[gstreamer-bugs] [Bug 343471] New: voice removal - karaoke

[GStreamer (bugzilla.gnome.org)]

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GStreamer | gst-plugins-base | Ver: 0.10.7

Summary: voice removal - karaoke
Product: GStreamer
Version: 0.10.7
Platform: Other
OS/Version: All
Status: UNCONFIRMED
Severity: enhancement
Priority: Normal
Component: gst-plugins-base
AssignedTo: gstreamer-***@lists.sourceforge.net
ReportedBy: ***@gmail.com
QAContact: gstreamer-***@lists.sourceforge.net
GNOME version: Unversioned Enhancement
GNOME milestone: Unspecified


for use in amarok: a great music library player that supports gstreamer, as
well as downloads lyrics to every song you play, A GREAT Karaoke plugin (voice
removal) plugin is in-demand. One that takes away vocal frequencies without
destroying the audio of the song.

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GStreamer | gst-plugins-bad | Ver: 0.10.7


Tim-Philipp Müller changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|gst-plugins-base |gst-plugins-bad
Ever Confirmed|0 |1
Summary|voice removal - karaoke |REQUEST: voice removal
| |filter (for karaoke)

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GStreamer | gst-plugins-bad | Ver: 0.10.7


Christophe Dehais changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com




------- Comment #1 from Christophe Dehais 2006-12-17 18:40 UTC -------
There is a ladspa plugin doing that and it's made available by ladspa-karaoke
element (plugins-good). However, I didn't manage to build a working pipeline
using it...

gst-launch --gst-debug-level=2 filesrc location=song.mp3 ! decodebin !
audioconvert ! ladspa-karaoke ! audioconvert ! alsasink

loops with WARN message (no sound produced):

gst-dsp gstsignalprocessor.c:585:gst_signal_processor_pen_buffer: Pad
ladspa-karaoke0:Right-in already has penned buffer
0:00:04.664787000 5522 0x8082fa0 WARN

then stops after a while.

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GStreamer | gst-plugins-bad | Ver: 0.10.7


René Stadler changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@renestadler.de




------- Comment #2 from René Stadler 2006-12-17 19:35 UTC -------
This is due to how LADSPA elements work: They only process one channel per pad.
The karaoke element needs stereo, so you need to split the input channels
(deinterleave) and link two pads for input and two pads for output to make use
of it. The (de)interleave elements are not ported to 0.10 yet, however.

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GStreamer | gst-plugins-bad | Ver: 0.10.7





------- Comment #3 from Christophe Dehais 2006-12-17 23:43 UTC -------
I though that was something like that. Pads number for each elements simply
does not match.

I tried to surround the filter like this:
... ladspa-split ! ladspa-karaoke ! ladspa-mixer ...
It didn't help either but I guess I'm missing something.

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GStreamer | gst-plugins-bad | Ver: 0.10.7

Wim Taymans changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@gmail.com




------- Comment #4 from Wim Taymans 2008-05-27 10:29 UTC -------
I checked in the audiovoice plugin in -good but I have some other algorithm
that mght give better results.

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GStreamer | gst-plugins-bad | Ver: 0.10.7

Sebastian Dröge changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |***@circular-chaos.org




------- Comment #5 from Sebastian Dröge 2008-05-27 11:59 UTC -------
Where can one get the ladspa karaoka plugin btw? Would be nice to get the
gstreamer ladspa wrapper working with it ;)

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GStreamer | gst-plugins-bad | Ver: 0.10.7




------- Comment #6 from Sebastian Dröge 2008-05-29 10:25 UTC -------
Ok, found it... things are playing at least with

gst-launch-0.10 -v filesrc location=/path/to/file ! decodebin ! audioconvert !
"audio/x-raw-float,channels=2" ! deinterleave name=d ladspa-karaoke name=k
interleave name=i ! queue ! audioconvert ! alsasink d. ! queue ! audioconvert
! k. d. ! queue ! audioconvert ! k. k. ! queue ! audioconvert ! i. k. ! queue
! audioconvert ! i.

...but at a far too high speed.

Whatever, this looks more like a bug in the gstreamer ladspa plugin... can this
bug here be closed now that we have a voice removal element (it was renamed to
audiokaraoke btw).

["GStreamer" (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=343471
GStreamer | gst-plugins-bad | 0.10.7

Stefan Kost (gstreamer, gtkdoc dev) <ensonic> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |***@sonicpulse.de
Resolution| |FIXED
Target Milestone|HEAD |NONE

--- Comment #7 from Stefan Kost (gstreamer, gtkdoc dev) <***@sonicpulse.de> 2011-05-27 08:49:03 UTC ---
We do have the audiokarakoke plugin in good since quiet a while.