Cobalt Digital COMPASS 9223-SA Dual-Channel 3G_HD_SD MPEG-4 Encoder Unit User Manual
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9223SA-OM (V2.0)
changes are made. At any given point in time, the currently running encoder configuration can
be inspected in the Encoder Statistics Tab, described later in this document.
Video Input Auto-Detection
The 9223 can be set to auto-detect the video input signal, and self-configure for the incoming
resolution and frame rate. This feature allows the encoder to operate in situations where the
video signal can change over time (for example, at the output of a video switch). The 9223 is
even capable of automatically recognizing whether a signal is SDI or composite, and the video
standard for composite signals.
The following points should be considered when using video input auto-detection:
•
The available output scaling options are limited, since some options are specific to some
input resolutions.
•
If the encoder is not licensed for a given configuration, it will stop encoding if the input
video signal switches to a value that requires this configuration. For example, an SD
encoder configured to output the same resolution as the input will stop if the input signal
switches to HD.
•
If the encoder is configured with auto-detection and SDI embedded audio, it will fall
back to analog audio if it detects a composite video signal. If your input can switch
between SDI and composite, either use analog audio for all signals, or make sure that the
corresponding analog audio signal is present at the encoder unbalanced audio inputs
when the video is a composite signal.
Multiple Audio Support
The 9223 can be licensed to offer up to two additional MPEG-1 Layer II audio channels,
regardless of the number of installed encoders. These additional audio channels can be
associated with the first or second encoder. Moreover, a dual-channel encoder can be configured
as a single-channel encoder with combined audio. The following combinations are supported:
•
Single Channel Encoders: support for 1, 2 or 3 audio stereo pairs, as follows:
o
First stereo pair:
MPEG-1 Layer II, AAC-LC or Dolby Passthrough support
Valid inputs: analog unbalanced audio, SDI embedded (SDI signals only)
o
Second stereo pair:
MPEG-1 Layer II support only
Valid inputs: second analog unbalanced audio, SDI embedded (SDI
signals only)
o
Third stereo pair (only available for SDI inputs):
MPEG-1 Layer II support only
Valid input: SDI embedded
•
Dual Channel encoders: support for 1 or 2 audio stereo pairs per encoder channel, as
follows:
o
First stereo pair:
MPEG-1 Layer II, AAC-LC or Dolby Passthrough support
Valid inputs: analog unbalanced audio, SDI embedded (SDI signals only)