ScreenFlow 2

ScreenFlow is a screencast recording application with particular emphasis on iMovie-style simplicity. While it might not have all the bells and whistles found in rival screencasting application Camtasia for Mac, its feature set is complete enough to make very polished videos quickly and without fuss. The app's simple presentation helps a lot to bring that about.
New in version 2 are extra tools and features that really pull the application up a few notches. That said, some of them have been a long time coming and really should have been included from the start.
Pause during recording is one such feature and very welcome now that it's here, but long overdue. It doesn't have a keyboard shortcut by default, but you can easily add one in the preferences. Elsewhere, new shortcuts have been added for a variety of functions such as resizing and zooming, which make a big difference during editing.
Another welcome new addition is transitions between clips, and here's where ScreenFlow's simplicity really starts to demonstrate its value. Adding new clips is easy and they simply drop into place in the clip manager at the bottom of the ScreenFlow window. To create a transition between two clips, just drag them together so they overlap. The length of the overlap on the timeline will determine the time of the transition. A default transition is applied automatically, but there are 16 to choose from and they can be edited with a Ctrl-click on the transition zone.
Thew new Curve Type contextual command adds a professional finishing touch to any visual or audion effects you apply to your recording. Instead of fading in at uniform speed, you can tell ScreenFlow to adjust this speed with a small number of presets.
Unfortunately, there's no way to edit these or add your own curves, but the presets offer sufficient flexibility for most people.
Audio controls are improved, too. A ducking effect is easy to apply and activates automatically when one audio clip meets another. It's also now possible to detach the audio from a combined audio-and-video clip, and edit the two separately ( or discard one and not the other).
People who make a lot of screencasts will be pleased to hear that they can now copy and paste individual audio and video clips, complete with all their applied effects, between ScreenFlow documents.
There's still room for improvements, of course. Effects, once added, can be fiddly to remove. The only way to return everything to default values is to add another effect and adjust your sliders accordingly; it would be nice to have a built-in 'return to defaults' effect that could be applied with one click.
ScreenFlow is very similar to rival Camtasia and the two are priced identically. Choosing one over the other is difficult, as each has its onw strengths. Camtasia has few more features but ScreenFlow is slightly easier to use. and this update is worth seeing. Our advice is to try both before buying