Nice point...
But you would need to create a new standart of video, one that use more bits, creating more than 256 levels of gray per channell, and also one color channel that is not just 50%$ reolution of the B&W channel.
The SD standarts, which I presume include all SD transfer made, use the color and B&W standarts I said.
If they create a new standart, would need to transfer all materials again, and if they tranfer will be in higher resolution.
Today mpeg-2 it's already dated, and even with the same bitrate, but using modern encoding algorithm, you could get better.
Sometimes you can create something almost like a super DVD yourself. Check thse image from CITY Lights, which I took from Blu Ray captures, enhanced a bit sharpness, and resize to SD:




Now compare to the captures from original Warner DVD of the same digital restoration:
http://www.dvdbeaver.com/film/dvdcompare/citylights.htm" target="_blank"
I did it only for the screen captures, but if we take the Blu Ray, and increase the sharpness, using a player with sharpness adjust, we can convert the sharpned image to SD in a maximum bitrate DVD file format. When you increase sharpness from a HD file, the details get better, and after convert to SD the SD will have many more details than if wasn't sharped in HD.
It's different than sharpen only after convert to SD, since after convert to lower resolution many fuzzy little details desapears and can't be enhanced anymore, while if you sharpen before convert to SD many detail get strong enough to survive after reduce resolution.
Now you may ask:
Why Warner didn't did that if their DVD was from a high resolution digital restoration?A good question, and I also don't know why they didn't.
Steve Pendleton wrote:>although on a Blu-ray it's possible to get higher bitrates and quite impressive quality from SD material than using a DVD
Not just higher bitrates, but potentially also better greyscale, color gamut, etc. For material that doesn't pencil out for a new HD telecine, or where the source is at or near SD, it would be nice to see legacy transfers in full Blu quality but at 480p. You might be able to fit four or five films on one Blu that way.
I'm unsure if anyone has done this kind of "super SD." Maybe it isn't practical. You'd have to remaster to get the hybred format. It might not improve quality enough versus straight SD, or it might not lower cost enough versus a new scan. I'd love to see a four or five low-demand noirs or silents or whatever sold in an economical, space-efficient, higher-quality "super SD on Blu" format. When burn on demand goes Blu, you could roll your own anthologies.
To genuflect to the actual topic: gotta have AQOTWF! Uni is clearly the most improved studio of 2012. Hat's off!
/ SRP /
Keep thinking...