On Mittwoch 08 Februar 2006 21:47, [EMAIL PROTECTED] wrote:
> Andraz Tori wrote:
> > For changing the order of overlays, you could use overlay plugin...
>
> Hi Andraž,
>
> as you are mentioning it....
> Yesterday, I didn't manage to get any visible result by this plugin,
> but I couldn't figure out what exctly it is doing (even by poking into
> the source :-( )
>

Download this project:

http://cvs.cinelerra.org/~j6t/bigtest.tar

(maybe you have to edit the bigtest.xml file to adjust the asset paths).

Load it into cinelerra and go to the first frame (ignore the rest of the 
project). It shows two overlay plugins in action. They implement this 
computation:

output = mask * blur(input) + invert(mask) * input

The Overlay plugins achieve the multiplications in the equation, the addition 
is achieved by setting the track overlay option to "Add".

When I played around with the plugin, I found that the processing option "Top 
first" does not make much sense, because when the data from the "Top" is 
used, it is still from the previous frame.

>  - do I need always to share this plugin between exactly two tracks?

I don't think so, I think it can be any number of tracks.

>  - what does the setting "ouput to top/bottom" mean?

It tells whether the result replaces the data in the top-most or the 
bottom-most of all the tracks where the plugin is shared. I don't know 
whether setting this to "Bottom" is useful.

>  - what happens with the original output of the tracks?

All tracks but the selected output track remain unchanged and enter the usual 
track overlay pipeline.

-- Hannes

_______________________________________________
Cinelerra mailing list
[email protected]
https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra

Reply via email to