[PD] live pd patch mixed with Gem or pdp?

ydegoyon at gmail.com ydegoyon at gmail.com
Mon Aug 30 18:40:11 CEST 2010


pdp_capture was working once with an old version of ImageMagick
but anyway it was too slow,
so now its compilation is made optional,
it is a bit abandonware..

use webcamstudio instead ( http://www.ws4gl.org/ ),
it does the same as gstreamer that Iohannes recommends,
but with an interface...
it will output the screenshots to a vloopback device ..

about the disposition on the screen, no eye deer ..


John Harrison wrote:
> is there a way to do these screenshots such that they don't actually 
> show up on a screen visible to the user i.e I don't have to show the 
> raw Pd patch to the user, only the mix? This is a 2-headed machine 
> (one machine --- I'll use 2 if I absolutely have to) and the plan is 
> to show a Gem or pdp window fullscreen on one head and a pdp window 
> fullscreen on the other. This leaves me not sure where to put the Pd 
> patch for the screenshots.
> On Mon, Aug 30, 2010 at 10:44 AM, IOhannes m zmoelnig <zmoelnig at iem.at 
> <mailto:zmoelnig at iem.at>> wrote:
>     On 2010-08-30 17:04, John Harrison wrote:
>     > I'd like to take a patch from a pd window and mix it live with a
>     Gem or pdp
>     > window. pdp_capture would have been the ticket, but I can't get
>     it to
>     > compile and looking at the archives of this list, it doesn't
>     seem like
>     > others have had luck with it either. Any other ideas for me?
>     >
>     a bit complicated, but you can do that by doing screenshots with
>     gstreamer, send it to a videoloopback device and read that (with pdp,
>     Gem, GridFlow or whatelse)
>     - get v4l2loopback (http://code.google.com/p/v4l2loopback/)
>      compile, install, load the module
>     - get gst-v4l2loopback (http://github.com/umlaeute/gst-v4l2loopback)
>      compile (need gst-plugin-base-dev), install
>     run the gstreamer-pipeline, e.g.
>     $ gst-launch ximagesrc use-damage=false startx=0 starty=0 endx=640
>     endy=480 ! queue ! ffmpegcolorspace ! v4l2loopback
>     access the video using [pix_video], [pdp_v4l2] [#camera] or cat
>     running here.
>     this of course only grabs a portion of the screen, rather than a
>     window
>     and track that...
>     fgmadfs
>     IOhannes
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