Cisco D9854 Installation And Configuration Manual page 127

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Digital Out Preference
When Dig Out Pref is set to PCM Samples, the output is PCM regardless of whether
it's MPEG, Dolby Digital (AC-3) or AAC audio. Additionally, when the output is
Compressed, MPEG-1 L1 and L2 will be output PCM, even though Dolby Digital
(AC-3) and AAC is compressed (and transcoded).
Output Input
MPEG LA (MPEG-1 and
MPEG-2)
Dolby Digital (AC-3)
Dolby Digital Plus (E-AC-3)
(Bit rate < 1.5 Mbps)
Dolby Digital Plus (E-AC-3)
(Bit rate > 1.5 Mps)
MPEG-2 AAC, MPEG-4
(AAC and HE-AAC)
Captions
Menu Item
Preferred Mode
Actual Output
PCM Samples
PCM
PCM
PCM
PCM
PCM
Description
Selects the type of closed captioning
to use if there are multiple available
in the stream.
Indicates the actual closed caption
mode in the output. This is read-
only.
Digital Output Preference
Compressed
DDP Mode
Transcode
(Converter)
PCM
Dolby Digital (AC-3)
Dolby Digital (AC-3)
Dolby Digital (AC-3)
MPEG-2 AAC,
MPEG-4 (AAC and
HE-AAC)
Parameters
Auto, SA Custom, EIA 708,
Type 3, Type 4 SA, DVS 053
Type 4 ATSC, Reserved or
DVS 157. The default is Auto.
Note: SA Custom is not
supported when telecine video
coding is enabled.
Auto, SA Custom, EIA 708,
Type 3, Type 4 SA, Type 4
ATSC, Reserved, or DVS 157
Setup Menu
Passthrough
PCM
Dolby Digital (AC-3)
Dolby Digital Plus (E-
AC-3) (no over-
clocking, x1)
Dolby Digital (AC-3)
MPEG-2, MPEG-4
(AAC and HE-AAC)
103

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