The most common homeowners insurance policy insures the market value. With this kind of policy, stolen or destroyed items are depreciated in value according to the age of the item. Consequently, your stolen television would be replaced with a new set of comparable quality. To assist the insurance company with replacement costs, and thereby guarantee replacement with comparable valued items, save the receipts or photograph items in your home. Having an inventory of each room, with photographs, will also keep you from having to rely on your memory to recall every item which may have been stolen or destroyed.
Videotapes are acceptible.
If so, call your insurance agent and have a talk to discover if your current policy is adequate. Better to be safe than sorry.