<?xml version="1.0"?>
<query>
    <userid>[UserID]</userid> {/* required */}
    <userkey>[UserKey]</userkey> {/* required */}
    <action>AddMedia</action> {/* required */}
    <source>[SourceFile1]</source> {/* required */}
    <source>
        <color>[Color]</color> {/* required */}
        <duration>[InsertionDuration]</duration> {/* required */}
    </source>
    <source>[SourceFile2]</source>
    <source>
        <color>[Color]</color> {/* required */}
        <duration>[InsertionDuration]</duration> {/* required */}
    </source>
    <source>[SourceFile3]</source>
    <format> {/* required */}
        <output>[OutputFormat]</output> {/* required */}
        {/* format params */}
    </format>
</query>

{
    "query": {
        "userid": "[UserID]", // required
        "userkey": "[UserKey]", // required
        "action": "AddMedia", // required
        "source": [ // required
            "[SourceFile1]", 
            {
                "color": "[Color]", // required
                "duration": "[Duration]" // required
            },
            "[SourceFile2]", 
            {
                "color": "[Color]", // required
                "duration": "[Duration]" // required
            },
            "[SourceFile3]" 
        ],
        "format": { // required
            "output": "[OutputFormat]" // required
            // format params
        }
    }
}

Parameter	Description	Allowed Values	Default Values
color	Video Insertion solid color	Color in hex format	none, effectively black
duration	Sequence duration	Valid Timecode in format: HH:mm:ss:SS - non-dropframe timecode HH:mm:ss;SS - dropframe timecode	none

🚧
Note
Blank frame insertion is currently limited in support to single-bitrate output formats (e.g. mp4, mpegts, etc.)
Blank frame insertion is not presently compatible with split-screen transforms.