Appendix A — General Registry Settings
85
The IBM Audio Registry Table
Audio Input
Input0
Input1
Unsigned
char
Analog = 0
Digital = 1
Inactive = 2
Embedded
Audio = 3
Default: Analog
Audio stream is set to inactive
if it is not being used.
Vela-specific hardware is
required for embedded audio.
PTS Offset
PtsOffset
Int
Always 0
No longer supported.
Audio
Start-up
Delay
AudioDelay0
AudioDelay1
Int
Always 0
Default: 0
Audio start-up delay in msecs.
MPEG Audio
Layer
Algorithm
Unsigned
char
Layer 1 = 0
Layer 2 = 1
Layer 3 = 2
Always 1
Currently only AL_LAYER2(=1)
is supported.
Error
Protect Flag
ErrorProtectFlag0
ErrorProtectFlag1
BOOL
(int)
0 = FALSE
1 = TRUE
Default: FALSE
Refers to a setting in an MPEG
audio header.
NOTE: Use with extreme cau-
tion. A setting of 1 may corrupt
the PTS.
Copyright
Flag
CopyrightFlag0
CopyrightFlag1
BOOL
(int)
0 = FALSE
1 = TRUE
Default: FALSE
Refers to a setting in an MPEG
audio header.
Audio Slave
Mode
WaitOnStartFlag0
WaitOnStartFlag1
BOOL
(int)
0 = FALSE
1 = TRUE
Default: TRUE
To guarantee A/V synchroniza-
tion, should be set to 1 when
both video and audio are being
encoded. Then the audio start is
triggered by the start of the
video encoder.
Original Flag
OriginalFlag0
OriginalFlag1
BOOL
(int)
0 = FALSE
1 = TRUE
Marks stream as original or
copy.
IBM Audio Registry Table (Continued)
Property
Registry Key
Data
Type
Value Set
Comments
Table A-4. IBM Audio Registry Table (Continued)