[Bug 619035] Amiga Modules (XM/MOD/IT/S3M) do not play in stereo

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=619035
  GStreamer | gst-plugins-bad | 0.10.18

--- Comment #9 from Krzysztof Krakowiak <krzysztof.krakowiak at gmail.com> 2012-02-05 19:31:48 UTC ---
(In reply to comment #6)
> You (IIRC) mentioned on IRC that you were seeing something else that needed
> fixing, can you shed some light on this, or can this be closed as fixed ?

Hi,
Sorry for not replying so long.

This bug is fixed when converting to MP3, but there is other general bug in
gstreamer that causes files to be mono when converting to Ogg Vorbis from some
audio formats
-- cut here --
<v^> It might be that Vorbis chooses 1 channel in preference. See
https://bugzilla.gnome.org/show_bug.cgi?id=590361
...
<evil_core> v^: "Elements should not use 
<evil_core> gst_structure_fixate_field_nearest_int()"
<evil_core> elements are decoder, like what I was playing and those fixation's
functions should be removed totally?
<v^> evil_core: it is needed if vorbisenc and decodebin have no common format.
As for _fixate, I did not know it should not be used by elements. Maybe look at
the plugin history to see if it replaced some other code.
<evil_core> v^: vorbisenc doesnt have "channels" parameter :/
<v^> I does. It's wrong though, IIRC it's 255 max, and it says 256.
<v^> Oh, it's in caps, not as a property, in case you meant this.
-- cut here --

You can test it using mine shell script:
http://carme.pld-linux.org/~evil/varia/pgmc

Or run directly:
/usr/bin/gst-launch-0.10 filesrc location=01-Intro.it ! decodebin !
audioconvert ! audioresample ! vorbisenc name=enc quality=.3 ! oggmux !
filesink location=./01-Intro.ogg

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