Having an issue recently where with multi-channel Audio, like movies, a loud sound, such as gunshots, snaps, loud tones, snaps etc.
Immediately after the sound, the volume with dip, or lower significantly and sound muffled, especially in the center and L/R channels.
It will continue to be low for a while then gradually go back to normal levels.
Or, immediately after the volume dips and is low, i can quick pause then instantly resume the video, this restores the proper volume level instantly, until there is another loud sound.
I have confirmed that the Apple TV audio setting “Reduce Loud Sounds” is OFF.
(i tried it with it on and it has a different much more dramatic effect, so for sure not related to this system setting).
I am not using Volume boost in Infuse.
I think it may have something to do with how Infuse is downmixing the 5.1 audio to stereo.
It does not do it with 2.0 audio, like music.
I have hooked up via Bluetooth to the Apple TV 4K a Qudelix-5K DAC connected to a set of 2.1 speakers.
I also use a 2nd one of these DACs connected to a set of headphones.
I have ruled out the DAC as the issue, as, this volume dipping happens when the headphones them selves are direct parried to the Apple TV, and as well as the speakers direct paired.
Seems any Bluetooth audio device as the output is affected.
When i use the 3.5mm audio out jack of my monitor direct to the speakers, it does not happen.
(i do not use this output as the signal is too strong and overpowers the speakers input, its a computer monitor as a display with no volume control, not a tv. Hence why I use a Bluetooth DAC which give much better sound overall anyways)
Furthermore, it is Infuse app issue, and not system as:
When i play the same movie via a streaming app, and not the local file via Infuse, this issue does not happen, even when using the Bluetooth DAC or connection to any other Bluetooth audio device.
They do not have this volume issue when the same files are played back via Emby or VLC apps.
It happens in Infuse with any 5.1 Dolby Digital or DTS etc movie rip file, have tried multiple.
This was not happening before, so I surmise a semi recent update may have changed something?
Apple TV OS 15.3
Infuse Pro 7.3.4 (4009)
Diags sent from app where i played a scene where the issue occurs each time, loud gun shot.