Re: [Rhythmbox-devel] [ANN] Rhythmbox plugin for pitch and tempo control

[Willem van Engen <gnome willem engen nl>]

On Sat, 2008-09-13 at 15:29 +0200, eric casteleijn wrote:
> Very cool! I'm thinking of using echonest's analysis data to have
> smooth automatic beatmatching and mixing of songs, and this is an
> excellent first step to achieving that! I'll be sure to look into it,
> and the the scaletempo libraries!

Nice idea! There is also a BPM detection GStreamer element (in the
soundtouch plugin, which also contains pitch). And I do remember a patch
that adds support for the ID3 BPM tag
  http://bugzilla.gnome.org/show_bug.cgi?id=454889
But different segments in one song is a whole different thing of course.

> When I install the plugin, however, I get:
> 
> Traceback (most recent call last):
>    File "/home/eric/.gnome2/rhythmbox/plugins/scaletempo/__init__.py", 
> line 127, in activate
>      self.scaler.activate(shell.get_player().get_property('player'))
>    File "/home/eric/.gnome2/rhythmbox/plugins/scaletempo/__init__.py", 
> line 86, in activate
>      self.gstelement = gst.element_factory_make('pitch', 'pitch0')
> gst.ElementNotFoundError: pitch
> 
> I *do* have gstreamer-plugins-bad installed, but maybe Ubuntu Hardy has 
> a version that is too old?

Hmm not really, I'm using that too. I did need to rebuild my GStreamer
registry on one box, however, by deleting ~/.gstreamer/registry.*.xml .
The new point release should show an error message instead of
complaining on the console.

Regards,
- Willem