I'm not sure that box is converting the right way around. The description says, "converts analog composite input to HDMI 1080p" and the icons under the main photo seem to suggest it does RCA > HDMI but not HDMI to RCA.
looks to be the right way around. It's a lot cheaper than I was expecting!
Edit:
Hydebear's photos seem to settle this. Whatever sockets those turn out to be, none of them is a composite input so we can abandon the search for DtoA converters
