Why won't Instagram let me post one minute videos on my account?

Oh my gosh! I am so mad! Everyone else can post one minute videos on their Instagram accounts and I can't! When I do a repost I have to break it down into multiple parts! Someone please tell me what is happening! Please refer to these images: http://m.imgur.com/wIHc4wr http://m.imgur.com/jve9a07