Trying to find an old obscure animated movie from my childhood!

This is an older animated movie from my childhood that I used to watch on vhs. The movie was a series of shorter stories all in one vhs tape. The characters were a community of tiny people that lived in the forest and had little houses inside the bottom of trees. I remember details from 2 of the short stories. In one there was a wedding taking place and I think right before the wedding happened the river becomes entirely filled with flowers. The more memorable one takes place on Halloween. All of the children get dressed in robes and hats and at one point they are all walking in a line in the dark singing a song. One of them goes off on their own and finds a tree with a hallowed entrance. When they enter the tree thousands of tiny dots of light appear. They glow and then float up into the sky and the child wakes up on the ground in front of the tree and the lights are gone. I’ve been trying to remember what this film is forever, if anyone could help me remember anything at all I would be so extremely happy!!!