Teradek User Guide

Encoder

Updated

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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