USB to RCA cable
RCA Cable with video,audio red and white male connectors. connect to a USB adaptor
There is nothing that is only what you are looking for, you can't get video and audio though a usb port without an external device.
There is this http://sewelldirect.com/pc-to-tv.asp?gclid=CLnt-peM77ACFQjf4AodXF1MuA
And you can get a VGA/DVI or even HDMI video card but then you would need that same converted to use the video composite cable.
dormanraines said:RCA Cable with video,audio red and white male connectors. connect to a USB adaptor
Are you looking from something to go from computer to a device or TV? Or into the computer from and audio video / device that has standard RCA outputs. If so, Roxio makes a VHS to DVD Package that might be what you want and a few other companies also do. Includes cable /adpater to USB and software for around $60.00.
My camera came with cable to go from it to a TV, dont think it had audio and would be mini USB. Camera or Video Camera cable accessories, lus mini usb to regualr usb adapter might be somewhere to look, how the signals get to the USB via softare I cant answer.