[PD] video bluescreen

[bigswift at cox.net]

I did it a few years ago with help from Chris and pix_chromakey

ony has one pick though, lemme find it


pp


Patrick Pagano

Digital Media Engineer
Digital Worlds Institute
University of Florida




On Tue, Feb 3, 2009 at 5:00 PM , mark edward grimm wrote:

> hello...
> i would be interested in this too if anyone has something. i actually 
> was just trying some stuff out with a green screen but did not get 
> very far.
> although i did not play around for long i did have trouble getting the 
> [pix_chroma_key] to work well (or do anything at all for that matter).
>
> i just did something like:
>
> [gemhead 1]
> |
> [pix_video]
> |
> [pix_alpha]
>
> and
>
> [gemhead]
> |
> [pix_film]
>
> ...but im sure there is someone that knows something better optimized 
> for green/blue screen work.
>  
>
> --- On Tue, 2/3/09, Martin Schied <crinimal at gmx.net> wrote:
>
>> From: Martin Schied <crinimal at gmx.net>
>> Subject: Re: [PD] video bluescreen
>> To: "Garrett Lynch" <lists at asquare.org>
>> Cc: pd-list at iem.at
>> Date: Tuesday, February 3, 2009, 2:41 PM
>> Hi,
>>
>> Garrett Lynch wrote:
>>> I'm trying to put together a video bluescreen and
>> I'm just not finding
>>> the right object I think.  pix_multiply sort of does
>> what I want by
>>> dropping out white in a video and replacing it with
>> another video but
>>> how do I get this working with a defined colour (i.e.
>> not necessarily
>>> white but the blue or green normally used in studios).
>>  There seem a
>>> few objects that deal with different ways of mixing images/videos 
>>> pix_mask, pix_mix, pix_composite etc.
>> Which is the
>>> right one to use?  Thanks in advance.
>> [pix_chroma_key] could do what you need. For higher quality
>> results you'll have to use several objects and use some
>> compositing techniques like explained here:
>>
>> http://www.blendedplanet.com/?Freebie_Tutorials:The_Ultimate_Keyer
>>
>> It's for blender3d and probably overkill for your needs
>> but you can use some of its basic principles in GEM too.
>>
>>  - btw has anyone done something like that in pd? I only
>> used it in blender some time ago.
>>
>> cheers,
>> Martin
>>
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