Blank Frames Insertion

<?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
        }
    }
}