While the iMovie application for Mac has a few more bells and whistles, Apple's mobile version of its video-editing program is jam-packed full of features and actually more intuitive than its big brother. Still, before you dive right into become a movie editor on your iPhone, it's good to know the basics first.
The first step to getting started in iMovie for iPhone is to create a new project, import photos and/or videos, and create your movie. Of course, after the movie is created, you can start applying your editing skills to it for a polished smartphone-based mini film, and we'll cover some of the editing tools you'll be using later. For now, let's just get a project started in iMovie.
Note that you can do all of these steps in either portrait or landscape orientation.
On the Projects viewer tab, tap on the "Create Project" icon, then select "Movie" on the following prompt. Alternatively, you could choose the "Trailer" option, which lets you make a Hollywood-style movie trailer in an automated way, but we won't be going over that in this guide. Feel free to play around with it, though.
iMovie will jump you straight to your Moments from the Photos app where you can start picking and choosing photos, videos, or both to start importing into your new project. If you'd like to search other albums, tap on "Media" in the top left (if in portrait mode), where you can choose between "Video," "Photos," or "Albums." In landscape mode, the Media browser is already opened on the left side.
If you're making a moving picture without any stills, "Video" would be your best option here. You can choose to drill down to specific albums, recent items, or just all of the videos in your Photos app. You could also choose "Albums" instead to see all of your video albums, as well as your photo albums (or mixes).
When you're checking out albums with photos only or photos and videos combined, just tap and hold on one to get an enlarged preview. Once you've found all the ones you want to add, just tap on the thumbnails until you see white/blue check mark icons appear on them.
If you are in an album with videos only, the view will change to mini-timelines for each video. To quickly scrub through a video without actually playing it, just tap on the video, then drag your finger right or left. A thumbnail will follow your finger showing you the frames of the video.
To actually preview a video, tap on it once to highlight it (if not already highlighted), then tap the play button. Then, on the same pop-up menu as the play option, you can check mark it. In this view, before you check mark a video, you can also adjust the start and stop points for it by dragging the yellow bars inward.
You can tell that videos are "checked" for import by the thin yellow bar on each one signifying how much of the video will be imported into the project.
When you've selected all of the photos and videos you want to add to your first project, just tap the "Create Movie" button at the bottom. And don't worry if you forgot any, you can add them in later!
Videos import as their actual length, while most photos import in 4-second clips. I say most because it all depends on the transitions applied, which could make them anywhere between 3 and 6 seconds long. By default, if an image starts or ends a video, it will be 5 seconds long, and middle ones will go for 4 seconds.
From here, you're ready to start playing around. You can delete clips, move clips around, change transitions or edit them, undo/redo changes, add more media, and much more. I won't go into these details in this guide since this article was meant to just get you started.
Feel free to play around in your new video project, and check back here for upcoming guides on harnessing all of iMovie's powers on the iPhone.