Teradek User Guide

Decoder Configuration via Encoder (Decode License)

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NOTE: Decoder functionality on the encoder requires a license.

Ingest Settings

  • INGEST MODE - Selects which protocol is used for ingest.
    • MPEG TS
    • SRT
    • TRT (Beta)
    • RIST
    • RTSP
    • RTMP
    • File Playback
    • Generic Streaming URL
    • WHEP (Beta)
  • BUFFER LENGTH - Amount of video (in ms) stored before decode.  Allows the decoder to absorb packet loss or slowness of packets.
  • MAX BUFFER LENGTH - If the video stops due to packets not arriving,  this value is the maximum amount of video storage the decoder can dynamically increase to, to overcome latency.

MPEG TS

  • PROTOCOL (default: TCP)
    • TCP - Listens for video on a specific port using a TCP connection
    • TCP Pull - Pulls video from a specific IP address using a TCP connection
    • UDP - Listens for video on a specific port using a UDP connection
    • Multicast - Pulls video from a multicast address (LAN) and port.

NOTE: Your network must be setup to handle multicast traffic.

SRT

  • CONNECTION TYPE (default: caller)
    • Caller - Decoder initiates the connection to the specified IP address
    • Listener - Decoder listens for the stream
    • Rendezvous -  Both decoder and encoder attempt to connect to each other
  • HOST - Caller and Rendezvous only - IP address or DNS entry that the decoder will attempt to make contact with.
  • PORT - Port that the decoder will attempt call or listen on.  Call is outbound. Listen is inbound.
  • STREAM ID- Customizable identifier that allows routing and identification of individual SRT streams within a single connection or address, often used to direct streams to specific applications or destinations.
  • ENCRYPTION - Turns on the option for Encryption
  • PASSPHRASE - Sets the passphrase (salt) for the encryption key
  • ENCRYPTION KEY SIZE (default: 128 bits) - sets the size of the encryption key. Values corresponds to 16/24/32 bytes.
  • Latency (default: 500) -  The buffering delay introduced to counteract network instability, ensuring smooth, reliable streaming by accommodating packet loss and jitter before reaching the decoder

TRT

The TRT reference manual can be found here

RIST

Teradek is part of the RIST alliance

  • CONNECTION TYPE (default: Client)
    • Client - Decoder initiates the connection to the specified IP address
    • Server - Decoder listens for the stream
  • HOST - Client mode only - IP address or DNS entry that the decoder will attempt to make contact with.
  • PORT (Client or Server) - Port that the decoder will attempt initiate or listen on.  Client is outbound. Server is inbound.
  • ENCRYPTION (Default: off)- Turns on the option for Encryption
  • PASSPHRASE - Sets the passphrase (salt) for the encryption key
  • ENCRYPTION KEY SIZE (default: 128 bits) - Sets the size of the encryption key.  128 bits or 256 bits
  • CANONICAL NAME - Uniquely identifies a device or endpoint in a network, helping distinguish between multiple sources and destinations within a RIST session

RTSP

  • HOST -  IP address or DNS entry that the decoder will attempt to make contact with.
  • RTSP SERVER PORT - Port that the decoder will attempt call.  Call is outbound.
  • STREAM NAME - a unique identifier for a specific media stream on a server
  • AUTHENTICATION - Activates the username and password fields for password protected streams

RTMP

Teradek is part of the RIST alliance

  • CONNECTION TYPE (default: Client)
    • Client - Decoder initiates the connection to the specified IP address
    • Server - Acts as an RTMP server - Decoder listens for the stream
  • HOST - Client mode only - IP address or DNS entry that the decoder will attempt to make contact with.
  • PORT (Client or Server - default: 1935) - Port that the decoder will attempt initiate or listen on.  Client is outbound. Server is inbound.
  • APP-NAME - specifies the application or virtual directory on the streaming server that the client connects to
  • STREAM KEY - unique identifier provided by the streaming platform to authenticate and link a live broadcast
  • AUTHENTICATION - Activates the username and password fields for password protected streams

File Playback

Allows files stored on SD card to be played back live to SDI or HDMI

  • SELECT FILE - Selects file from attached media (SD Card, NFS, or NVME) for playback
  • STREAM NAME - a unique identifier for a specific media stream on a server
  • AUTHENTICATION - Activates the username and password fields for password protected streams

Generic Stream URL

The generic stream url is a flexible streaming URL syntax used to decode many different types of video streams (similar to VLC).  Supported syntax includes  

MPEG TS 'tcp://', 'udp://',

SRT 'srt://',

RIST: 'rist://',

RTMP - 'rtmp://', 'rtmp-pull://', 'rtmp-server://',

RTP / RTSP -  'rtp://', 'rtsp://', 'rtsp-top://','rtsp-udp://', 'rtsp-udp-multi://',  

HLS-DASH 'http://'

  • VIDEO STREAM URL - the url formatted in by protocol and address ie. srt://172.24.100.23:3458

WHEP

WebRTC-HTTP Egress Protocol - Pull based WebRTC over http

  • WHEP Stream URL - Selects file from attached media (SD Card, NFS, or NVME) for playback
  • BEARER TOKEN - authorization token used to authenticate and grant access to a specific media resource

Video Output Settings

  • OUTPUT FORMAT - Displays the video resolution for the encoded video.
  • COLOR OVERRIDE - Allows users to override Color Settings on output
    • EOTF (default: Default) - defines how digital video signals are translated into luminance on screens, ensuring accurate brightness and color reproduction, especially in HDR content.
    • COLORIMETRY (default: Default) - Default, SDR, SMPTE2084, HLG
    • RANGE - (default: Default) - Legal, Full

Audio Settings

DECODE AUDIO (default: TCP) - Enable or Disable

MULTI-TRACK MODE - Enables or disables the multi-track audio configuration (default: disabled).

MULTI-TRACK MODE DISABLED:

  • CHANNEL LAYOUT OUTPUT - Layout of audio for 5.1/7.1 audio
    • SMPTE
    • FILM
    • HDMI
  • EMBEDDED OUTPUT VOLUME - Master Volume for Track
    • TCP Pull - Pulls video from a specific IP address using a TCP connection
    • UDP - Listens for video on a specific port using a UDP connection
    • Multicast - Pulls video from a multicast address (LAN) and port.
  • DELAY - How much delay (in ms) to add to a track.

MULTI-TRACK MODE ENABLED:

  • DELAY - How much delay (in ms) to add to a track.
  • CHANNEL MODE (default: 8 Channels) - How many channels to populate on the digital output.  2,4,6,8,16 channels
  • VOLUME CONTROL - Controls volume output and mute for output channels.
  • CHANNEL SETTINGS - Setting of  Source Track and Source Channel for mapping.
    • Source Track - 1-8 of any type of track.
    • Source Channel - 1-8 of each of those channels (eg mono has 1, stereo has 2, 5.1 has 6, 7.1 has 8)
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