✔ 最佳答案
I must say that i am sorry to inform you that there isn't any official animation abou Harry Potter to downlaod. Maybe there are some made by fans but they do not have a good quality.
If you like to see the animation, you may buy the game of harry potter since there are some animation about the story.
Also, you can go to the links to watch the trailers of the games
http://harrypotter.ea.com/quidditch/usa/home.html
http://harrypotter.ea.com/cofs/usa/home.html
http://hppoa.ea.com.tw/express_videos.htm
http://harrypotter.ea.com/hpgof/flash_ch_CH.html?lang=ch_CH