hello,

to reduce CPU eating, did you try to put each [pix_video] in a separate pd~ and then send the image to a main patch with [pix_share_*] ?

this could help

I never worked with blackmagic card but it could be possible to add a new backend to [pix_video] to support those cards "natevely" in pd.

+

a

--
do it yourself
http://antoine.villeret.free.fr

2013/9/27 Benjamin ~ 01xy <benjah@free.fr>

Hello,

We are using a blackmagick decklink quad on linux
to get the signal threw pix_video, we use the bmdcapture command line tool combined with ffmpeg so as to write on a virtual video device created by v4l2loopback (cf http://wiki.labomedia.org/index.php/AstroFluxTechnique#bmdcapture_.7C_ffmpeg)

it works fine and it is stable even if we plug/unplug the video sources, it allows us to capture 1080i video or PAL video encapsulated in the SDI signal, but if we try to capture 4x1080i signals, the framerate is less than 25fps as Pd is > 100% CPU

++
Benjamin

Le 27/09/2013 09:21, Etienne Landon a écrit :
Hello list, my first message ! youpi

Regarding Blackmagic on linux you have to use gstreamer through pdgst.

There are two plugins "decklinsrc" and "decklinksink", this is working great !

I think they are in the "bad" plugin set

If this works the same in windows, perhaps you have to fisrt set the mode of the blackmagic before turning gem on. By setting up I mean selecting the appropriate input and video resolution.

And I confirm, never change settings while using it, unplugging the blackmagic input whit gem on freezes my computer

Etienne
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