Under old windows, too .. but as top comment says, quality is quite surprizing, considering all limitations.
"USB video capture in 2002: Dazzle DCS 200"
mpeg2 SD video (NTSC/PAL), at around 6 Mbits/s
ofcourse capturing raw/lossless is superior ... if you have hd space. But I guess analog/noise filtering part in those old parts was main feature and not afterthought like on some more modern devices {echoing from comments}