Dual Output – Error Solution Guide

Windows, Mac

Overview

PRISM Live Studio provides a Dual Output feature that allows you to stream both horizontal and vertical broadcasts simultaneously. This feature lets creators deliver content optimized for both PC and mobile viewers at the same time.

However, some users have encountered the following error message:

This error occurs when Dual Output is enabled, but only one of the two outputs — either Horizontal Output or Vertical Output — has a connected channel.

Cause

When using the Dual Output feature, you must connect at least two channels, and both output directions must have assigned channels.

To summarize:

1. At least two streaming channels must be connected.

2. Both Horizontal Output and Vertical Output must have their respective channels assigned.

---

Solution

CASE 1. Only one channel is linked while Dual Output is enabled

Problem

You are trying to use Dual Output, but only one channel has been connected.

Solution

1. Click the three-dot menu (⋮) next to My Channel.

2. Select Add Channels to connect an additional channel.

   • At least two channels must be connected to use Dual Output.

3. After adding the channel, make sure both Horizontal Output and Vertical Output are properly assigned.

   
4. Click Go Live to begin your broadcast.

---

CASE 2. Multiple channels are linked, but only one output is assigned

Problem

Dual Output is enabled and more than one channel is connected, but only one output (e.g., Horizontal Output) has been configured — while the other (Vertical Output) remains empty.

Solution

1. Hover over a channel and click the Dual Output icon (PC + Mobile icon).

   
2. Select the unassigned output (e.g., Vertical Output) to assign a channel.

3. Verify that both Horizontal Output and Vertical Output have connected channels.

   
4. Click Go Live to begin your broadcast.