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How to instal OpenFX plugins?

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parrtizan
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Hi, does anyone have any successful experience installing OpenFX plugins in Copernicus?

I tried installing several different releases of OpenFX, but I had problems with compilation, or Houdini simply did not respond when I added plugins to the OFX folder.

I am most interested in this plugin library: https://github.com/NatronGitHub/openfx-misc [github.com] Maybe anyone managed to install it?
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parrtizan
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Okay, I managed to install the Sapphire plugins from their launcher. During installation, all libraries are immediately placed in C/Program Files/Common/OFX. There are a bunch of cool effects that work in Copernicus.

Now I'm trying to figure out how to connect third-party open source libraries.
Edited by parrtizan - Aug. 23, 2025 11:40:12

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JustinCrapse
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I installed the demo for Sapphire. The plugin shows up in C:\Program Files\Common Files\OFX\Plugins, but nothing is showing up in Houdini Copernicus.

My system environment variables:
OFX_PLUGIN_PATH = "C:\Program Files\Common Files\OFX\Plugins"
HOUDINI_DISABLE_OPENFX_DEFAULT_PATH = 0

Am I missing something?

EDIT: So I fired up Houdini 20.5 and it worked. Still does not work in Houdini 21.
Edited by JustinCrapse - Oct. 22, 2025 21:16:09
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abigailb
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JustinCrapse
I installed the demo for Sapphire. The plugin shows up in C:\Program Files\Common Files\OFX\Plugins, but nothing is showing up in Houdini Copernicus.

My system environment variables:
OFX_PLUGIN_PATH = "C:\Program Files\Common Files\OFX\Plugins"
HOUDINI_DISABLE_OPENFX_DEFAULT_PATH = 0

Am I missing something?

EDIT: So I fired up Houdini 20.5 and it worked. Still does not work in Houdini 21.

that should be enough to get Houdini to look for OpenFX plugins. can you see if there are any errors on the console?
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JustinCrapse
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No errors or console messages. However, I now know it checks the directory after testing a different plugin. This plugin doesn't work in 20.5 or 21, but it does at least show up in both. Sapphire works in 20.5 and doesn't even show up for me in 21.
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ajz3d
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Regarding openfx-misc, on GNU/Linux and H20.5 I installed it by following installation guidelines provided in the README.mdfile:

git clone https://github.com/NatronGitHub/openfx-misc.git
cd openfx-misc
git submodule update -i -r
git checkout Natron-2.5.0
make CONFIG=release BITS=64 CXXFLAGS_ADD=-fopenmp LDFLAGS_ADD=-fopenmp

Then I moved Misc/Linux-64-release/Misc.ofx.bundleto my OFX directory, under Pluginssubdir:

sudo mv ./Misc/Linux-64-release/Misc.ofx.bundle /mnt/res/ofx/Plugins/

The only envar related to OFX that I have set, is OFX_PLUGIN_PATH, which points to /mnt/res/ofx.

I haven't tried it on H21 yet.
Edited by ajz3d - yesterday 14:40:15

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