MGW Ace Encoder
HEVC Encoding and Streaming Appliance
User Manual, Version 2.1
29
The Channels Page
The Channel section provides a one page view dedicated to channel configuration. The
configuration is done in three steps:
1.
Source
- select the input video and audio sources to be used for the channel.
2.
Processing
–
set the video and audio encoding parameters for the channel as required by
the application.
For easier configuration of the HEVC encoder, a Stream Profile must be selected. For more
information see the
Stream Profiles
(HEVC)
section
below.
3.
Targets
- Define the transport characteristics of the output streams (up to 2 targets per
channel).
Stream Profiles (HEVC):
For easier HEVC channel configuration, VITEC provides a Stream Profile parameter to be set prior
configuring the processing section. The profile is linked to a specific application. Based on the
Stream Profile selected, MGW Ace Encoder automatically configures the internal settings of the
system to get the best HEVC video quality out of the hardware-based encoder. It also configures
typical parameters (such as Audio encoding and latency) based on the application.
•
Broadcast
–
Broadband (default): provides the best video quality streaming without
compromise. Latency is not minimized in this mode as B encoded frames are used. The
application includes: Distribution, Contribution, DSNG (Digital Satelite News Gathering)
within Broadcast, Government, Corporate or House of Worship market.
•
ISR
–
Low Bandwidth: provides best video quality streaming at low bandwidth (typically
below 1.5Mbit/s), and drastically optimizes the encoding latency (no B frames possible in
this mode). This profile also enables efficient video stream error resiliency without using
any error correction technique which would introduce bitrate overhead.
By default, audio encoding is not enabled to minimize the bandwidth. KLV capture and
transmission are available. Application targeted are Situational Awareness, ISR
(Intelligence, Surveillance and Reconnaissance) as well as any application where
bandwidth is very limited.
•
Ultra Low Latency
–
LAN: provides Ultra Low Latency streaming. Paired with MGW Ace
Decoder firmware v2.0, the achieved end-to-end latency is less than 30ms. With other
decoders, 100ms end to end latency is expected.
This mode is particularly well suited for LAN streaming application where latency is key.
