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Getting DTS 5.1+ sound via S/PDIF or HDMI using PulseAudio ...
https://blogs.gentoo.org/mgorny/2021/07/25/getting-dts-5-1-sound-via-s-pdif-or-hdmi-using-pulseaudio/
Tick off all that your connected device supports (usually all). Finally, you have to enable S/PDIF passthrough (the same option is used for HDMI) in mpv, via ~/.config/mpv/mpv.conf: audio-spdif=ac3,dts,eac3 audio-channels=5.1 The full list of formats can be found in mpv (1) manpage.
[SOLVED] AC3 - SPDIF Passthrough - Pulseaudio - Karmic …
https://ubuntuforums.org/archive/index.php/t-1304614.html
Hello, This isn't a request for assistance, just a tip as I didn't see much else for SPDIF passthrough and Karmic. When I upgraded to 9.10 from 9.04 my SPDIF passthrough was no longer working. In 9.04 I would use Pulseaudio for everything but DD or DTS audio. All sound would still go over SPDIF. I had SMPlayer set up to directly access the SPDIF hardware device …
PulseAudio for analog/spdif hell – so simple, yet you have ...
https://blog.kanojo.de/2011/09/18/pulseaudio-for-analogspdif-hell-simple-yet-you-gotta-find-it/
if you want output mainly on s/pdif (be it optical or coax), automatically upmixed to 5.1, then encoded to a52 so your receiver will eat it, but sometimes your general ac3-passthrough 5.1 movie, sometimes maybe even output to your regular analog output then its quickly becoming clear that alsa is basically a driver framework, and not a end-user …
PulseAudio - Official Kodi Wiki
https://kodi.wiki/view/PulseAudio
PulseAudio can be run in one of two modes these are: Passthrough Mode Used if you want to passthrough (bitstream) AC3, DTS, and EAC3 to an AVR or other device. In order to allow passthrough to work with PulseAudio then it MUST be set to use a 2.0 channel configuration, despite the 2.0 setting this will still allow 5.1 audio from AC3, DTS, and EAC3.
Passthrough - freedesktop.org
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Passthrough/
For users Passthrough output for the GStreamer PulseAudio plugin will be available in the next release (0.10.31) of gst-plugins-good. Once this is installed, you should be able to have passthrough output just work with Totem and most other players that use playbin2. VLC media player and LibVLC support passthrough starting with version 1.1.12.
Pulseaudio - SPDIF - Kodi
https://forum.kodi.tv/showthread.php?tid=56769
Pulse Audio does not however support digital passthrough, it's a known limitation and it might be true on digital pcm aswell, haven't ever tested to be sure. This however aren't XBMC specific. If it works with paplay and not in XBMC it's worthy to discuss here, otherwise refer to distro specific forum or pulseaudio mailing list.
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