Audio Encoder Settings

The following table lists the Audio Encoder controls and settings:

Input Parameters

Audio Encoder Setting

Default

Description/Values

Input

SDI1 (1-2)

Select the Audio Input for the encoder.

SDI1 (1-2). . (15-16)
SDI2 (1-2). . (15-16)
SDI3 (1-2). . (15-16)
SDI4 (1-2). . (15-16)

Analog (Makito X4 Rugged only)

Basic Parameters

Audio Encoder Setting	Default	Description/Values
Channel Mode	Stereo	Select the number and type of audio channels to encode: Stereo Mono-Left Mono-Right
Bitrate	128 kbps	Select the Audio Bitrate for the encoder: Mono: 12 to 288 kbps Stereo: 14 to 576 kbps Note As of v1.4, the Makito X4 allows lower audio encoding bitrates (intended for very limited bandwidth streaming situations), as well as higher quality audio encoding at higher bitrates.
Sample Rate (kHz)	48 kHz	The number of audio samples per second taken from the incoming signal. 48 kHz only.
AAC-LC Algorithm	MPEG-2 ADTS	The audio compression algorithm: MPEG-2 ADTS - Encodes audio using the ISO/IEC 13818-7 MPEG-2 AAC-LC algorithm with an ADTS header. (Default) MPEG-4 LOAS/LATM - Encodes audio using the ISO/IEC 14496-3 MPEG-4 AACLC algorithm with a LOAS/LATM header.
0 dBFS Audio Level (dBu)	+6 dBu	(Analog Input only) Adjusts the maximum analog Audio Input signal level (0 dBfs) from 0 to +6dBU. Note This is useful in applications such as broadcast and streaming to allow higher audio headroom.
Language	n/a	(Optional) To specify the language of the input, start typing letters and select the language from the list. The language values are three-letter codes, defined in ISO 639-2 (https://www.loc.gov/standards/iso639-2/php/code_list.php).
Statistics	n/a	Click the Statistics icon to view statistics for the encoder. See Audio Encoder Statistics.
Mute/Unmute	n/a	Click the Mute/Unmute icon / to turn the selected audio input on or off. A muted stream will encode silence instead of audio input. This may be used, for example when you do not wish to encode the audio but the decoder being used does not support decoding of video only streams.
Stop/Start	n/a	Click the Stop/Start icon / to stop or start an active audio encoder.

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