Play Xvid clip on a HD TV vs SD TV

[Cazz]

Hi, I trying to find test and information about play xvid on HDTV vs SDTV

I mean if I have a xvid clip in good quality, if that is somehow change if I play it on a TV that have HD

What I have read but I don't know if that is true or I have misunderstand something that if I play
a xvid clip with HDMI to a full HD TV it scale up and make the picture a little better then if I play it on a SD TV

A SD TV have (I'm from Sweden and we use PAL) 720x576 and a Full HD have 1920×1080
so if a movie is about 640x352 it stretch the picture a little if that is a SD TV but alot when it is a HD TV.
But that I have see it is still a very good picture on a HD TV so something must have happend to make it work??

I hope someone understand what I trying to say

[RabidDog]

The TV itself will UPSCALE the input to fit the screen. It might also perform some video processing to make the picture look better.
Things like smoothing, interpolation and edge enhancement. SO the HDTV's "brain" is converting the input SD picture to something like HD, it will never beat real HD, especially when the original file is (probably) a compressed version of DVD and at a lower resolution than standard SD (720x576). Every conversion loses detail and quality.. every conversion. Some lose a lot (FULLHD to 15fps VCD?) and some lose a little (DVD to Hi-bitrate xvid).

[jagabo]

Scaling in and of itself doesn't make too much difference to the picture quality. More important is how big the picture is and how far away you are. If you watch a 13 inch TV from 3 feet away you may not notice the Xvid artifacts. Watching that same video on a 32 inch TV from 3 feet away and the artifacts will be much more noticeable. On the other hand watching the video on a 32" TV from 9 feet away won't look much different than watching the 13 inch TV from 3 feet away.