Fmod working in unity editor but not on build (banks not found, StreamingAssets folder not created)

Unity
1

My project is correctly working in the Unity editor, but once I build it I get the following errors:

[FMOD] RuntimeBankModel::openFile : Failed to open file ‘[…]Project_Data/StreamingAssets\Audio/FMODBanks/SFX.bank’

BankLoadException: [FMOD] Could not load bank ‘[…]Project_Data/StreamingAssets\Audio/FMODBanks/SFX.bank’ : ERR_FILE_NOTFOUND : File not found.

And indeed, the folder StreamingAssets is not to be found under data.

The strange thing is I am not using the “StreamingAssets” import type, but the “Asset Bundle”.

Here are my Bank Import settings:
image

The banks are loaded with the FMOD Studio Bank Loader:
image

I am using Unity 2021.1.3f1 with the FMOD Unity plugin 2.02.00 and FMOD 2.02.00.

Any idea why this is happening?

Thanks

2

The problem is that the FMOD Studio Bank Loader isn’t designed to load Asset Bundles so you will need to make a custom bank loader. We have an example on how to do this, then to load Asset Bundles you would need to change the loading loop to:

foreach(var bank in Banks)
{
    TextAsset textAsset = Resources.Load("Audio/FMODBanks/" + bank) as TextAsset;
    FMODUnity.RuntimeManager.LoadBank(textAsset, true);
}

To be able to use Resources.Load will require you change your FMOD Asset Sub Folder in FMOD Settings to “Resources/Audio/FMODBanks”. Then you just need to swap out the FMOD Studio Bank Loader with your custom one and it should build fine.

3

Thanks, got it.

Changing the setting to Streaming asset made the issue go away. I was using the asset bundles because I needed the low latency for changing the cursor position (read that somewhere), but I’m not doing that anymore, so I switched back to streaming assets.

I have another issue where Fmod works in the editor but not when compiled now, but I will open a new thread.

Thanks for your help!