Popcorn Maker is a free web app from Mozilla that allows users to
easily remix web video, audio and images into cool mashups that you can embed on other websites. Drag and drop content from the web, then add your own comments and links – all within your browser. Popcorn Maker videos are dynamic, full of links and unique with every view.
Users can add media from YouTube, Vimeo, SoundCloud, Audiour, HTML5 media, and even image links.