This Composite to HDMI converter takes either composite ‎(‎yellow RCA‎)‎ video or S‎-video as input and converts it to HDMI‎.‎ It will combine the audio input ‎(‎2 x red / white RCA‎)‎ into the HDMI stream to have audio & video via HDMI‎.‎ It allows older analog devices to be integrated into today‎'‎s home theatre systems‎.‎Upscalers only change the resolution of the input signal to a higher resolution‎,‎ digital format and will have no difference in video on the output‎.‎ This device also functions as an upconverter ‎(‎different from upscaler only‎)‎ and will apply post‎-processing image algorithms to make the image look smoother and less pixelated by using pixel interpolation‎,‎ pixel blending‎,‎ bicubic filtering‎,‎ de‎-interlacing & color enhancements‎.‎ This converter has a built‎-in processor to do image enhancements‎.‎ Please note that no product on the market can upscale low quality composite ‎(‎RCA‎)‎ video to be the same quality as HD 720p video or 1080p video‎,‎ but some video improvements can be noticed when using this converter‎.‎ This converter is primarily used to connect traditional composite / yellow RCA devices to an LCD ‎(‎such as a PC LCD‎)‎ which does not have composite / RCA inputs and only HDMI outputs‎.‎