Libvpx VP9

<?xml version="1.0"?>
<query>
    <userid>[UserID]</userid> <!-- required-->
    <userkey>[UserKey]</userkey> <!-- required-->
    <action>[Action]</action> <!-- required-->
    <format>
        <output>webm</output>
        <video_codec>libvpx-vp9</video_codec>
        <video_codec_parameters>
            <crf>[QualityLevel]</crf>
            <lossless>[yes|no]</lossless>
            <speed>[EncoderSpeed]</speed>
            <tile-columns>[Columns]</tile-columns>
            <tile-rows>[Rows]</tile-rows>
            <frame-parallel>[yes|no]</frame-parallel>
            <auto-alt-ref>[yes|no]</auto-alt-ref>
            <lag-in-frames>[FramesNumber]</lag-in-frames>
            <deadline>[good|realtime]</deadline>
            <quality>[good|realtime]</quality>
            <static-thresh>[Threshold]</static-thresh>
            <aq-mode>[Mode]</aq-mode>
            <noise-sensitivity>[Sensitivity]</noise-sensitivity>
            <arnr-maxframes>[FramesCount]</arnr-maxframes>
            <arnr-strength>[Strength]</arnr-strength>
            <arnr-type>[backward|forward|centered]</arnr-type>
            <max-intra-rate>[Framerate]</max-intra-rate>
        </video_codec_parameters>
    </format>
</query>

{
    "query": {
        "userid": "[UserID]",
        "userkey": "[UserKey]",
        "action": "[Action]",
        "format": {
            "output": "webm",
            "video_codec": "libvpx-vp9",
            "video_codec_parameters": {
                "crf": "[QualityLevel]",
                "lossless": "[yes|no]",
                "speed": "[EncoderSpeed]",
                "tile-columns": "[Columns]",
                "tile-rows": "[Rows]",
                "frame-parallel": "[yes|no]",
                "auto-alt-ref": "[yes|no]",
                "lag-in-frames": "[FramesNumber]",
                "deadline": "[good|realtime]",
                "quality": "[good|realtime]",
                "static-thresh": "[Threshold]",
                "aq-mode": "[Mode]",
                "noise-sensitivity": "[Sensitivity]",
                "arnr-maxframes": "[FramesCount]",
                "arnr-strength": "[Strength]",
                "arnr-type": "[backward|forward|centered]",
                "max-intra-rate": "[Framerate]"
            }
        }
    }
}