SPRM 18: Initial Language Code for Subtitle
SPRM 18 is the value of the initial subtitle language setting of the DVD player. It is a
preference set by the viewer.
Many feature films that are put onto DVD are subtitled in several languages. By reading
this SPRM, you can preselect the appropriate subtitle stream to the viewer’s preferred
language. In the case of a subtitle menu, you can preselect the appropriate button
As with SPRM 0, these values are derived from a two-letter code for each language spoken.
The code is derived from the lowercase ASCII value of each letter. See
for a complete table of all of these language values.