I could be completely overlooking this one.
Is there a place to set the order of name, frame, and extension? Previous renderers have had the drop-down so that you may switch to name.###.ext, etc.
Just add a # anywhere in the image name ( in the “File name prefix” field) and it will be replaced with the current frame number. If you add more than one #, all will be replaced. You can control the number of leading zeros with the “frame padding” parameter.
Greetings,
Vladimir Nedev