Now it's very easy to change audio of any Video files, just select video and audio and add audio to video in all ways possible.
This app is best Music Video Maker, it change Background Music for video.

If you wanna add Audio to videos to make funny videos, or add recorded dialog in video to make dubbing videos, or add song in background of video then use this app. You can add audio to selected part of video.

FEATURES:-

1- Add Audio to Video :-
> Select any part of Audio and add selected part of audio in full Video.
> In case audio is smaller than video, Audio will repeat.

2- Add Audio + Original Audio :-
> Mix selected part of audio with video background audio.
> Change volume of original audio and selected audio.

3- Add Audio to Selected part of video :-
> Add selected part of Audio to selected part of video.
> In other part of video, original audio of video will play.

4- See preview and Save :-
> What You See, What You Get(WYSWYG).

5- Play and Share :-
> Play created Music videos in inBuild Video PLayer.
> Share your Music Videos, Edited Videos with your friends and others.

This App uses FFmpeg under permission of LGPL

// Option A //

To download Add Audio to Video & Trim mod from HappyMod.com.
You need enable the option "Unknown Sources".
1. Click on the above link to download Add Audio to Video & Trim mod APK.
2. Save the file in your device Downloads folder.
3. Now tap on Install and wait for the installation to finish.
4. Once it is done, open the game and start playing it right away.

// Option B //

To download Add Audio to Video & Trim from HappyMod APP, you can follow this:
1. Open your browser and download the HappyMod APK file from HappyMod.com - the only official website of HappyMod.
2. Open Android Settings and go into Privacy or Security.
3. Tap the option to Allow Unknown Sources and enable it.
4. Go to your Android downloads and tap the APK file.
5. Follow the directions on the screen to install it.
6. Search Add Audio to Video & Trim in HappyMod App.