If the BD player were to upscale the DVD to 1080P, your AVR shouldn't do any further processing resulting in "double up-scaling".
I'm not immediately familiar with a blu-ray player that will pass 480i/p (unless you set that as the Blu-ray's output, which may be possible). Maybe someone else will have a suggestion.
I'm not immediately familiar with a blu-ray player that will pass 480i/p (unless you set that as the Blu-ray's output, which may be possible). Maybe someone else will have a suggestion.