This is my small setup and how it looks like, Running p200mHZ MMX computer with a gravis ultrasound 1MB sound card. The video signals come through a very cheap (acually the ONLY one I could find at a ok price), then connected to a pinnacle pctv deluxe mpeg2 hardware encoder.. anyway, some vids
https://www.youtube.com/watch?v=WKXYrawg8Zw&html5=True
https://www.youtube.com/watch?v=9CbGgPf0R5U&html5=True
https://www.youtube.com/watch?v=mzLiH2Ucd-0&html5=True
And as a result of these methods, here is an example from a great Norwegian group called INF with their 64kb intro Mainstream