Video -> Audio -> Video
"Transmitter converts the video (static 64x64 image or 10FPS animation) to the sound, pixel by pixel (progressive scan). So you can listen the sound of your image. But the main function of the Transmitter is to transmit the signal to the receiving devices.
Receiver converts the sound (from microphone or Line-in input) back to the video. You can set the color palette for this video, and record it to animated GIF file.”
(via WarmPlace.Ru. PixiVisor)