获取视频生成任务状态

{
    "code": "success",
    "message": "",
    "data": {
        "task_id": "cgt-20260227150701-bwgfp",
        "action": "generate",
        "status": "SUCCESS",
        "fail_reason": "https://ark-content-generation-cn-beijing.tos-cn-beijing.volces.com/doubao-seedance-1-5-pro/02177217602829600000000000000000000ffffac191d3663440f.mp4?X-Tos-Algorithm=TOS4-HMAC-SHA256&X-Tos-Credential=AKLTYWJkZTExNjA1ZDUyNDc3YzhjNTM5OGIyNjBhNDcyOTQ%2F20260227%2Fcn-beijing%2Ftos%2Frequest&X-Tos-Date=20260227T070748Z&X-Tos-Expires=86400&X-Tos-Signature=b7383ffd086326f52796a04f522d035dde83088d48d73ea961284aa65fb80205&X-Tos-SignedHeaders=host",
        "submit_time": 1772176021,
        "start_time": 1772176028,
        "finish_time": 1772176073,
        "progress": "100%",
        "data": {
            "id": "cgt-20260227150701-bwgfp",
            "seed": 22698,
            "draft": false,
            "model": "doubao-seedance-1-5-pro-251215",
            "ratio": "1:1",
            "usage": {
                "total_tokens": 108900,
                "completion_tokens": 108900
            },
            "status": "succeeded",
            "content": {
                "video_url": "https://ark-content-generation-cn-beijing.tos-cn-beijing.volces.com/doubao-seedance-1-5-pro/02177217602829600000000000000000000ffffac191d3663440f.mp4?X-Tos-Algorithm=TOS4-HMAC-SHA256&X-Tos-Credential=AKLTYWJkZTExNjA1ZDUyNDc3YzhjNTM5OGIyNjBhNDcyOTQ%2F20260227%2Fcn-beijing%2Ftos%2Frequest&X-Tos-Date=20260227T070748Z&X-Tos-Expires=86400&X-Tos-Signature=b7383ffd086326f52796a04f522d035dde83088d48d73ea961284aa65fb80205&X-Tos-SignedHeaders=host"
            },
            "duration": 5,
            "created_at": 1772176022,
            "resolution": "720p",
            "updated_at": 1772176068,
            "service_tier": "default",
            "generate_audio": true,
            "framespersecond": 24,
            "execution_expires_after": 172800
        }
    }
}