open.MaterialItem

{
    "created_at": 0,
    "duration": 0,
    "file_ext": "string",
    "file_size": 0,
    "id": 0,
    "img_height": 0,
    "img_width": 0,
    "material_name": "string",
    "material_type": 0,
    "org_id": "string",
    "pid": 0,
    "storage_type": 0,
    "transcode_status": 0,
    "updated_at": 0,
    "url_path": "string",
    "user_id": "string",
    "video_cover": "string"
}