1. Open the real-time video interface

2. Click "feature" in the lower right corner

3. Click "playback"

4. Select the date and time to be recorded

5. Click the "Record" icon in the lower right corner

6. Return to the real-time video interface

7. Click "gallery"

8. Open the video that needs to be saved

9. Click the "Share" icon in the lower left corner

10. Click "save video"

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