I am integrating a camera with HomeKit. The audio and video streams work in the HomeKit Accessory Tester, but they do not work when using the Home app on an iPhone (Failed to select audio config – Could not find the right match in the supported list. Session is not in progress). I have a single audio configuration: Opus 16kHz mono with a constant bitrate of 24kbps.
The details of most MFi specifications are protected by NDA, so your question cannot be answered on this forum. The MFi program has its own support process, the details of which you can find in the "Developer Technical Support" section of the "MFi Licensing Handbook", which you'll find on the MFI Portal.
Please submit your MFi specific question(s) using that process.
__
Kevin Elliott
DTS Engineer, CoreOS/Hardware