[OpenAI 兼容] 查询任务结果

{
    "id": "string",
    "object": "video",
    "model": "string",
    "status": "queued",
    "progress": 0,
    "created_at": 0,
    "completed_at": 0,
    "metadata": {
        "url": "string"
    },
    "error": {
        "message": "string",
        "code": "string"
    }
}