Quality checklist

Before submitting, check each item:

• [ ] I watched the full video and every supplied view.
• [ ] Every statement is supported by the prompt and visible evidence.
• [ ] EQA counts and order are verified; VTG timestamps are chronological.
• [ ] Densecap covers continuously from 00:00 to the end with no gaps or overlaps.
• [ ] Good episodes cover every second and assign a reason to every unusable episode.
• [ ] Required fields, timestamps, JSON, and list formats follow the prompt.
• [ ] I did not edit the prompt, task ID, or filename.
• [ ] I saved successfully before submitting to the next stage.