Choose a video editor app or software
Open the app and create a new project
Import the pictures you want to use
Arrange the pictures in the order you want
Set the duration for each picture
Add a song or audio file to the project
Trim the song if needed
Sync the pictures with the music
Add transitions between pictures if desired
Add text, filters, or effects if needed
Preview the video
Make any final edits
Export or save the video in your preferred format