MPEG-2 / MPEG-4 in USA?

[Avis]

Does DVB-T signal in USA support MPEG-2 / MPEG-4 ? If not - what is the US system?
I saw a USB DVB-T HDTV TV Tuner Recorder Receiver for computer /that would enable me to watch digital TV on computer/ on ebay for under $10 and I wonder if it would work in the US.