[gstreamer-bugs] [Bug 564019] Downmixing 5.1 -> stereo does not anymore include LFE channel information

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | don't know | Ver: 0.10.21

timo.jyrinki at hut.fi changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW




------- Comment #5 from timo.jyrinki at hut.fi  2008-12-11 11:45 UTC -------
The analog output is what used to work before. Now it doesn't give me the LFE
in the downmix anymore. I'm using GStreamer set to ALSA in
gstreamer-properties, with no pulseaudio installed.

So I frustrated with the diminishing options to get proper 5.1 -> 2 downmix. I
have an asound.conf with proper pcm.51to20 device, but also that cannot be
specified for GStreamer (at least not in gstreamer-properties), only to Xine or
MPlayer. Since I really like GStreamer (and totem) otherwise, I purchased an
SPDIF card to try out, but unfortunately it's even worse with GStreamer - I
hear nothing using GStreamer output.

I included a log file using also that digital output, but unfortunately Totem
set to Stereo because pass-through cannot be really selected (I now found the
bug - it's bug #331875). I tried also 5.1 and other selections. I don't get
anything through the speakers using Totem (GStreamer) or even Rhythmbox. The
only place I do get sound out from the digital output using GStreamer is
gstreamer-properties test signal, where I've explicitly selected the Digital
device. I have no idea why the actual applications produce nothing. Xine,
MPlayer etc. play fine, even totem-xine using any speaker selection though
pass-through is the recommended one.

I'm currently using totem-xine since it gives me LFE via the digital route for
the amplifier to down-mix when using Pass-Through, and also with plain xine and
mplayer I'm able to use the mentioned 51to20 alsa output device. The only thing
that now sucks is that I'd want my GStreamer back some day, and now that I have
the digital output, preferably with that :O

(btw, I mentioned testing 5.1 in the original text - in that case I meant only
analog 5.1 output, but I really don't have even enough wires for it currently)


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