OPEN.BIN Stream Opening Movie

00069e60: 27bdffe8 addiu r29,r29,0xffe8
00069e64: afbf0010 sw r31,0x0010(r29)
00069e68: 3c018009 lui r1,0x8009
00069e6c: ac20fc04 sw r0,-0x03fc(r1)
00069e70: 1480000a bne r4,r0,0x00069e9c            if p1 = 0;
00069e74: 3c040001 lui r4,0x0001
00069e78: 3c018005 lui r1,0x8005
00069e7c: ac20e5bc sw r0,-0x1a44(r1)
00069e80: 348453d6 ori r4,r4,0x53d6                FFTST.STR
00069e84: 3405278a ori r5,r0,0x278a
00069e88: 340603df ori r6,r0,0x03df
00069e8c: 0c01a7c9 jal 0x00069f24                  OPEN.BIN Stream FFTST.STR
00069e90: 340702de ori r7,r0,0x02de
00069e94: 0801a7a9 j 0x00069ea4
00069e98: 00000000 nop

if p1 != 0 (not possible?)
00069e9c: 0c01a85d jal 0x0006a174                  OPEN.BIN 0006a174 - 0006a574
00069ea0: 00002021 addu r4,r0,r0
00069ea4: 8fbf0010 lw r31,0x0010(r29)
00069ea8: 27bd0018 addiu r29,r29,0x0018
00069eac: 03e00008 jr r31
00069eb0: 00000000 nop