Corbis Images has closed their doors. Currently when you go to their website, you are redirected to Getty Images where the following is posted:
Corbis Images and Corbis Motion closed their doors on 2 May, 2016. But don’t worry, we’ve got you covered. We are moving the best Corbis imagery and video content to Getty Images. This means that you now have access to even more stunning content, coupled with our expert insights and global services, all in one place. (Bolding mine)
It’s not clear what GI considers to be the best, but it sounds like many photos and videos will be lost.