Bedienungsanleitung Niagara B264 Standalone Encoder (Seite 30 von 120) (Englisch)

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In general, the encoder user interface will change as a function of the parameter selections made,

to remove illegal parameter combinations.

Selections made in any of the encoder configuration screens do not take effect until the Apply

button is pressed. If you wish to discard the changes made to the user interface, press the Cancel

button. The Apply/Cancel buttons are present in all the tabs and will be grayed out until

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 B264 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 B264 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 B264 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

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