How can I đăng tải a video??

I think the only way to đăng tải video is first uploading them in websites like YouTube, and then bạn can post an URL, because it doesn't say anything like "upload from computer" hoặc anything does it? So I'm guessing bạn can make an account on YouTube and đăng tải the video there, then copy and paste it's web address to where it says url when uploading it here and that's it. :)

I don't kno too!

well since i have been here since roughly 1865 i can tell bạn uploading to fanpop WAS possible for a while there...it wasnt used much though so fanpop no longer hosts videos. YOu need to find a site that actually HOSTS the video and then add the url here on fanpop.
make an account with a service like dailymotion hoặc vimeo (you can try Youtube but heck Youtube IS THE DEVIL...SAY IT WITH ME KIDS Youtube IS THE DEVIL)upload your video there and THEN come back to fanpop and add it to the appropriate spot!

HONEY bạn GOTTA LEARN!!!
First, bạn go to Youtube and đăng tải it there.
Next, its going to give bạn instructions.
Then, bạn go to www.fanpop.com
Last, bạn đăng tải IT ON fanpop BUT FOR THE url bạn HAVE TO ENTER THE NAME OF THE VIDEO bạn WANT TO POST.

First bạn đăng tải it in youtube. bạn can see the đăng tải button in the left side of the tìm kiếm box of YouTube. Well it takes some time. Then watch your video and copy video URL(right click on it and click copy video URL) then paste it wherever bạn want!
HOPE THIS HELPS.