In this dialog you can control the output settings: Double Buffering and name of video file.
The file is recorded when using the video camera button of the Polar Plot toolbar (the latter can activated in the Popup Menu by right-clicking on the Polar Plot)
Double Buffering is a special drawing technique, that allows flicker-free animations. Double Buffering is only used if the plot control is active.
The video file name is the name of the AVI-file used for generation of video output from the plot.