Audio configuration basic tab – mpeg-1 layer ii – Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder User Manual
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Each of the
Group/Channels
selectors operate as described above. The channels are
identified as follows:
o
L/R:
Left/Right
o
C/LFE:
Center/Low Frequency Effects
o
Ls/Rs:
Left/Right Surround
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:
If the Output Protocol in the Encoder Output Configuration 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 choices are
MPEG-1 Layer II,
AAC,
Dolby, SMPTE-302M LPCM,
or
Dolby Pass-through.
Note that some options require additional licensing. If the Output Protocol in the
Encoder Output Configuration 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 or LPCM.
Audio Configuration Basic Tab – MPEG-1 Layer II
The MPEG-1 Layer II parameters are shown below.
Mode:
the choices are:
o
Stereo:
standard stereo encoding.
o
Mono:
mono encoding. The encoder only uses the left channel.
o
Dual Channel:
works exactly the same as Stereo, but channels are internally
labeled as 1 and 2 instead of Left and Right.