From 5.2.1.2 in the 3.5 docs:

Any Final_Frame setting other than -1 will trigger POV-Ray's internal
animation loop. For example Final_Frame=10 or +KFF10 causes POV-Ray to
render your scene 10 times. If you specified Output_File_Name=file.tga then
each frame would be output as file01.tga, file02.tga, file03.tga etc. The
number of zero-padded digits in the file name depends upon the final frame
number. For example +KFF100 would generate file001.tga through file100.tga.
The frame number may encroach upon the file name. On MS-DOS with an eight
character limit, myscene.pov would render to mysce001.tga through
mysce100.tga.

-tgq

Post a reply to this message