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Intro to editing movies in iMovie on iPhone
After you create a movie project, you can assemble video clips and still photos, add music and sound effects, add a background, record a voiceover, and even apply filters or a theme to add a professional look and feel.
Tip: If you’re creating a music video, you can add the music to your project first so that you can align video clips to it. See Add music and soundtracks in iMovie on iPhone.