No-sound mode in iphone

Unity
1

When I init fmod in my phone(iphone8 12.4.1), I got error “[FMOD] Studio::System::initialize returned ERR_OUTPUT_INIT,defaulting to no-sound mode”

How to solve this issure?

2

What versions of FMOD and Unity are you using?

3

1.10.11

4

Have you disabled the built in Unity audio?
https://www.fmod.com/resources/documentation-unity?version=2.0&page=troubleshooting.html#disabling-unity-inbuilt-audio

5

if I disabled the Built in Unity Audio
my Video will not sound!!

6

Are you able to test with the FMOD logging library to see if it provides any more information?

you may need the information on these pages to enable it:
https://fmod.com/resources/documentation-unity?version=2.0&page=platform-specifics.html
https://fmod.com/resources/documentation-unity?version=2.0&page=troubleshooting.html#logging