With iMovie open, go to <b>File &gt; New Project</b>, or click <b>Apple &#43; N</b>. This will open the New Project pane.The first step is to name your new iMovie project. Choose something that&#39;s easy to identify. I also suggest including the date in your iMovie project title, so you can save and keep track of multiple versions.When starting a new project in iMovie, you must choose the aspect ratio - widescreen (16x9) or standard (4x3). Choose the format that most of your footage is in. If you shot HD, it&#39;ll be 16x9. If you shot standard, it might be either. If you&#39;re combining both formats in your projects, iMovie will adjust so everything looks good in the frame. I suggest formatting iMovie projects using 16x9 widescreen whenever possible, because it&#39;s becoming the default setting for new TVs and online video players.<p>For every new iMovie project, you also have to choose a <a href="https://www.lifewire.com/guide-to-camcorder-frame-rates-487990" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="1">frame rate</a> - 30 FPS <a href="https://www.lifewire.com/why-ntsc-and-pal-still-matter-1847856" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="2">NTSC</a>, 25 FPS <a href="https://www.lifewire.com/pal-ntsc-secam-video-standards-1845714" data-component="link" data-source="inlineLink" data-type="internalLink" data-ordinal="3">PAL</a> or 24 FPS cinema. If you&#39;re in North America or have a camcorder made there, you&#39;ll want NTSC. If you&#39;re in Europe or have a camcorder made there, you&#39;ll want PAL. And if you have a special new camera that records 24 frames per second (you&#39;ll know who you are), choose that.</p>Project themes include a set of stylized titles and transitions that can be automatically added to your video. Some of the themes are cheesy - but they can be a fun way to quickly edit your video.Movie trailers are templates that include titles, music and shot lists that turn your footage into authentic trailers for whichever genre you choose. It&#39;s a fun and easy way to make your iMovie project unforgettable.Auto transitions are available if your select No Theme for your new iMovie project. Any of the iMovie transitions are available, and whatever you select will be automatically added between every video clip.When you&#39;ve customized all your settings, you&#39;re ready to create your new iMovie project!