- I'm not sure from the question if you're asking about something that can do that during a live presentation, or just allow you to edit after recording your screen. If you mean 'live', I'm not sure, but Screenflow provides a decent amount of tools to help create good screen casts. You can pause the video portion ('freeze' it) while the audio track carries on, and you can add in mouse highlighting, add shape overlays, text, etc. Have used screenflow from v3 to v6 and still find I fall back to it multiple times per month for various projects.
I love Screenflow although the last couple of updates have been getting pushed out a little buggy. I'd rather a less frequent cadence at a higher price point. Screenflow itself is awesome - I've yet to find something better.
I was using v5 but not it doesn't work on the new Mac OS. I agree with everyone that the constant update$ are annoying. It's great but at a $129 cost, I'd rather just record raw and use another editor like iMove and FinalCut that I already own. 6 months from now, will v8.5 cost another $39?