Quicktime Kit (QTKit) is an Objective-C Mac OS X framework that provides a rich set of programming interfaces for manipulating time-based media such as audio and video. With QTKit, we can perform the following tasks with time-based media:
Play
Edit
Export
Capture
Record
For our iSight Recorder App, we will be focusing on the component of QTKit called QTKit Capture, which provides the classes we need to capture and record audio and video to Quicktime movies.
QTKit Capture, at its core, provides us with the following key classes:
In essence, we need to create a capture session, which will have some inputs (iSight camera, built-in microphone), some outputs (preview view, movie file), and some connections between the inputs and the outputs.