D*AP8 MAP
53
Encoder
Encoder 1 (similar applies to Encoder 2 accept from setup where
both encoders are used for associated services).
Encoder Mode
[Dolby Digital plus, Dolby Digital, Dolby Digital Puls HE-AAC v1,
Dolby Digital Pulse HE-AAV v2, Dolby Digital pulse AAC]
Here you may select the encoding format for the respective encoder
Bitstream Packing Format
AAC encoded bit-streams may be packed in different container
formats. This parameter allows you to select one from the many
possible formats.
Encoder Status
[OK, Fail]
Encoder Configuration
[2 (two-channel), 5.1 (surround)]
Data Rate
The data rate that is used for encoding
Latency compensation
[ON / OFF]
For parallel encoding of different formats the same latency may be
desirable. In this case both encoders will have the same latency of
305ms. If you turn latency compensation OFF, latency will be reduced
to 135ms for Dolby Digital.
Metadata Program Select
[Program 1 … Program 8]
Here you can select a program number of the RDD6 metadata set that
shall be used for consumer encoding. If you are about to encode a 5.1
program that comes with a Dolby E stream as program 1, you must
select Program 1 here.
Metadata Bitstream Status
[Metadata valid, Metadata not present]
Dolby D+ Parameters
Stream Type
[Independent, Dependent]
The streams which are encoded by both encoders can either be
independent (i.e. there is no signal relationship of the audio signals)
or dependent (if you use both encoders to encode 8 audio channels for
7.1 encoding).
Stream Multiplexing
[OFF (Dual PID) / ON /Single PID]]
Substream ID
[1, 2, 3]
Since the encoded streams can be multiplexed by an on-board
multiplexer they must have individual (sub-) stream IDs,
so a de-multiplexer "knows" which data belong to which stream.
If there is no intention to multiplex them together, the MAP sets both
IDs to "0".
Audio Description
Audio description service employs both encoders to allow for the so
called receiver mix. I.e. the mix between the program sound and the
narrator who performs the audible scene description can be done in
the decoder. This saves a lot of audio bandwidth compared to the so
called broadcast mix, where two independent audio mixes are
transmitted to the receiver at home.
Mixing Metadata Enable
[ON / OFF]
External Program
[-50 … 0 … 12]
Scale Factor
To remote control the mixing of associated services you can change
the level of the main program with this parameter.
