Thumbnail Capture

<?xml version="1.0"?>
<query>
    <userid><<id>></userid> <!-- required-->
    <userkey><<key>></userkey> <!-- required-->
    <action>[Action]</action> <!-- required-->
    <source>[SourceFile]</source> <!-- required-->
    <format>
        <output>thumbnail</output> <!-- required-->
        <time>[Time]</time>
        <width>[Width]</width>
        <height>[Size]</height>
        <use_vtt>[yes|no]</use_vtt>
        <vtt_line_size>[LineSize]</vtt_line_size>
        <vtt_max_lines>[MaxLinesPerTile]</vtt_max_lines>
        <vtt_destination>[VTTDestination]</vtt_destination>
        <public_url>[PublicURL]</public_url>
        <public_vtt_url>[VTTManifestPublicURL]</public_vtt_url>
        <quality>[Quality]</quality>
        <destination>[DestFile]</destination>
        <!-- Format params -->
    </format>
</query>

{
    "query": {
        "userid": "<<id>>", // required
        "userkey": "<<key>>", // required
        "action": "[Action]", // required
        "source": "[SourceFile]", // required
        "format": {
            "output": "thumbnail", // required
            "time": "[Time]",
            "width": "[Width]",
            "height": "[Size]",
            "use_vtt": "[yes|no]",
            "vtt_line_size": "[LineSize]",
            "vtt_max_lines": "[MaxLinesPerTile]",
            "vtt_destination": "[VTTDestination]",
            "public_url": "[PublicURL]",
            "public_vtt_url": "[VTTManifestPublicURL]",
            "quality": "[Quality]",
            "destination": "[DestFile]"
        }
    }
}