Screenflick has a few recording settings that you need to familiarize yourself with to make the best use of it. Instead of recording the entire screen at full speed for every recording you make, Screenflick allows you to pick the area of the screen to record, and the maximum frame rate to record at.
Screenflick can either record a fixed area of the screen (a portion of the screen, or the full screen), OR it can also record a smaller area that continuously follows the mouse cursor. This latter option allows the area of the recording to be small but still be able to "see" the entire screen.
In addition to picking one of these modes at the start of the recording, you can also switching between them by using the keyboard shortcut set in Screenflick's preferences. (Command-Options-Shift-2 by default.)
The capture rate is the maximum number of frames per second that the screen will be recorded at. Choose higher options (30 and even 60 fps) for normal, fluid video. Lower options are useful for reduced recording sizes and even time lapse recordings.
Typically, the screen updates at 60 times per second, and while Screenflick could try to record all of those updates, it's usually not needed. For some uses, recording 60fps is useful, others 30 is plenty, and still others (such as web videos where file size is critical), 10 or 15 fps is all that's needed. While scaling down from a 60 fps recording to 15 fps could be done at the time you export the movie, that means Screenflick would be using four times as much disk space and CPU power than it needs to. To avoid that, Screenflick lets you pick the maximum frame rate from a wide range of choices based on your display's refresh rate.
Choose to record the audio playing on your Mac, and/or audio from a microphone or another audio device. The audio sources are recorded in separate stereo tracks which can be exported separately or mixed down into a single stereo track later.
As with all programs, recording system audio requires using a system extension, which is easily installed (and uninstalled) using Screenflick itself. You can click on the "Record System Audio" checkbox to have Screenflick prompt you about installing it, or click on the "Audio Extension…" button. Installing the extension adds a new "virtual" audio device to the system called "Screenflick Loopback". Once installed, you will see this "device" show up in the System Preferences Audio panel's Input and Output device lists. The extension can be uninstalled at any time, easily.
Record from the built-in FaceTime camera, an external USB webcam, or even an DSLR camera (with an appropriate system plugin). You can also use Screenflick on your Mac in combination with the "Screenflick Camera" iOS app to record from your iOS camera.
Once you've chosen the general options for your recording (including the type of camera movement, the max recording speed, and audio devices), click on the "Record" button to move onto the screen selection phase.
Additional options include delaying the recording until a screen resolution change takes place (useful for full screen gaming), or a timer to automatically stop the recording.