I am able to create the artwork films using axlDBCreateFilmRec, How to get control on artwork general parameter settings?
I want to change the 'Device type' 'Error action' 'output units' etc
I didn't find any axl command for this.
Since you're using 15.7 some parameters have changed and new parameters has been added. There could also be a difference in syntax, I would recommend that you record a script in 15.7 running over all the parameters.
Then compare your script file with the stuff in the skill code and adjust accordingly.
Or even better start using 16.6, there's so much more good stuff that it will be worth it.