ImmediaTV ITV-IP360c, Руководство пользователя

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
Language Code: This parameter represents the 3-letter ISO 639-2 language code for the
audio, to be placed in the audio language descriptor in the PMT. For a complete list of
the language codes, see this URL:
http://www.loc.gov/standards/iso639-2/php/code_list.php
If the Output Protocol in the Encoder Output Tab is set to RTMP, this field will not be
displayed as RTMP does not use the transport stream container.

Audio Encoding: This parameter selects the audio encoding algorithm. The available
choices depend on the Audio Source selection. For Analog Audio , the choices are
MPEG-1 Layer II and AAC-LC . For SDI Embedded Audio, the Dolby Passthrough
option is offered in addition to the previous choices . Note that AAC-LC requires
additional licensing. The two variants for this control are depicted below.
If the Output Protocol in the Encoder Output Tab is set to RTMP, this field is forced to
AAC-LC and becomes not editable. The reason is that the RTMP protocol has no
support for MPEG-1 Layer II audio at 48 kHz sampling. It also has no support for Dolby.

Mode: The available choices for this parameter depend on the Audio Encoding selection,
as follows:
o
MPEG-1 Layer II : the available modes are Stereo or Single Channel . If you
select Single Channel (Mono), only the audio connected to the Left input will be
encoded.
o
AAC-LC : the available modes are Stereo, Mono , or Dual Mono . If you select
Mono , only the audio connected to the Left input will be encoded.
o
Dolby Passthrough : This parameter is not displayed.

Audio Bit Rate: The format of this parameter is a function of the Audio Encoding
setting. For MPEG-1 Layer II, this parameter is a drop-down list of valid discrete bit
Group SD-SDI DID HD-SDI DID
Group 1 0x2FF 0x2E7
Group 2 0x1FD 0x1E6
Group 3 0x1FB 0x1E5
Group 4 0x2F9 0x2E4