gem-plugin-v4l2 - 1:0.94-1 main

Gem is a loadable library for Pure Data (Pd), which adds OpenGL graphics
rendering and animation to Pd. Pd is a graphical programming language and
computer music system.
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This package provides video input and output using V4L2.
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For video output, you might want to use a loopback device, for which you will
have to install the v4l2loopback kernel module as well.