use this screenflow 9 template to round your 16:9 webcam into a circle webcam style. also includes animated backgrounds plus video tutorials of how to stack your layers.
Not for the faint hearted, but works pretty well once you know how to automate in a recording template. much less editing!
Learn how to style assets to assist in rapidly producing content for regular shows, you can save styles to re-use later.
screenflow 9 template, animated backgrounds and tutorial videos