I have done some AE creations at 1920 x 1080 in square pixels. I was going to go to Blu-ray, but now I have to output to DVD. Issue is this, when compressing via Encore with output set to default Mpeg2-DVD at max bitrate, the text looks lame on a 43" plasma TV - jagged edges. It looks great on my 22" LCD monitor even at 200%. Is there something obvious I am missing or is it just the fact that DVD is not an HD format?
If you would like to just downscale it in Encore, you can get a little better quality by enabling the "Maximum Render Quailty" located in the transcode settings for the video asset. Right click on the video in the project panel, then go to "Transcode Settings". Then check the box next to "Use Maximum Render Quality". This will make the encode take much longer, but will provide you with a better looking downscale. For best results, you should use the method mentioned in the article I linked above.