I have Joomla 2.5 with latest K2

Let's say I have 50 K2 pages (items) created by various members.
I can see the item list by going to Components > K2 > Items.
administrator/index.php?option=com_k2&view=items

Question:
1. How do I see which items have "videos" (Media) by scanning through the list?
2. How do I see which items have "attachment" by scanning through the list?

The list shows "Images" but not Media or Attachment.

Please suggest.