[PD] file format for GEM

[Cyrille Henry]

hello,
Gem is mostly design to work on the GPU, and not on the CPU.
GPU have hundreds of core, they are faster than CPU for image manipulations.

pix_add come from the 20th century and should now be avoid since it use cpu not gpu ;-)

in order to make a fade transition between 2 videos, you can use transparency on one video.
add a [alpha] object after Gemhead, and send number between 0 and 1 in the last inlet of the colorRGB object to make the video appear / disapear.

cheers
c


Le 26/02/2013 21:33, Stephan Elliot Perez a écrit :
> Hello,
>         So, looking at the help file for [pd~], it seems to be primarily for audio. How can I use multiple cores to work purely with GEM?
>          I am trying to have a simple transition between video clips, but if I have two instances of pix_film and then connect them to pix_add, the CPU-ussage skyrockets well above 100... is there a more efficient object for blending two video clips?
>
> Best regards,
> Stephan
>
> On Sun, Feb 3, 2013 at 10:54 PM, Thomas Mayer <thomas at residuum.org <mailto:thomas at residuum.org>> wrote:
>
>     Hi,
>
>     On 03.02.2013 22:48, Stephan Elliot Perez wrote:
>      > I am talking about PD's CPU meter. I don't have the impression that PD
>      > takes full advantage of 2 quad-core processors. When processing audio,
>      > anything over 100 in PD's meter will lead to glitched audio. I am just
>      > wondering if it will be much more when I load other videos and transition
>      > between them.
>
>     Pd will only use one core, and one core for the GUI. There are ways to
>     distribute the load over several cores, e.g. [pd~] or use several
>     instances of Pd that communicate with each others:
>
>     http://www.mail-archive.com/pd-list@iem.at/msg33319.html
>
>     Hth,
>     Thomas
>     --
>     "Spielen Sie Strip Schnipp-Schnapp?" (Adam Weishaupt to Johann
>     Wolfgang von Goethe in: Robert Shea & Robert A. Wilson, The Golden
>     Apple)
>     http://www.residuum.org/
>
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