Sorry about the delay in my reply over the holidays.
Unfortunately it looks like we cannot capture these videos from Amazon at the moment, at least with the Mac version. I have made a note of this, we will looking in adding support for them in a future update.
You may be able to use a screen capture product such as Jaksta Screen Recorder instead for these videos.
Sorry I can't be of more help here.
From Ben Graham @ 04 Jan 2016 13:01