Record Desktop from Check this option to record your computer monitor. This source records by default and cannot be deselected.
Record Video from Check this option to record video from any camera connected to your computer. Use the dropdown menu to choose from multiple cameras. Upon selecting a source, a preview image is displayed below.
Record Audio from Check this option to record audio from any microphone connected to your computer. Use the dropdown menu to choose from multiple microphones. Upon selecting the source, the volume level is displayed below.
Record Computer Audio Choose this option to record all sounds played through your computer. The ScreenFlow audio driver must be installed to use this setting. If the driver is not installed, you are prompted to install it.