[LIVE] Dharma2 - ION2 -o HDMI - no sound in certain videos
#1
Hi all!

Done my searching and tried a couple of tweaks for few hours, but can´t figure this out myself...

I have this Zotac ZBOX HD11 -machine and Dharma2 beta Live installed onto it. Sound works otherwise fine (music and DTS/DD/PCM -videos), but videos that have normal stereo-sound won´t give any sound, nor error (in my own library or for example youtube).

I´ve understood that ALSA is the "soundsystem" and something could be done with .asoundrc -file, but nothing seems to work. So I´d appreciate specific help for what to put on .asoundrc and then how to set XBMC´s audio settings (audio output and passthrough -device).

There´s also no navigation sounds, are these problems related...?
Odroid C2 running CoreElec
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#2
try changing the setting within xbmc. It sounds like you have something enabled that your amp doesn't decode
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#3
Did some extensive research, and situation is not as bad as I thought.

The problem occurs only with some lower quality youtube videos and one item in my video-library. This video has mp3, 24000hz, 2channels, s16, 56kb/s audio. Compared to my other videos the sample rate in this one is quite low, and also when looking at youtube, the videos with sample rate under 44100hz and stereo don´t give any sound but higher will. Mono 44100hz doesn´t work also.

Is it just so that my receiver doesn´t understand this low sample rate and the sound won´t play?

My audio output settings at XBMC:
Audio output: HDMI
Speaker conf 5.1
Boost vol level on downmix X
AC3 capable receiver X
DTS capable receiver X
Audio output device: HDA NVidia hdmi
Passthrough output device: HDA NVidia hdmi

Receiver Sony STR-DA3200ES with HDMI 1.1 taking multichannel LPCM just fine.
Odroid C2 running CoreElec
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#4
I have this same issue with some 24000hz audio ove HDMI too. Did you resolve your issue?
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#5
newb2linux Wrote:I have this same issue with some 24000hz audio ove HDMI too.

OK, so I've played around with ALSA a lot over the past couple of weeks but I'm no means an expert - ymmv!

From looking at the various config files this spec won't play over PCM by default. You can make it play by creating a custom .asoundrc or /etc/asound.conf file and adding a processor to upsample the recording to, say, 48K - not trivial but not impossible. I suggest looking at the documentation at http://alsa.opensrc.org/index.php/.asoundrc#Plugins as that has details about how to define a plugin to do what you want. Good luck!
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#6
It would be helpful to share what you did rather than telling everyone that you got it working and to go figure it out for themselves.
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#7
gsgleason Wrote:It would be helpful to share what you did rather than telling everyone that you got it working and to go figure it out for themselves.

Actually I didn't do anything. I was reading the ALSA documentation to find out how to configure it and realised that I didn't need to use the config files as I wasn't doing anything unusual - the defaults would do what I needed for my setup. As such I have no files, configs, changes to share. What I learnt was that this is possible by creating such mappings etc. in these files for purposes such as this.
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[LIVE] Dharma2 - ION2 -o HDMI - no sound in certain videos0