アルファチャンネルAvi https://drive.google.com/file/d/0B1x2dCQNJF8HS1UtejdudTIyRjg/view?usp=drivesdk&resourcekey=0-inOKmlWbRQXCAJHNjba7aQ
http://www.nicovideo.jp/watch/sm31955103
