In this chapter, we learned how to work with three sources of video: video file, live video grabbed from camera, and image sequence. We considered several examples of processing video, including replacing colors and slit-scan effect. Also, we discovered a simple video synthesizer, which uses screen-to-camera feedback loop to create vivid effects on prerecorded video.

In the next chapter, we will explore how to work with sound, including playing sound samples, capturing sounds from microphones, and transcoding sounds into images and back.