moggsplit(1): split Ogg logical streams

NAME

--extension: Use the supplied extension when generating new files; the default is ogg.
--pattern: Use the supplied pattern when generating new files. This is a Python keyword format string with three variables, base for the original file's base name, stream for the stream's serial number, and ext for the extension give by --extension. The default is %(base)s-%(stream)d.%(ext)s.