Chewtobacca said:

All anamorphic DVD require display at 16:9/Wide mode. Displaying them at 1:1 is simply wrong, unless you are almost certain that the studio neglected to take nominal analogue blanking into acount when authoring the DVD, in which case the studio made an error.

To the first point, yes, per the player, NOT the TV.

The TV needs to display them at 1:1, if you are using an old player or sending 480 to the TV then YES you would need the TV to stretch the picture (wide mode).

But if you are using an upscale player, and at that one that is not super cheap (Bluray or quality DVD player), then you set the mode to regular or full or whatever it is and set it to 1:1 pixel map (on the TV), and the player itself determines the signal to send via the control menu of the player.

I dont know how you might be doing it, but perhaps youre sending the wrong signal or you just want an anamorphically enhanced pillarboxed image.....