How to set a volume property in audiomixer's sink pads?

[Natanael Mojica]

Thanks Michael

I tried your recomendation but that not work, example:

GObject *pad
=G_OBJECT(gst_element_get_static_pad(audiomixer,
sink.toUtf8().constData()));

then:

        g_object_set(pad, "volume", x,NULL);

and in running time I get this error:

              g_object_set: assertion 'G_IS_OBJECT (object)' failed

and if in another way:

g_object_set(gst_element_get_static_pad(audiomixer,
sink.toUtf8().constData()), "volume", x , NULL);

dont work ., getting same error message

So, whats is the correct way to do that??
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