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rates for the video elementary stream. The peak video bit rate must be between 1.5 and 2
times the average bit rate; the user interface will enforce these limits automatically (i.e., it
will update either the average or peak to be consistent with the value being entered). For
both of these parameters, the resolution is 1000 bits/sec.
Basic Tab – Audio Configuration
Audio Source:
This parameter selects the audio source. The options are
Analog Audio
,
directing the encoder will to use the analog right/left audio channels connected to the
selected rear I/O panel, and
SDI Embedded Audio
, directing the encoder to extract
embedded audio from the SDI input. If the video
Input Source
(see Basic Tab – Video
Configuration) is set to
Composite
, this parameter is grayed out and forced to
Analog
Audio
. It will be selectable only if the video input source is one of the SDI variations, or
if
Video Input Settings
is set to
Auto Detected
. Please note that if the encoder is set to
auto-detect the video input, and it detects a composite signal, the audio selection will fall
back to analog audio regardless of the
Audio Source
settings. When
SDI Embedded
Audio
is selected, additional configuration options become available, as shown below.
Group, Channels:
SDI embedded audio is typically divided into four groups (denoted by
Group 1 to Group 4); each group has four mono channels (2 stereo pairs), denoted by
Channels 1-2 and 3-4. These controls allow the selection of the desired group and
channel pair. In the large majority of the cases, the first stereo pair is in Group 1,
Channels 1-2, the second stereo pair is in Group 1, Channels 3-4, and so on. The
Group
selection has one additional choice, labeled
Custom DID
. This allows the encoder to use
a non-standard embedded audio DID (this quite uncommon). If
Custom DID
is selected,
a new configuration option becomes available, where the DID value can be entered:
Group DID:
Enter the desired Group DID, in hexadecimal. Note that the entry will be
immediately validated and rejected if invalid. As a reference, the table below contains
the standard DIDs built into the system for Groups 1 to 4.