General arguments affecting all functions

All functions log progress and error messages in the log file if you specify one.
To set the logfile use the -o parameter to pass the textfile for logging.
  -o "c:\Your.log"

Jpeg2000 compression settings can be specified in detail by using these arguments which affect all functions that generate Jpeg2000 files.
  -y
Jpeg2000 progression layers affect the storage of the imagedata in multiple quality layers. Use values from 1 to 10.

-q
Jpeg2000 compression ratio which is 1:10 by default. You can pass a value of 100 to get smaller files, due to the great compression technique you will still get high quality pictures. Use values from 1 to 100.