<?xml version="1.0"?>
<query>
    <userid><<id>></userid> <!-- required-->
    <userkey><<key>></userkey> <!-- required-->
    <action>[Action]</action> <!-- required-->
    <format>
        <!-- Format fields -->
        <output>smooth_streaming</output>
        <add_audio_only>[yes|no]</add_audio_only>
    </format>
</query>

{
    "query": {
        "userid": "<<id>>",
        "userkey": "<<key>>",
        "action": "[Action]",
        "format": {
            "output": "smooth_streaming",
            "add_audio_only": "[yes|no]"
        }
    }
}