[Kdenlive-devel] Kdenlive + mlt + FreiOr startup bug

[jb]

On Friday 24 October 2008 20.54:36 Marco Gittler wrote:
> i could commit the patches self, but i want to collect first all yml
> files
> for plugins, that have a min/max value (and do without crash), so
> that the patch solves all known bugs with frei0r and mlt.

Hi Marco.

A few infos + some questions:

1) Some info on frei0r plugins.

I made some quick tests and here are the min and max values that work well for 
me (no crash):

* frei0r.squareblur effect :
Kernel size needs to be between 0 and 0.5

* frei0r.distort0r:
Amplitude between -1 and 1
Frequency between -2 and 2

2) Some effects, like frei0r.colordistance need a color as input parameter. I 
couldn't find a way to pass the color to frei0r. I tried with;
inigo video.mpg -attach frei0r.colordistance "Color=#ffcc00"

But the color value is not recognised... any idea ?

3) Keyframes
Currently, all frei0r effects parameters are fixed. For example, the 
frei0r.brightness takes a "Brightness" value that is fixed.

But I guess we could manage to create keyframes, for example if we set:
start_Brightness = 0
end_Brightness = 1

The MLT frei0r module could interpolate the current brightness value from the 
producer position and make the "Brightness" value change with time...

Do you think it is possible ?

Thanks & regards
jb