4K Movies Releases

[jscoggins]

Originally Posted by hajiketobu

?

[Penton-Man]

Originally Posted by hajiketobu

Are you sure this is the 4K version?

Yes, see the Interstellar hyperlink quoted below for explanation…

Originally Posted by Penton-Man

Plus, ‘seeing’ doesn’t give him the ability to talk the talk or walk the walk. For that, one needs educating, e.g. with Interstellar…. https://forum.blu-ray.com/showthread...se#post9956015

Originally Posted by hajiketobu

Because it states a resolution of only 2048x858, which is not 4K.

As was noted before…

Originally Posted by Penton-Man

Excellent ‘official’ source, but hardly infallible

[Penton-Man]

If that still doesn’t make sense to you, ‘4K’ in the later half of that long line of numbers and letters refers to ~ 4K resolution (actual image size depends on whether the motion picture is flat or scope).

Note to SoCal locals for the Holiday season. There is a limited special engagement of Interstellar at the CSC, scroll down a bit…. http://californiasciencecenter.org/imax/imax-schedule

[hajiketobu]

Originally Posted by Penton-Man

If that still doesn’t make sense to you, ‘4K’ in the later half of that long line of numbers and letters refers to ~ 4K resolution (actual image size depends on whether the motion picture is flat or scope).

I'm sorry, I don't get what you are trying to say. Isn't cinemascope 4K 4096×1716 and 2048×858 2K? If that listed DCP is only 2K that would explain the small size of
226GB, as opposed to Dark Knights 302GB DCP.

Or are you implying that there is a misprint on this website, either in the file name "...DBOX_4K_ PC..." or the image format "2048×858" ?

[jscoggins]

Originally Posted by hajiketobu

I'm sorry, I don't get what you are trying to say. Isn't cinemascope 4K 4096×1716 and 2048×858 2K? If that listed DCP is only 2K that would explain the small size of
226GB, as opposed to Dark Knights 302GB DCP.

Or are you implying that there is a misprint on this website, either in the file name "...DBOX_4K_ PC..." or the image format "2048×858" ?

http://www.interstellarmovie.com/formats/

The 35mm anamorphic prints have been made photochemically, preserving all the rich analog color and high resolution of the original 35mm anamorphic photography. This is combined with new 4k negatives produced from 8k scans of the IMAX original negatives, cropped top and bottom to create a seamless 2.40:1 scope image. The sound is coded on the prints in Dolby SRD for a 6-track digital playback experience in most theatres.

[hajiketobu]

Originally Posted by jscoggins

http://www.interstellarmovie.com/formats/

"The 35mm anamorphic prints have been made photochemically, preserving all the rich analog color and high resolution of the original 35mm anamorphic photography. This is combined with new 4k negatives produced from 8k scans of the IMAX original negatives, cropped top and bottom to create a seamless 2.40:1 scope image. The sound is coded on the prints in Dolby SRD for a 6-track digital playback experience in most theatres."

Why are you posting this? This is totally off topic. We were talking about the digital representation of the movie which is available in 4K and 2K, not about the 35mm anamorphic prints. Can you provide some information on what you are trying to communicate and not just post a link to the tech spechs of interstellar which probably everyone here knows about?
The question here was, if that listed 226GB DCP is the 4K version or the 2K version, simple as that.

[Richard Paul]

Originally Posted by saprano

As for 4KBD, the more space it has and less compression the better. I don't care how good a compression algorithm is. That's how i feel about anything carrying alot of data actually.

The compression method is important since in general for 4K at 60 fps video 50:1 compression with Motion JPEG would look horrible but 500:1 compression with HEVC would look great.

Originally Posted by hajiketobu

I'm sorry, I don't get what you are trying to say. Isn't cinemascope 4K 4096×1716 and 2048×858 2K? If that listed DCP is only 2K that would explain the small size of
226GB, as opposed to Dark Knights 302GB DCP.

What Penton was saying was that the website made a mistake and that Interstellar does have a 4K DCP.

Originally Posted by hajiketobu

The question here was, if that listed 226GB DCP is the 4K version or the 2K version, simple as that.

It is 4K.

[hajiketobu]

Originally Posted by Richard Paul

What Penton was saying was that the website made a mistake and that Interstellar does have a 4K DCP.

Alright, thank you very much.
I was secretly hoping that it was 2K, so there would be an ever bigger filesize 4K DCP out there

[singhcr]

Originally Posted by Penton-Man

Poked, punctured, bruised, sore and still terribly drugged up but home in time for Christmas. BIG Thanks for all the well wishes from Geoff D, singhcr, PeterTHX, Blu-Dog, reanimator, Richard Paul, saprano and my guardian angels in heaven, your thoughtfulness will not go forgotten.

I’m alive, kicking and ‘officially’ not aphasic secondary to the throwing any clot during the heart procedure. To discern whether the later (no aphasia) is truly correct, I’ll verbalize all the words as I’m typing them out in the next few posts I make today.

Here goes….

You're welcome! I am so happy to hear you're all right.

[Penton-Man]

Originally Posted by hajiketobu

...Or are you implying that there is a misprint on this website, either in the file name "...DBOX_4K_ PC..." or the image format "2048×858" ?

I’m uncertain but, yes, I’m implying image format “misprint” by having you defer to the “file name” for it’s possible the image format could be incorrect as listed. I think it less likely that the DCP creator placed an actual image size of 2048x858 in a 4K container…if that is the thought you’re considering. To what end? A 2K container is perfectly capable of holding an image size of up to 2048x1080.

As an aside, anyone know or care to guess roughly what would be the approximate file size of a typical (just 2K, 2D) uncompressed feature film?

[Penton-Man]

Originally Posted by hajiketobu

The question here was, if that listed 226GB DCP is the 4K version or the 2K version, simple as that.

Although there are cases of separate “versioning” being done in the past, there is really no need due to projector system interoperability, e.g. for years, the original DCI specification has required that compliant projector systems be capable of playing 2K or 4K DCPs regardless of whether they are 2K or 4K projector systems.

So, if a motion picture’s finishing was done at 4K or higher (http://www.interstellarmovie.com/formats/ ), be it either from a typical DI workflow or the scanning of celluloid (as was the case with Interstellar) a separate ‘2K version interop DCP’ in addition to a ‘4K interop version’ would generally be a redundant practice leading to an unnecessary post production cost.

[Penton-Man]

Originally Posted by Penton-Man

generally

I say ‘generally’ because with 4K source material, it could be argued that making a maxed out (average 250 Mb/sec data rate) separate 2K DCP would possibly look superior to the 2K strip out from a 4K DCP because during mastering, the 4K DCP could rob bits from producing an optimally (maxed-out) compressed 2K layer potentially resulting in a perceptible visual difference to the human observer…. so the quality playback on a 2K projector may not end up being as good looking as just having a 2K DCP (as opposed to a 4K DCP) and the vast majority of installed digital projectors around the world are indeed 2K.

But I think that ^ advanced concept of which is superior (a *robust* 2K DCP vs a typically compressed 4K DCP) is beyond the scope of this discussion, not to mention quite speculative due to the dependence upon the nature and technical details of the source images (the particular motion picture itself).

[Penton-Man]

Originally Posted by singhcr

You're welcome! I am so happy to hear you're all right.

Thanks, I’m home and doing o.k. Health aside, Christmas is always bittersweet for me in that both my parents have now passed and they were such an integral part of that celebration, especially my Mom.

All I can say to those here still with living parents is not to take for granted the time you have with them, especially around the holidays, because it is precious. And take LOTS of pics!

[Geoff D]

Penton, I'll take a guess at the uncompressed size for, say, 10-bit DPX files on a typical 2 hour 2K feature. Somewhere between 1.5 and 2 terabytes?

[Penton-Man]

Originally Posted by Geoff D

Penton, I'll take a guess at the uncompressed size for, say, 10-bit DPX files on a typical 2 hour 2K feature. Somewhere between 1.5 and 2 terabytes?

Good rough guess. To narrow it down even closer, think 2 TB.

[Penton-Man]

I’ve answered all my PMs (including an international one from Germany ) and I’ve still got a few minutes before noon to gab/post, so allow me to review some past postings from over the past several days that I may not have commented upon or something new that’s come up in the interval.

[Penton-Man]

Originally Posted by Blu-Dog

...You know how to pronounce it, be honest and tell us if you can do it with both eyes pointing in the same direction.

No problemo. I can do that and have verified as such the lack of strabismus ?sp. for you by having looked into my bathroom mirror and saying… meTAMerism.

Dog, please don’t ask me to try it while open-mouth kissing my wife. For I already know…no can do, as my tongue can not do two things at once.

[Penton-Man]

Originally Posted by Penton-Man

One problem is the absolute maximum allowed data rate for the JPEG 2000 images in a DCP for DCI compliance is 500 Mb/sec, source...

On a housekeeping note, seems the hyperlink initially posted in the third paragraph of the source ^ has since expired. But I think this one will go thru… http://www.dcimovies.com/Recommended_Practice/

[Penton-Man]

Addendum to… https://forum.blu-ray.com/showthread...m#post10171874

One quality I see not mentioned in this particular ‘LG hedging its bets’ article…. http://www.hdtvtest.co.uk/news/lg-qu...1412213964.htm is that QD is a significantly good tool for reducing power consumption utilized for the display of HDR images.

[Geoff D]

Originally Posted by Penton-Man

Good rough guess. To narrow it down even closer, think 2 TB.

You're right, at 12MB per frame it's just over 2TB for a two hour feature.