Each script command refers to an hscript command which will be run, regardless of the expression language selected for the parameter. The resulting string will be run as an hscript command.


It is possible to use the Python, Unix or source hscript commands to perform complex processing.

The commands are always run when rendering occurs. The command checks the parameters of the output driver when it is rendering a range or sending output to a command.

Before the render occurs, Houdini will automatically set the current hscript directory to point to the output driver.


This command is run before any renders are completed. It is only run once per render.


This command is run before each render.


This command is run after each render.


This command is run one time after all the renders have finished.

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