I’ve been getting the error ‘The format of the source file is invalid’ when building banks for PS4 and 5. The files creating this problem have a 5.0 format. Is there any incompatibility between PS and any kind of surround files? On Build Preferences, PS4 and PS5 are set to Surround 7.1, and I’m using FMOD 2.01.09.
Unfortunately, for PS4 the AT9 format only supports mono, stereo, quad, 5.1 and 7.1. More options were introduced for the PS5 but for compatibility FMOD hasn’t adopted them. I’d recommend changing your 5.0 file to be 5.1 (with a silent LFE channel).
As a side note, we are actively working on Opus compression support for PS5 which will support any number of channels up to 32.