On Tue, Apr 21, 2015 at 9:28 AM Nisar Ahmed <nisar....@gmail.com> wrote:
> I want to develop a Quartz Composer producer plugin for MLT
> Introduction to Quartz Composer User Guide
> <https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CDQQFjAC&url=http%3A%2F%2Fdeveloper.apple.com%2Fdocumentation%2FGraphicsImaging%2FConceptual%2FQuartzComposerUserGuide%2Fqc_intro%2Fqc_intro.html&ei=tT02VarYAsWdsAHR14FQ&usg=AFQjCNHb37dB3mfewi_t298-oS2qNjULEA&sig2=d4qLGqZBPbtb99zLaXR4GA&bvm=bv.91071109,d.bGg>
>
> Quartz composer is a very good visual development tool for Mac which also
> has a a development API. I want to know whether a QC plugin for mlt is
> feasible and if yes then how do I start developing a plugin?
>
>
It is probably feasible. To get started you need to make a new directory
under src/modules because this will have a different dependency than other
modules. Then, you can copy a Makefile and filter from another module.
Perhaps choose something simple like filter_brightness.c from the core
module. First, get the renamed copy of the filter to build and work and
then starting hacking on it for QC.
Somewhat related are HTML5 tools that use WebGL and accomplish similar
things, sometimes in a similar way, which can be used with the existing MLT
WebVfx plugin. Since you are an OS X user, you might want to checkout Radi
and its integration with the author's Conduit tool:
http://radiapp.com/#effects
Here is a Shotcut HowTo about using OS X-based HTML5 animation tool Tumult
Hype with Shotcut and WebVfx:
http://www.shotcut.org/bin/view/Shotcut/HowToTumultHype
I have been meaning to do one for Radi - have some notes - just have not
yet got around to it.
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