Telestreams ScreenFlowthe much-lauded app for capturing videos of what's happening on your Mac's screenhas been upgraded. ScreenFlow 4, which launched last week, adds a bunch of new features for creating special effects and smoothing the screen-capture workflow.
Among the new features is the ability to nest clips, which lets you merge multiple elements into a single video clip; that clip can then be edited in a single action with filters and other video effects. The result is smoother, faster video production.
Other new features include closed captioningeither for the hearing impaired or for viewers who prefer a text accompaniment to their tutorials. There's also a new Chroma Key feature, which lets you replace a greenscreen background with the video or still image of your choice, giving you George Lucas-like powers over your creations.
The updated app includes a number of other new features as well, including a timer that enables you to limit the duration of your recording, along with other workflow aids. (Telestream has a videonaturallyshowing the app in action.)
ScreenFlow 4 is available as a free trial or as a $99 purchase; users of previous versions of ScreenFlow can upgrade for $29. The app is compatible with Mac OS X 10.6.6 and later.