[Kdenlive-devel] effects

[Dan Dennedy]

On Tue, Oct 21, 2008 at 10:16 AM, Marco <g.marco at freenet.de> wrote:
> Hi
>
> i wrote the frei0r plugin for mlt.
> The Problem with frei0r is (i wrote richard spindler that too):
> the frei0r plugins does not give back the param range. So some plugins have
> values vom -x to +x, some from 0 to x, and some from x.y to z.a.(double/int ,
> negative/positive)

MLT does not provide something like this either through an API.
Arguably, its not required to be in API.

> A Fix is also not in sight.
>
> Idea: store in an extra file these values (but not so good for new plugins,
> that come later)

For MLT, I designed the metadata system. The system is in place with
API to access it, but the metadata is very much incomplete.

http://mltframework.org/twiki/bin/view/MLT/MetadataRequirements

Something could be made for frei0r as well completely as a wrapper to
frei0r, call it morefrei0r ;-). Then, the MLT module can bridge the
metadata. I know kdenlive has its own effects system, but I have not
looked into its details yet to know what can be done there. I planned
to look into it to learn from its real world experience and perhaps
revise the MLT metadata schema.

-- 
+-DRD-+