[TOMT] Weird animated Christmas movie

The whole story was a “How Christmas began” thing. I saw it on a tape my grandpa had at his house when I was like 8, and I don’t think I got all the way through the film.

It centered around a father, his daughter, and his son (both are kids). They go to the North Pole by boat for some reason, and when they get there they see these floating balls of light. Turns out the balls of light are the true forms of what would later become Santa’s elves, and they can shapeshift into elves when they want. The only other part I remember is a montage of a couple of the elves figuring out what animals should pull the sleigh, and at one point they try lemmings and get pulled off of a cliff.

That’s all I remember.