视频任务状态查询

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    "data": {
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        "status": "SUCCESS",
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        "start_time": 0,
        "finish_time": 1756453535,
        "progress": "100%",
        "data": {
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                "file_id": 306793063383292,
                "purpose": "video_generation",
                "filename": "output.mp4",
                "created_at": 1756453566,
                "download_url": "https://public-cdn-video-data-algeng.oss-cn-wulanchabu.aliyuncs.com/inference_output%2Fvideo%2F2025-08-29%2F454554d4-6485-469b-8eff-f6786bbaff62%2Foutput.mp4?Expires=1756485985&OSSAccessKeyId=LTAI5tAmwsjSaaZVA6cEFAUu&Signature=5DmRk6grPMEwP7rLq0LwJbi633A%3D",
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            "status": "Success",
            "file_id": "306793063383292",
            "task_id": "306792606023824",
            "base_resp": {
                "status_msg": "success",
                "status_code": 0
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            "video_width": 1366,
            "video_height": 768
        }
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}