Audio Encoder Settings
The following table lists the Audio Encoder controls and settings:
| Audio Setting | Default | Description/Values |
|---|---|---|
| Input | Select the Audio Input for the encoder. | |
| SDI | Analog |
Note The SDI2 audio inputs are only available on dual-channel systems. Tip For Analog audio, on dual input SDI encoders, you may need to specify the video input from which to derive the audio encoder's STC source (either Auto, BNC1, or BNC2). This is done using the CLI. For details, see “stcif” in audenc. |
| DVI | Analog |
|
| Audio Setting | Default | Description/Values |
|---|---|---|
| Channel Mode | Stereo | Select the number and type of audio channels to encode:
|
| Bitrate | 128 kbps | Select the Audio Bitrate for the encoder:
|
| 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:
|
| 0 dBFS Audio Level (dBu) | +6 dBu | (Analog Input only) Adjusts the maximum analog Audio Input signal level (0 dBfs) from +5dBU up to +20dBU. Note This is useful in applications such as broadcast and streaming to allow higher audio headroom. Tip This parameter specifies the audio level at which full scale is achieved. 5 = Full scale in the coded audio is achieved when a 5 dBu input signal is input at the audio input. |
| Language | n/a | To specify the language of the input, start typing letters and select the language from the list. |
Mute | n/a | Click Mute to encode silence instead of the selected audio input. For example, this may be used 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 Stop to stop an active encoder. Click Start to start or restart a stopped encoder. |
Statistics | n/a | Click Statistics to view statistics for the encoder. See Audio Encoder Statistics. |