I saw the same thing happening about 2 weeks ago in my road, but one hard truth is nobody wants videos these days and charity shop have so many books, they only want books in excellent condition. It's a lot of bother to go through everything with a fine tooth comb looking for things which shouldn't be chucked and so much easier to get house clearance people in. My friend arranged for an auction house to sell a few of her Mum's pieces, but it was nearly 18 months before it was sorted and she didn't feel it was worth the bother.
It helps if family and friends know if there's something they would like. I still have my grandad's James Herriot paperbacks and a big China dashund that he bought in a moment of rebellion against my gran! He died in 1984, but I will always keep them. No doubt they will be binned when I go because nobody else wants them. All the memories gone in the blink of an eye.