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2. If there are no *.mix and *.desktopmix descriptors for a certain number of participants, the tool will generate a picture file with _fallback suffix using a standard mixer layout from WCS settings.

Standard layouts implementation in XML markup language

The following archive file Layouts.tar.gz contains examples of standard mixer layouts implementation compatible with WCS builds since 5.2.1094 and newer

The archive contains the following folders:

• GridLayout - grid layout implementation with paddings

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• CenterNoPaddingGridLayout - grid layout implementation with no paddings between picture frames

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• СropNoPaddingGridLayout - grid layout implementation with no paddings between picture frames and images crop

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• samples - mixer output picture samples folder

Usage

1. Unpack the archive to /opt folder

cd /opt
tar -xzf ~/Layouts.tar.gz 

2. Set default layout in flashphoner.properties file as needed

mixer_layout_dir=/opt/GridLayout

or set the layout while creating a mixer by REST API

POST /rest-api/mixer/startup HTTP/1.1
Host: localhost:8081
Content-Type: application/json
 
{
    "uri": "mixer://mixer1",
    "localStreamName": "mixer1_stream",
    "hasVideo": true,
    "hasAudio": true,
    "mixerLayoutDir": "/opt/CenterNoPaddingGridLayout"
}