| Name | Description | Type | Additional information |
|---|---|---|---|
| class_id | integer |
None. |
|
| video_id | integer |
None. |
|
| class_video_id | integer |
None. |
|
| video_name | string |
None. |
|
| snapshot_url | string |
None. |
|
| orig_url | string |
None. |
|
| duration |
视频播放时长（单位：秒） |
integer |
None. |