Syntax:

byextension = <integer> ;

Option:

-B <by>

Range:

Unbounded integer.

Default:

Rounded down integer from byframe, and if that value is 0, byextension is set to 1.

Purpose:

To determine the pix file skip extension factor.

Comments:

This is used in conjunction with startextension and extensionsize to label the output pix files with a different extension from the frame number. If the value given to byextension is a float, it is rounded to the nearest lower integer.

Example:

byextension = 2;