Upon digging a little further with Open Camera, I’ve actually been able to find a workaround. The settings of Open Camera are fairly detailed, and the Video Settings panel actually allows the user to specify the audio source as:
- Camcorder
- External mic (if present)
- Default audio source (this was the default setting for me)
- Optimised for voice calls
- Optimised for voice recognition
- Unprocessed
Selecting ‘Unprocessed’ as the audio source and then recording video with Open Camera yields the results I was hoping for. As the setting suggests, audio is unprocessed and hence there is no background noise reduction, unwanted audio ducking or the like. The ideal situation would be for this audio setting to exist in the standard FP4 camera app, so until it does, I’ll be using Open Camera to record videos.