My question really is, lets say you have apple TV or have your multimedia computer attached to a HD television and you are viewing content from the converter, is there software that will allow you to take a lower resolution MP4 file and upconvert on the fly to 720p or 1080p for maximal viewing on a high-def television. Does the apple TV do this? Do the HD TV's do that? It just seems like when I have seen standard def on a high def TV it has not been impressive.
As the previous answers, while correct, did not seem to resonate with you, her's another try.
Let's assume you have a true HDTV with a 1920x1080 panel.
Now, if you watch a normal DVD without any upconversion by the DVD-player. Does the picture fill (a) the entire screen or (b) only the center quarter of it (to be more precisely the center 720x576 px)?
If your answer is (a) which I assume and your answer would be (a) for watching SDTV as well, ther should be some kind of upconversion invloved in your signal chain (as some "device" needs to convert the incoming 720x576 signal into the native resoultion of the panel).
For most "reasonable" uses, it is pretty insignificant, if the upconversion is done by the dvd-player, the TV, an AV-Receiver, a seperate device or elsewhere (although from a singnal processing engineering point of view I'd like to argue that any conversion should be done as late in the chain as possible)
The problem by the way is not so much, that SDTV looks ugly on a HDTV. The problem is more, that a picture in SDTV-resolution (720x576) looks ugly on any devie with a width of over 1 meter, as a single pixel becomes more than 1mm wide.
The output resolution is somewhere in the 720x320 range (anamorphic, etc). My TV is capable of 1080p, I would want to try to maximize the resolution or upconvert those files on the fly to try to improve image quality.
Once you have reduced the resolution to 720x320, no upconverter in the world can increase the real resolution of the pictures. The information is gone!
Still don't get the point? Assume, you reduce the resolution further to let's say 2x1, so that each frame is basically reduced to 2 Pixels. Each of the two pixels will typically show some shade of gray (as the average color of the entire picture should be some shade of gray). No upconverter can ever guess, if the original picture showed a car or a house! This information is gone! Forever!
When I have seen the Apple TV in the store, the video seems grainly and of poor resolution with the demo floor model. Is there anything else I can do to improve the resolution?
It was not due to the poor resolution of the demo model, but due to the poor resolution of the movie source. Therefore there's most likely nothing you could do to improve this.
Yours,
Chip