A plug-in for Quartz Composer for receiving Open Sound Control messages using the UDP protocol.

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The plug-in was created because there seems to be a problem with the built-in OSC receiver in QC in that it sometimes outputs 0’s instead of the last received numeric value, causing something best described as “stuttering” when used for visual output.

Additionally the plug-in automatically creates its outlets when receiving messages and advertises its input port via Zeroconf (otherwise know as Bonjour in Apple-land.)



Put the plug-in file (qcOSC.plugin) in either of these directories:

~/Library/Graphics/Quartz Composer Plug-Ins
/Library/Graphics/Quartz Composer Plug-Ins


  • Drag a qcOSC instance into your composition
  • Open the "Patch Inspector", go to Settings
    and enter a Port number for the plugin to listen on
  • Send OSC messages
  • Enjoy