On Fri, 18 Jan 2008 21:53:46 -0500 Rich Felker <dalias at aerifal.cx> wrote: > Purely on a codec basis, mpeg4 is barely better than mpeg2. At reasonably high bitrates, that's true. At very low bitrates, it's not so close. And I'd say the tiny GOP size for (standard) DVDs has a much bigger impact than the datarate.