Any way to make a transparent Keynote background?
Screenflow supports Chroma Key, to automatically remove the background of your video.


In your Keynote presentation, open the Format inspector and choose Edit Master Slide.
For each master slide in use, set the slide background to green, then choose Done.


When you import your Keynote video into Screenflow, select the video and under Video Properties, add a Video Filter for Chroma Key.


Screenflow - Using Chroma Key