WeVideo is a great site that allows anyone to create and edit videos online. The really nice thing about WeVideo is that the videos are collaborative. With WeVideo students can work on their group project videos at different computers/locations. There is nice learning support for students new to WeVideo. The new Storyboard mode is great for beginners who do not have a lot of video editing experience. There is also a Timeline mode for students more comfortable with editing videos.
Another great thing that WeVideo offers to students is the ability to connect social media (Facebook/Instagram) and cloud storage (Dropbox/Google Drive) accounts to their accounts.
The video embedded below is an overview of WeVideo.