Add a MP3 music background to a video

How to add a MP3 music background to a video ?

  1. As the video source was filmed on a smartphone change the screen size 
  2. Upload the MP4 video
  3. Upload the MP3 music file Your video will start automatically to record
  4. Let the video play until the end and Download your video

 

Related posts:

  1. Hack a video soundtrack and use it as music background for another video
  2. Turn online music track into a video in real time
  3. Replace any video background with a transparent background
  4. Add ambient sound to video online

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