The individual posting this video speculates that it could be a strangely shaped balloon, but the classic hat shape with the tight brim around the bottom edge would make it a strange balloon indeed. Interesting that the comments (in Dutch) are so civilized compared to the ones that appear on American UFO videos.
Story Source:
http://www.youtube.com/watch?v=pnDJPDz9oPU Dreamland Video podcast
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