[PD] pushing gem pix_video I/O

[Johnny Mauser]

Hi marco,

There is a new version of mxwendler mediaplayer software. First time also
on linux, and i think for advertising reasons on linux two years free. It
can freeze cams.
Maybe this is interesting for you.

Best

-jonas

Marco Schretter <mco at zimt.at> schrieb am Fr., 17. Apr. 2020, 22:39:

> ok, i changed to a recent macpro and it works flawlessly. so the
> bottleneck was my mbp2013's graphic card.
>
> i still could not find out how to output on the decklink sdi-outs... ?
>
> ideas how to build a cheap tiny linux cam-freeze blackbox welcome.
>
> yrs,
> m
>
> Am 17.04.20 um 02:34 schrieb Marco Schretter:
> > dear all,
> >
> > unfortunately i'm forced to work with a mediaserver that is not
> > capable to do a live-cam freeze. now i'm trying to solve this by
> > building a osc-controlled blackbox with GEM (pix_buffer[read/write]).
> >
> > test-setup:
> > decklink quad 2-8 capturecard
> > https://www.blackmagicdesign.com/de/products/decklink/techspecs/W-DLK-30
> > in sonnet frame
> > macbookpro (2013)
> >
> > this testpatch works ok, but with 500-1000ms latency ...
> > https://zimt.at/cam_freeze_v01.jpeg
> >
> > question:
> >
> > how can i push the latency and make it more "real-time" (whether with
> > pix_buffer or several pix_buffers or other objects)
> >
> > do you have experience how to push the GEM output to the decklink
> > sdi-out? i guess the rendering is done on the graphics card and not on
> > the decklink (?not openGL capable?) so mabe this is useless? so is the
> > macbookpro graphic card the bottleneck?
> >
> > merci
> > marco
> >
> >
> >
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