IMovie, the Best Video Editor
iMovie is a free video editing application made by Apple for the Mac, the iPhone, and the iPad. It includes a range of video effects and tools like color correction and image stabilization, but is designed to be accessible to users with little or no video editing experience.
With your project open in the iMovie timeline, tap the Add Media button.
Tap "Audio," then "My Music," then tap a category to find a song.
Tap the music to preview it.
For example, when you want to add a sound effect, search for the sound effect and insert it into the desired scene. The length of the music can be shortened.
If the background music is too loud, you can also reduce the volume of the background music separately.
You can make the music follow each other or add another effect music to the original music as shown below.
Myungja Anna Koh