Is it possible to switch audio tracks in a video?

Note: I posted this question before, in the Animation section, but got no response. Sorry for re-posting.

Hello! First off, let me say that I'm very new to Unity, so please bare that in mind. I have watched the tutorials, read a great deal of documentation but yet have no actual experience. That said, I am currently working on a project that requires the playback of a video clip. BUT - and of course there's a but - the video hast to be played with up to 5 audio tracks (in order to avoid creating 5 videos, one with an audio track each).

Now, if I were to solve this problem in any other environment, I'd either use a video file with multiple audio tracks embedded, or just play an audio-less video and an audio file separately. However, I do not know if either is possible with Unity.

So, my questions are:

1) Does Unity support video files with multiple audio tracks?

2) If so, is there a way to switch between audio tracks through code?

3) If not, is it possible to play back a video and an audio asset simultaneously?

I am using Unity 4.5.1f3, if that helps.

Thanks in advance.

Cheers!

 

Hi! Thanks very much for the info! Sorry it took me so long to be grateful!

Just another quick question, then (still trying to work around this issue): Is there a way to play the audio track between two set times? Like, start playing at certain time and stop after some other time elapsed?

 

Once again, thank you very much! You rock!

Cheers!

 

On Unity 2020.1 (and probably some versions before 2020) you can actually use multiple audio tracks of a video. I tried it with an H264 video and ACC audio within a mp4 container. You can actually disable, mute and change the volume of every audio track.


So the only question left is, can you change it on runtime using scripts?

 

I just tried it, and it worked perfectly. I used the method

Code (CSharp):

1. videoPlayerComponent.SetDirectAudioMute(ushort trackIndex, bool mute)

.
I muted all other tracks but the track I need.
If you want to load a video via URL, you should set the count of the tracks in

Code (CSharp):

1. videoPlayerComponent.controlledAudioTrackCount = theCountOfTheTracksYouHave

,
or change the value from the inspector:


It was tested using RenderMode: Camera Far Plane on the Unity Editor, but it's not working on WebGL. It needs to be tested on different platforms.