Do you mean compared to TD that is also producing 1440x720? First the pyTivo documentation (Wiki) is only as good as volunteers make it. Hopefully after you've learned some lessons you will contribute and make it better. The pyTivo.conf.dist example config file needs cleaning up and the configuration instructions too. The width and height parameters do control the video size that pyTivo outputs. Each TiVo model has a selection of width/height combinations that it will accept on TTCB. The combinations for Series 2 models are given here at the bottom of the page. You should select width and height from the valid combinations for your Tivo model, and choose a combo that is appropriate for your TV. For a 27" non-HD TV, 544x480 will be plenty. If you have a wide-screen TV, set your Tivo to 16:9 aspect ratio and set aspect169=true in your pyTivo.conf file. pyTivo makes a valiant effort at either letterboxing or pillarizing videos that don't match your selected aspect ratio. The transcoding speed is determined primarirly by the sum of video_br and audo_br (subject to limitations of your PC and network of course), regardless of video dimensions. This sum determines how many bytes it takes to encode each second of your video.