[Bf-committers] External effects for VSE and or compositor nodes

[Gaspar Fernández]

Hi!

Again posting about this topic. I know some of you don't find this 
interesting but I do. So I have made a tiny demo. The code is not so 
clean right now, but it works. And I may optimize it a little bit more.

I know the effects in the video are so silly, and some of them can be 
done in a 3D view or the compositor, or working with Curves. it was just 
a demo to integrate MLT effects into Blender. With this I could embed 
some more Just an experiment: https://youtu.be/sJKkSDvwDbE with this I 
could link some more effects.


Saludos
------------------------------------------------------------------------

Gaspar Fernández

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El 13/03/17 a las 05:00, Gaspar Fernández escribió:
> Hi all!
>
> There are only a few effects in Blender for VSE or compositor. I've been
> thinking about that for years. Even I found, in the past Blender used a
> C api to allow external effect plugins
> (https://wiki.blender.org/index.php/Doc:2.4/Manual/Sequencer/Effects/Plugins).
> And don't know why this feature isn't supported now.
>
> Looking for a solution I tried to make my Blender build run image
> filters via Python API but it's very slow (2 frames/sec for a very very
> easy effect, inverting red and blue channels and alpha to 50%), also I
> did not tested using a Python lib so Python will be just calling my C
> lib which does the effect. But I think it may be better making them
> directly in C or C++, I've tested doing the same simple effect in C and
> it's realtime.
>
> I also thought about using a pluggable library for doing this (just
> effects on images or videos), like MLT, where we can add a lot of
> effects and image generators (another very very interesting feature for
> me). It's really difficult to render a strip, apply one effect with
> another program and import the new footage with effect, and sometimes
> animating effect properties or doing little changes is awful repeating
> the whole process again.
>
> What do you think about that?
>
> I've been playing with MLT source, if you think this is interesting I
> think I could make a POC integrating one effect into VSE to see how it
> behaves.
>
> Best regards,
> ------------------------------------------------------------------------
>
> Gaspar Fernández
>
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>
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