Full Length Uncompressed Films in our future?

A complete waste of space. I'd much rather we looked at things like 4:4:4 and greater than 8bit colour depth.

I'd be VERY satisfied with 4:2:2 10-bit color.

Basically.

Compression is a wonderful tool that allows us to do very great things.

The desire for having everything "uncompressed" is an irrational and unproductive desire. What we really want is higher quality, and compression is a critically important tool in achieving the best possible quality given space and bandwidth limitations.

nice way to contradict yourself

Pardon? Where am I contradicting myself? Perhaps you misread?

All we need are those holographic versatile discs that hold something like 3 terabytes...

I've always thought asking for greater compression + higher bit-depth/colorspace is a bit ridiculous. The irony in this expectation is that the more compression you heap onto the material, that is completely at odds with maintaining the fancy 10-bit performance (or even 8-bit, for that matter) and chromance detail. Those 2 areas are prime areas where information/detail is thrown out, when it comes to hyper-compression exercises.

If one is to really value bit-depth and colorspace performance, I believe the ticket is less aggressive compression rates. Keep things lightly compressed, and you achieve the best space economy while maintaining the performance of the raw, uncompressed original content.

There is 0 interest and 0 value in going uncompressed.
An uncompressed 3 hour film would take about 1.6TB of storage.

1920 height x 1080 width x 24 bits / pixel x 24 fps = 150MB / sec.
180 minutes x 60 sec x 150MB /sec = 1.6B.

Figure some space for overhead and audio lets say a 2TB disc with 1.5Gb/sec transfer rate.
Holographic may be able to do this within a few years but why?

Higher res screens are coming to market. 4K x 2K = 8.3MP displays (4x the resolution of 1080P). Higher bit color is coming, etc.

Figure VC1 gets about a 60:1 compression ratio with near perfect quality.
A 4K x 2K image with 48bit deep color would be around 13TB. Using less compression than used on the very best HD DVD you could get that down to about 300GB.

So:
Uncompressed 1080P with normal color = 1.6TB and 1.6Gb transfer rate
Compressed 8MP (quad HD) with 48bit deep color = 300GB and 300Mb transfer rate.

The compressed quad HD format would be much higher level of detail and require less advanced technology. Not that we will see either anytime soon but if you had a choice for a new format in say 2015 which would you want?

Nonsense.

High compression schemes are being outpaced by processing power. Processors are powerful enough to do real-time decompression. So lossless compression really should be the point of interest. The encoding/compression time of the source material doesn't really affect the end-user.

Uncompressed Quad!

You wouldn't believe what an uncompressed movie looks like, even at 480i. It's incredible.

I haven't seen the Sharp but I guess the amount of "amazing" would depend on both the quality of the display and the content being displayed. I have seen some 1080P monitors that look worse than a high quality 768P.


Well uncompressed 1920x1080 @ 24fps and 24bit color is 1200mbps. Most VC-1 titles are less than 20mbps. Thats at least a 60:1 compression. Even mpeg2 offers about a 20x - 30x compression ratio.

I would like to see 4K movie at 120fps in 3D with full 10 bit colorspace, i think you will see it faster then you think.

if you check out best buy you will see almost no non HD TVs for sale. you will see very few non flat screens, and you will see the new 50-57 inch LCDs selling as fast as they come in.

margins on the largest size screens are very good, but the cheap ones made in china are getting bigger and better every year. the top tier LCD makers have to keep making bigger sets to sell for the 2000-3000 price that they make money on. at some point they will run out of size, there is only so big you can go. after that they have to add something that will set them apart from the chinese sets. the only option they have is to go higher contrast ratio, higher frame rate, more color space and last higher resolution.
sets are already announced that do 50k to one contrast and some may do 120fps. color space was upped for HDMI 1.3 set could start showing up to use it. projectors that have 4K res are already planed and LCD flat panel makers will be showing them for 2009 or 2010 time frame.

this is why i think we will see the holographic disks at some point, around 2010 they should start showing them with a roll out in 2012. they may show up faster if the current HD disks fail or the CP is truly broken.

i do 3D computer art, i have a Dell 3007WFP that is 30 inch LCD with 2560x1600 with a custom polarization screen it is fully stereoptic. so i can do 720p HD stereo now. 3D lcd will evolve from the two view LCDs being shown now, these are the ones that let two people watch diff shows from the left and right.

this is the progression that i think LCDs will take

32 Bit Color?
That would be cool!

And a way to replicate. Duplication might not be viable.

Gary

Is there such a thing as lossless video compression? What are the results?

Gary

I irrationally cling to the idea of "uncompressed" even though it will give me much poorer quality video.

"I want uncompressed video" basically means "I want crappy, low-definition content."

please enlighten us as to how uncompressed video can only ever be in low def.

Absolutely. Where would we be without Phil Katz's (RIP) PKZip?


So that's why I prefer CDs to MP3s. I'm at fault, not the technology.


Lossless compression is critical to achieving higher quality. Data reduction, which is more often than not confused with compression, is simply sacraficing quality to a limited degree to yield much smaller files that are easier to transport. Data reduction is a hack, lossless compression is a golden tool. I'm not disagreeing with you here, I'm just clarifying that there are two distinct processes.

But once you have 3 TB, do you want 1080p 4:2:0 8-bit uncompressed, or 4K 4:4:4 12-bit compressed ?

Compression is all about increasing bang for the bit. Unless you have effectively infinite bits, compression give a far better experience at a given data rate.

some people hate the idea that a single pixel could be somehow different from the uncompressed source

these are the 'princess' consumers... and only they can feel the pea

It's lower def than you could with the same data compressed. Compression allows for an increase in quality at a given data rate and filesize.

...but a decrease in quality from the original state of the content.

rough night's sleep on the pea eh?

Maybe one of the genius compressionistas here can straighten me out on the nomenclature, then... because when I get too close to my TV, I see the fact that it's "compressed." Parts of the picture move and other parts don't. I don't know what you guys who say compression is better than no compression are talking about. I've seen an uncompressed movie playing and it's far and away a more 3-D, lifelike effect -- and at a mere 480i.