アルファチャンネルAvi https://drive.google.com/file/d/0B1x2dCQNJF8HYzE0OHU0WU5kQzg/view?usp=sharing&resourcekey=0-UclyWoPiLQm4w0WF7gZX-g
http://www.nicovideo.jp/watch/sm31480462
