Here you select what Prism will if you tell it to convert a file to the same format it is already in (ie from avi to avi).
The options are
Delete Source file after conversion
Select this option if you would like the Prism to remove the source file after successful conversion.
Use FFMPEG first
You can setup Prism to use its own built-in codec instead of DirectShow to decode the file. Sometimes it can help to decode files that can't be properly decoded by DirectShow. You will be prompted to download the required codec component from the NCH web site.
Errors
Here you select what to do if an error is detected during the conversion process.
The options are
Duration of the preview
Here you can specify the length of the preview in seconds.
Play sound on completition of the conversion process
Select this option if you want a short sound to be played when the conversion process is finished.
Bring Prism window to front when the conversion process finishes
Select this option to make Prism window popup to front when the conversion process is finished.