This command selects the audio language, subtitle language, or the video angle for a menu language or video playback by defining the appropriate stream number as the current stream. The stream number can be specified as one of the following:

1) a 6-bit constant value, or
2) from the content of a GPRM register.

SetSTN can be present only in the VTS or VTSM domain.

Set Audio/Subpicture/Angle Stream
Select value from a GPRM register Set audio stream to 1 2 3 4 5 6 7 8     or from   GPRM0 GPRM1 GPRM2 GPRM3 GPRM4 GPRM5 GPRM6 GPRM7 GPRM8 GPRM9 GPRM10 GPRM11 GPRM12 GPRM13 GPRM14 GPRM15 Subtitle stream to 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 63     or from   GPRM0 GPRM1 GPRM2 GPRM3 GPRM4 GPRM5 GPRM6 GPRM7 GPRM8 GPRM9 GPRM10 GPRM11 GPRM12 GPRM13 GPRM14 GPRM15 Force subtitle stream on Set video angle to 1 2 3 4 5 6 7 8 9     or from   GPRM0 GPRM1 GPRM2 GPRM3 GPRM4 GPRM5 GPRM6 GPRM7 GPRM8 GPRM9 GPRM10 GPRM11 GPRM12 GPRM13 GPRM14 GPRM15
DVD Command	Hex Encoding
SetSTN	51 00 00 00 00 00 00 00

This command can be combined with the Compare GPRM operations for conditional branching. When combining, this command is executed only if the result of the comparison is true.

1) Compare to another GPRM register and SetSTN
2) Compare to another SPRM register and SetSTN
3) SetSTN and Link