Average PSNR comparison using MPEG-2 as a front encoder, for the <i>Susie</i>, <i>Mobile & Calendar</i> and <i>Foreman</i> sequences which are encoded at QP = 7, and then transcoded at QP = 15.

Average PSNR comparison using MPEG-2 as a front encoder, for the Susie, Mobile & Calendar and Foreman sequences which are encoded at QP = 7, and then transcoded at QP = 15.