Spark AR is a platform to create a Facebook or Instagram filter. The file required to upload audio in Spark AR is M4A. There are some ways to convert an audio file to M4A, and one of them is by using ...
[NEW UPDATE]
This tutorial version was created a long time ago, some things have changed and are no longer working.
However, I have provided a new version for it.
You can download it here.
https...