changes to two arrows. If you click and drag you can make your clip shorter.

TIP: You can also make a clip go faster or slower. This is useful if you are making a video for social media. As an example, Twitter has a limit of 45 seconds per video. Here's how you speed up a clip: Right click on the clip. Click on "Show Speed Editor." You will now see a small slider at the top of the clip. If you drag the slider to the right, the clip will go faster. If you drag it to the left, the clip will go slower. It's that simple.

Step 5: Add transitions

Press Space to see your entire movie. You will notice one thing. The clips are all there, but they jump directly from one clip to the other. Wouldn't it be nice if they faded instead? 

Let's add some transitions between the clips. At the top left area, you will see a tab menu. Click the Transitions tab. Now try dragging the Cross Dissolve transition down to the little space between the clips on the timeline. Hit Space again. At the end of the first clip, you should see a nice fade out and in to the next clip.

Continue adding transitions as you see fit. And don't forget to experiment with transitions and find the ones that you like the best.

Step 6: Export and share

You have a movie that you're happy with. It's time to share it with the world!

There's a Share icon at the top left corner. You can share directly to Youtube, and Vimeo, or you can just save the movie to your own computer.

A quick note on sharing to Twitter

At the moment, Twitter doesn't support MOV files, the kind of files iMovie makes. If you try and drag a MOV file into a new tweet, you'll see a blank video. But don't worry, converting the video is as easy as this:

Converting a MOV to MP4 - free as in beer

And that's it. You now have an MP4 movie file that you can drag directly into a new tweet on twitter.com.

You've now seen how you can make a quick video with several clips, both from and not from Rotato. We love seeing what our users make, so make sure you mention @rotatoapp on Twitter, or use the chat box here on the site. We sometimes retweet the best videos to all our followers. Have fun!

More mockup tutorials

Make your first 3D mockup promo video in just 5 minutes today

Try it todayBuy Rotato
Try for as long as you want, no credit card required. It's on us.