HELO Plus H.264 Streaming and Recording Encoder v1.0 23 www.aja.com
Audio Source
Selects an audio input source from the available audio input connections,
including embedded SDI audio which requires an SDI video source and HDMI
audio, which requires an HDMI video source.
HDMI -
Use HDMI embedded audio as the audio source.
SDI -
Use SDI embedded audio as the audio source (factory default).
Analog -
Use the analog stereo input as the audio source. This selection also
opens an Audio Input Level parameter.
None -
No audio will be recorded or streamed.
Audio Input Level
When Analog is selected above, this parameter becomes available that can be
used to adjust the level of the analog audio input.
• Choose from 0db, +6db, or +12db.
Audio Delay
When Analog is selected as the audio source above, this parameter can be used
to delay the analog audio output by a fixed number of milliseconds relative to the
input.
Closed Captioning Source
Determines the source for closed captioning data. Closed captioning is available
when the video source is an SDI signal. When the video source is HDMI or Test
Pattern, the Closed Captioning Source control is not displayed on the Config
Screen. Select from the following:
None -
Select when you do not want to include closed captioning in the stream
or when closed captioning is not present in the SDI signal (factory default).
Auto -
Select when you want HELO Plus to auto-detect the closed captioning
source.
Ancillary data -
Select when the closed captioning data has been encoded into
the ancillary data of the signal.
Line 21 -
Select when the closed captioning data has been encoded into line 21
of the signal.
AV Mute
Use AV Mute to mute both the video and audio while still maintaining a stream to
the end viewer. Factory default is Off.
For example, you can personalize your pre-stream viewers' experience with your
own program content instead of color bars or black, or replace the outgoing
signal if technical difficulties occur in the studio while on air.
When AV Mute is On, HELO Plus mutes the audio and video from the input signal
and instead shows the selected Video Test Pattern Type along with silent audio.
When AV Mute is Off, in instances when there is no input signal, HELO Plus shows
the selected Video Test Pattern Type along with silent audio.
