A free program for Android, by ApkStyle.

This application is a handy utility that allows you to mix audio with video files. It’s an easy-to-use tool that allows you to add music or sound effects to your favorite video clips. The way it works is quite simple and intuitive. You just need to select the audio file you want to add, choose a video file, and then you can begin mixing the two clips.

How can I use it?

You don’t need to install any other software to use this app. It works on most video and audio formats. You don’t need to change anything in your settings, as the app will handle all the complicated stuff for you.

What can I do with the results?

The app allows you to save the results of the mix in the desired folder.