Teradek User Guide


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ART 2U allows you to control various characteristics of the network video stream. Encoder settings can be found by clicking Encoder at the top of the web UI.

Encoder Settings

  • Input - Select the input type of the video (SDI, HDMI, or Auto)
  • Encoding - 
    • Bit Depth: The Bit Depth setting determines how many bits are used for each color component in a video stream. 8-bit color depth is sufficient for most live streaming applications, while 10-bit color depth is required for HDR workflows or other instances where higher color resolution is required. NOTE: 4K inputs will be streamed at Full HD resolution when 10-bit encoding is selected.
    • Framerate - There are two Framerate modes: Auto and Maximal.
      • Auto: Matches the encoder framerate to the exact figure or a fraction of the input frame rate.
      • Maximal: Increases the framerate to 50 or 60 fps based on input in order to minimize latency.
    • Bandwidth Mode - There are two bandwidth modes: Maximal and Average.
      • Maximal: Sets the absolute maximum bitrate. Typical data rates will be at about 80% of the configured bitrate. Maximal is the default setting.
      • Average: Sets the output bitrate closer to the configured bitrate. 
    • Bitrate Selection - Select your stream’s target bitrate from a list of bitrate figures (List), or manually enter a custom bitrate (Custom). Lower bitrates require less bandwidth and may allow for a more stable stream. Higher bitrates offer better video quality, but require more network bandwidth.
    • Adaptive Bitrate - When enabled, the bitrate will dynamically adjust according to changing network conditions. Adaptive Bitrate only works with one to one encoder/decoder communication and requires the Retry Request setting to be enabled on the decoder.
    • Downscale 4K to Full HD - Can improve visual encoding at lower bitrates.
    • Audio - Enable or Disable Audio Bitrate and Audio Channels selection
    • Audio Bitrate - Select from a list of audio bitrates.
    • Audio Channels - Select Mono, Stereo, or any other audio format from a list of channels.
  • Stream Settings - 
    • Encryption Passphrase: Set a passphrase to access or receive stream
    • Client Mode (Caller): When enabled, the encoder streams to an ART decoder or Helios ART cloud server.
      • Hostname/Host IP (Client mode only): Enter the IP address of the decoder or Helios ART cloud server the encoder will be streaming to.
      • Host port Client mode only): Enter the specific port the encoder will be streaming to.
      • Listening Port (Client mode only): Set this port to 0 to let the Encoder auto select a listening port. If the Decoder is also set to Client Mode (Rendezvous configuration), then set this port to a non-zero value and set the Server Port on the Decoder to match this port setting.
      • Multicast (Client mode only): Enable or Disable multicast streaming (Server sends signal to multiple end points instead of just one). Client Mode must be enabled.
    • Server Mode (Listener): When enabled, ART waits for the client to initiate a connection and pull the stream from it.
    • Listening Port: Designate a port to pull the stream from.
    • Max Client Connections: Specify the maximum number of decoders allowed to simultaneously connect to the encoder. NOTE: To use Retry Requests for packet recovery and Adaptive Bitrate, Max Client Connections should be set to 1.
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