The Output tab in the Hardware Configuration panel contains controls governing TriCaster’s outputs

Primary Outputs

Depending on the model, either the first two (Mini SDI, Mini, and 2-RU models) or three (4-RU models) output row entries correspond to physical output connectors. In addition, the first four entries are always exposed to connected networks as NDI (Network Device Interface) outputs.

These primary outputs support the largest number of optional video sources and, uniquely, can follow a delegated M/E or Switcher color group.  All other outputs can be assigned to follow a primary output, or show another designated Switcher source (excluding M/Es).

Uniquely, Output 2 can be tasked with sending an alpha channel matte to downstream systems.

Let’s consider the optional settings provided by primary outputs:

  • Video menu – assign any source from the following list to either Output 1 or Output 2:
  • Program
  • Program (Clean)
  • Preview (look ahead)
  • Cameras – Inputs 1-(8 or 12)
  • Media Players (DDRs and GFX players)
  • Output from M/E 1- (4 or 8)
  • Buffers (1-15)
  • Follow
    • M/E Preview
    • M/E Program
    • Green (FX)
    • Gold
    • Blue Red
  • Black
  • Alpha MatteOutput 2 only
  •  Audio menu – choose which audio is presented on the corresponding SDI, HDMI, Stream and Network outputs (Analog Outputs 1 and 2 connections always carry Master and Aux sound, respectively):
  •  Outputs
    • Master (sound from the Master bus channels)
    • Aux 1, 2 (sound from the Aux busses, 1-3)

(See Section 15.7.2 for discussion of TriCaster’s internal audio busses).

Inputs 1-(8 or 12) – sound from any single audio input

  • Resolution menu – Output 1 is always at session resolution. For other outputs, select the video format for downstream devices you intend to connect to the corresponding output:
  •  1080i or 1080p – depending on the session format
  • 720p
  • 480i (4:3) –interlaced standard definition NTSC sessions only
  • 480i (16:9) –interlaced standard definition interlaced NTSC sessions only
  • 480p – progressive standard definition NTSC sessions only
  • 576i (4:3) –interlaced standard definition PAL sessions
  • 576i (16:9) – interlaced standard definition PAL sessions
  • 576p – progressive standard definition PAL sessions


Note: Output 1 always transmits video in session format, thus shows a Resolution display only (rather than providing menu settings).

  • Analog Out menu (not present on TriCaster 410 or TriCaster Mini) – select the video connection type for downstream devices you intend to connect to the corresponding output:
    • Component
    • Composite + Y/C

Note: The only analog connection type suitable for HD video is Component. The Analog Out menu for primary outputs are automatically set to Component when the selected Resolution is HD.

Choosing Component or Composite + Y/C results in the output connectors in the corresponding row being configured as shown in the following table:


Connection Type


BNC 2 (Y)

BNC 3 (Pb)

BNC 4 (Pr)







Composite + Y/C






Note: TriCaster’s digital (SDI) video outputs are always active, even when the analog outputs in the same group are in use. HDMI display devices will typically show black when they do not support video displays of the format (resolution, etc.) selected as source.

Generally, source formats that are inconsistent with the current output resolution setting are automatically conformed when possible.  In some cases, such as non-standard image or iVGA sources, the output format may be modified to provide a suitable display.  It’s best to avoid non-standard sources whenever possible.

Alpha Matte

The Video source menu options for Output 2 include a switch labeled Alpha Matte.  This feature can be used independently, or supplement the Act as Alpha option (discussed in Section 0).

An alpha matte can be automatically derived from suitable sources. It might be the matte from a LiveMatte keyer effect, allowing Output 2 to support downstream compositing of the full color source. Or, it could be drawn directly from an image or Title Page in a Media Player.  It could just pass-through the matter from an upstream alpha channel source. Simply enable the switch in the Output Configuration panel, and select a suitable source using the same menu.

Note:  Generally, the source’s Resolution should match session format when supplying an Alpha Matte signal to downstream devices.

General Notes

Here are some other noteworthy facts related to output:

  • For SD session formats, session aspect (4:3 or 16:9) is respected on output (e.g., when the session is SD 16:9, video output is also 16:9).
  • For HD sessions (which are always 16:9), interlaced SD video from a primary output and any output set to Follow it) can use either a 16:9 image aspect or as (side-cropped) 4:3 video, as noted earlier when discussing the Resolution

Hint: Even if you are not using the HDMI output, , it can be especially useful, since a) it supports the full array of optional sources, and b) secondary outputs can follow it.  For example, you might set HDMI to ‘output’ an M/E, and then send that M/E to the Network output (which is not normally able to output an M/E directly).


For more information please download the entire document at

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