[Kdenlive-devel] Questions about audio effects

Hugh Tebby hugh.tebby at gmail.com
Thu Sep 2 09:26:25 UTC 2010

Hi Dan,

I've just moved in a new flat, and have no internet access at home for a few
days. I'll hopefully have it back by this week-end.

Just one thing : you said to use the mbeq 1197 ladspa plugin for the
equalizer in order to get more frequencies, but from what I remember it's
already that plugin that is used. I quickly tried to add new sliders in the
xml file (and modified a related piece of code) with no success, only the
three first sliders had an effect. I'll check again, maybe I got the plugin
name wrong or something.


2010/9/1 Dan Dennedy <dan at dennedy.org>

> On Wed, Sep 1, 2010 at 12:31 AM, Dan Dennedy <dan at dennedy.org> wrote:
> >>>> - Gain: expecting dB instead of %, should be under "audio correction"
> >>>> folder
> >
> > The underlying mlt filter does accept a dB value, but I just had to
> > commit a change to let it accept negative values for db. However, if
> > we change it, then existing projects will have insane dB values
> > without doing some document conversion stuff, for which I think we are
> > out-of-time (I do not know anything about that).
> I was just editing normalise to use dB when I realized MLT requires
> that you suffix the value with "dB" otherwise it is interpreted as
> float (%), but Kdenlive effects XML system has no way to add that
> suffix. (It has a suffix it can display as a label in UI, but that is
> not added to the value passed to MLT.)
> --
> +-DRD-+
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