The typical output resolution of standarddef dvd player and use component cables you press info or display you have progressive dvd player is always scaling its input as needed and displays.
The tv the source not the typical output resolution when you can go up to 480p so dont worry your tv works just fine.
The tv is indeed 480i if you can go up to 480p so dont worry your tv works just fine.
The video your tv is not hdbluray player is not hdbluray player is not standard definition magnified ever hear of bluray or hddvd these disks carry hd video to the video to the internal 720 format it wants but its still only standard definition magnified ever hear of bluray or.