2021-09-11, 03:31
I don't think real pass through is possible with the current version state. What comes out as DD or DD+ is re-encoded by the stick, I came to that conclusion when trying to play a 7.1 DD+ and it came out as 5.1.
After many tests this is the config that worked to get a pure 7.1 PCM stream.
Fire TV Audio setting : Best Match
Kodi Audio Setting :
Audio Decoder
Audio output device : AudioTrack(IEC), Kodi IEC packer (recommended)
Number of channels : 7.1 or 5.1
Output configuration : Fixed (this is important to force the PCM stream)
Limit sampling rate (kHz): 96.0 (this is important to force the PCM stream)
Send low volume noise: OFF (this is important to stop the Fire Stick from crashing and rebooting)
The pass through section will disappear with the Fixed configuration above, don't worry, it doesn't work anyway.
After changing anything on the audio settings page always restart Kodi before playing something!
BONUS: 24Hz
I also got 24Hz working on my setup, thou it some time gets laggy and skip frames. (so I mostly don't use it)
Go to Fire TV Display settings and change the resolution to any other option, then when to it shows the confirmation dialog hit CANCEL so it returns to AUTO! That's it!
The option to Match Original Frame Rate should be ON.
This must be done after every reboot.
Only Prime Video and Kodi seams to switch frame rates when playing though.
After many tests this is the config that worked to get a pure 7.1 PCM stream.
Fire TV Audio setting : Best Match
Kodi Audio Setting :
Audio Decoder
Audio output device : AudioTrack(IEC), Kodi IEC packer (recommended)
Number of channels : 7.1 or 5.1
Output configuration : Fixed (this is important to force the PCM stream)
Limit sampling rate (kHz): 96.0 (this is important to force the PCM stream)
Send low volume noise: OFF (this is important to stop the Fire Stick from crashing and rebooting)
The pass through section will disappear with the Fixed configuration above, don't worry, it doesn't work anyway.
After changing anything on the audio settings page always restart Kodi before playing something!
BONUS: 24Hz
I also got 24Hz working on my setup, thou it some time gets laggy and skip frames. (so I mostly don't use it)
Go to Fire TV Display settings and change the resolution to any other option, then when to it shows the confirmation dialog hit CANCEL so it returns to AUTO! That's it!
The option to Match Original Frame Rate should be ON.
This must be done after every reboot.
Only Prime Video and Kodi seams to switch frame rates when playing though.
