Version 3

<?xml version="1.0"?>
<query>
    <userid>[UserID]</userid>
    <userkey>[UserKey]</userkey>
    <action>GetMediaList</action>
    <version>3</version>
    <page>[PageNum]</page>
    <per_page>[ItemsPerPage]</per_page>
    <date_from>[DateFrom]</date_from>
    <date_to>[DateTo]</date_to>
    <mediaid>[MediaID]</mediaid>
    <taskid>[QueueID]</taskid>
    <output>[OutputName]</output>
    <format_params>[FormatParams]</format_params>
    <sort>[SortingField]</sort>
    <order>[asc|desc]</order>
</query>

{
    "query": {
        "userid": "[UserID]",
        "userkey": "[UserKey]",
        "action": "GetMediaList",
        "version": "3",
        "page": "[PageNum]",
        "per_page": "[ItemsPerPage]",
        "date_from": "[DateFrom]",
        "date_to": "[DateTo]",
        "mediaid": "[MediaID]",
        "taskid": "[QueueID]",
        "output": "[OutputName]",
        "format_params": "[FormatParams]",
        "sort": "[SortingField]",
        "order": "[asc|desc]"
    }
}

<?xml version="1.0"?>
<response>
    <pagination>
        <per_page>[ItemsPerPage]</per_page>
        <page>[PageNum]</page>
        <count>[ItemsCountOnPage]</count>
        <total>[TotalItemsCount]</total>
        <pages>[PagesCount]</pages>
    </pagination>
    <media>
        <id>[MediaID]</id>
        <userid>[UserID]</userid>
        <sourcefile>[SourceFile]</sourcefile>
        <created>[CreatedDate]</created>
        <started>[StartedDate]</started>
        <finished>[FinishedDate]</finished>
    </media>
    <media>
        <id>[MediaID]</id>
        <userid>[UserID]</userid>
        <sourcefile>[SourceFile1]</sourcefile>
        <sourcefile>[SourceFile2]</sourcefile>
        {/* multiple source files */}
        <sourcefile>[SourceFileN]</sourcefile>
        <created>[CreatedDate]</created>
        <started>[StartedDate]</started>
        <finished>[FinishedDate]</finished>
    </media>
</response>

{
    "response": {
        "pagination": {
            "per_page": "[ItemsPerPage]",
            "page": "[PageNum]",
            "count": "[ItemsCountOnPage]",
            "total": "[TotalItemsCount]",
            "pages": "[PagesCount]"
        },
        "media": [
            {
                "id": "[MediaID]",
                "userid": "[UserID]",
                "sourcefile": "[SourceFile]",
                "created": "[CreatedDate]",
                "started": "[StartedDate]",
                "finished": "[FinishedDate]"
            },
            {
                "id": "[MediaID]",
                "userid": "[UserID]",
                "sourcefile": [
                    "[SourceFile1]",
                    "[SourceFile2]",
                    // multiple source files
                    "[SourceFileN]"
                ],
                "created": "[CreatedDate]",
                "started": "[StartedDate]",
                "finished": "[FinishedDate]"
            }
        ]
    }
}