The GTV-COMPSVID-2-HDMIS scaler takes either composite or s-video as input and converts it to digital HDMI video, scaling it up to a maximum output of 1080p resolution (or 1920x1200 when used with a computer monitor).
Simply plug in your composite or s-video source to its input jack on the rear of the scaler. The scaler will automatically detect the video frequency and resolution of the source signal, then convert that picture to a digital HDMI video signal, then choose the best output resolution and viewing format of the picture on your HDTV using the buttons on the front of the scaler.