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Problem with 5.1 AC-3 through Alsa, Pulseaudio on SPDIF ...
https://askubuntu.com/questions/483555/problem-with-5-1-ac-3-through-alsa-pulseaudio-on-spdif-ubuntu-14-04
14.04 pulseaudio alsa spdif ac3. Share. Improve this question. Follow edited Jun 17 '14 at 9:19. John N. asked Jun 15 '14 at 9:44. John N John N. 41 1 1 gold badge 1 1 silver badge 5 5 bronze badges. 1. I have the same problem, if you use VLC to play, all you have to do is changing the audio output module from default to Pulseaudio.
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/
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. If everything works fine, you’re going to see something like the following in mpv output: AO: [alsa] 48000Hz stereo 2ch spdif-ac3
[SOLVED] AC3 - SPDIF Passthrough - Pulseaudio - Karmic …
https://ubuntuforums.org/showthread.php?t=1304614
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 …
Jaunty = pulseaudio = no AC3 DTS passthrough from spdif
https://ubuntuforums.org/showthread.php?t=1151680
AC3 (Dolby Digital) is signed 16-bit little-endian 2-channel 48kHz PCM data (as far as we want pulseaudio and ALSA to be concerned), but the default pulseaudio sample-rate is 44.1kHz, so when an application attempts to connect to pulseaudio for passthrough pulse rejects the connection because of the sample-rate.
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/
PulseAudio for analog/spdif hell – so simple, yet you have to know…. 18.09.2011 by Nebukadneza. When it comes to a flexible audio setup Alsa starts to suck … hard. 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, …
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