[PD] pushing gem pix_video I/O
Marco Schretter
mco at zimt.at
Fri Apr 17 02:34:48 CEST 2020
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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