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.‎‎