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It could get cumbersome to change the Post_Scene_Command every time you changed scene names. POV-Ray can substitute various values into a command string for you. For example:
Post_Scene_Command=tga2gif -d -m %s
POV-Ray will substitute the %s with the scene name in the command. The scene name is the Input_File_Name or +I setting with any drive, directory and extension removed. For example:
Input_File_Name=c:\povray3\scenes\waycool.pov
is stripped down to the scene name waycool which results in...
Post_Scene_Command=tga2gif -d -m waycool
In an animation it may be necessary to have the exact output file name with the frame number included. The string %o will substitute the output file name. Suppose you want to save your output files in a zip archive using the utility program pkzip. You could do...
Post_Frame_Command=pkzip -m %s %o
After rendering frame 12 of myscene.pov POV-Ray would shell to the operating system with
pkzip -m myscene mysce012.tga
The -M switch in pkzip moves mysce012.tga to myscene.zip and removes it from the directory. Note that %o includes frame numbers only when in an animation loop. During the Pre_Scene_Command and Post_Scene_Command there is no frame number so the original, unnumbered Output_File_Name is used. Any User_Abort_Command or Fatal_Error_Command not inside the loop will similarly give an unnumbered %o substitution.
Here is the complete list of substitutions available for a command string.
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Output file name with extension and embedded frame number if any |
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Scene name derived by stripping path and ext from input name |
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Frame number of this frame |
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Clock value of this frame |
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Height of image in pixels |
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Width of image in pixels |
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A single % sign. |
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