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» Film-Tech Forum ARCHIVE   » Operations   » Digital Cinema Forum   » 4K and 2K DCP have similar bitrates (Page 2)

 
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Author Topic: 4K and 2K DCP have similar bitrates
Pietro Clarici
Expert Film Handler

Posts: 136
From: Foligno (PG) Italy
Registered: Sep 2008


 - posted 09-07-2016 05:53 AM      Profile for Pietro Clarici   Author's Homepage   Email Pietro Clarici   Send New Private Message       Edit/Delete Post 
quote:
So why "gyp" the audiences with low bitrates for a movie? I don't get it!
Guess what? Cost. A smaller DCP can be duplicated faster, and it's easier and more cost effective to transfer it. Transponder time and bandwidth aren't cheap.

As Marco said, I had direct experiences of the *same* movie getting a very limited physical release in 4K (something like 10 drives for the whole country), and at the same time being delivered via satellite in low-bitrate 2K. I had to do bend over backwards to get Hateful 8 in 4K.

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Steve Guttag
We forgot the crackers Gromit!!!

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From: Annapolis, MD
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 - posted 09-07-2016 08:43 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
The compression is going to be a time to duplicate/download thing. As for 4K versus 2K...the rule of thumb is, if there is a 3D release of the title, then the 2D version will have a 95% chance of being 2K since the 3D, with current technology limits one to 2K except for Barco's Alchemy or dual projector 3D.

Warner Brothers seem to be a bit more notorious than others for compressing things a bit down too (not that there aren't exceptions to the rule(s)).

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Bobby Henderson
"Ask me about Trajan."

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From: Lawton, OK, USA
Registered: Apr 2001


 - posted 09-07-2016 01:39 PM      Profile for Bobby Henderson   Email Bobby Henderson   Send New Private Message       Edit/Delete Post 
quote: Pietro Clarici
Guess what? Cost. A smaller DCP can be duplicated faster, and it's easier and more cost effective to transfer it. Transponder time and bandwidth aren't cheap.
As a paying movie theater customer, I am not very sympathetic at all to that. From my perspective it's penny pinching, quality harming bullshit.

If the movie DCPs are going to be encoded at quality levels low enough that they're not on a quality tier clearly above that of consumer video then why should I pay so much more just to watch the DCP version? It's bad enough I see so many 'scope movies shown letter-boxed on un-masked, common width theater screens. Dumbing the bit rates down to near Blu-ray bandwidth gives the whole thing even more of a TV in public feel. Cheap, unprofessional, fast-food style showmanship.

The movie industry is going to cut its own throat in the long run by not being concerned about these details. The deciders think only a few nerds give a damn about this stuff. But it hits a lot more people on a subconscious level. Other kinds of consumer oriented businesses, like restaurants for instance, obsess over details.

I'm struggling to remember just when the last time was that I bought a movie on Blu-ray disc. It's at least a year, if not longer. And I'm supposedly more of a movie buff than most people. BTW, I don't buy virtual copies of movies to stream or store on hard disc either. This summer was not the best for the movie industry. It could be a warning for tougher times ahead. The studios' tactic of taking audiences for granted, spoon feeding them sequels, remakes, etc. might be starting to catch up with them. There are so many other options for entertainment out there and so little time.

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Pietro Clarici
Expert Film Handler

Posts: 136
From: Foligno (PG) Italy
Registered: Sep 2008


 - posted 09-07-2016 01:56 PM      Profile for Pietro Clarici   Author's Homepage   Email Pietro Clarici   Send New Private Message       Edit/Delete Post 
And as an exhibitor, I agree with you 110%.

But what can I do to change this? I can complain - and by the way, this is hopeless because no one at our local distributors actually knows what bitrate *is*, so they couldn't care less - or I could even refuse to show movies that I think are overly compressed. So, the month's blockbuster opens in every screen in Italy except mine: big ****ing deal, the distributor cannot even tell the difference.

It's abundantly clear that this is a slippery slope, but there is literally nothing we can do to stop these idiots except showing what they give us in the best possible way.

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Marco Giustini
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From: Reading, UK
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 - posted 09-07-2016 04:28 PM      Profile for Marco Giustini   Email Marco Giustini   Send New Private Message       Edit/Delete Post 
We have been showing horrible, awful, dreadful 35mm prints for ages and there was nothing we could do to persuade the distribution that they were going too far. I can't see what could be done with Digital to be honest. Hopefully the quality bar will stay high enough to provide a decent show.

I reckon there is a main difference between 35mm prints and Digital: with prints the lab may cut some corners and print xyz awful copies but not every cinema would get a bad one.
With Digital if the main OV master is massively compressed and it looks awful, then EVERY cinema would show the same disaster on screen. Hopefully that will prevent the quality to reach alarming levels.

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Edward Summerhays
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From: Sydney, NSW, Australia
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 - posted 09-07-2016 06:22 PM      Profile for Edward Summerhays   Email Edward Summerhays   Send New Private Message       Edit/Delete Post 
quote: Bobby Henderson
As a paying movie theater customer, I am not very sympathetic at all to that. From my perspective it's penny pinching, quality harming bullshit.
Agree with Bobby on this. I not at all oppose to digital, although problem with digital is, there are so many temptations to be lazy. All the 'benefits' of digital seem to benefit the studios, and not the consumer.

I live in Sydney, and am lucky to be near the largest cinema screen in the world. I have gone back time and time again to watch movies made by Christopher Nolan, projected in IMAX 1570, because of the care he puts into his films.
He even edits photo-chemically, to preserve the quality. That dedication to the cinema experience has be going back to see the same movies time and time again, even though I own them on blu-ray (I have seen Interstellar twice in IMAX 1570, and haven't even cracked the seal of the blu-ray I own).

He doesn't have the mentality of "well it will save a bit of time in data transfers to do it this other way".

4K cinema is getting me back into looking forward to seeing movies at the cinema, because it's superior quality to what I can experience at home (although I guess that gap is closing also). I guess my point is, the studios should priorities the cinema experience over what might save them a few bucks.

I read someone online, although can't verify if this is true, someone inquired to Disney why The Force Awakens didn't have a 4K DCP. They said it was due to time and budget constraints. Yes, the movie that made $2billion couldn't afford a 4K DCP [Confused]

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Monte L Fullmer
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From: Nampa, Idaho, USA
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 - posted 09-07-2016 07:14 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
quote: Edward Summerhays
Mechanic is 4K, according to this http://digitalcinema.bydeluxe.com/site/dlxportal/docs/Mechanic_Ressurrection_-_US_Release_-_DTDC.pdf

Rest are 2K

Who did the layout on this page didn't proofread too well:

The actual CPL naming string shows 2K, but the description below lists a 4k scope image.

To be safe: we use the CPL naming string and compare it to the naming string on the drives and what's listed in the library.

-Monte

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Matt Russell
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From: Aurora, USA
Registered: Aug 2015


 - posted 09-07-2016 08:42 PM      Profile for Matt Russell     Send New Private Message       Edit/Delete Post 
quote: Monte L Fullmer
Who did the layout on this page didn't proofread too well:

The actual CPL naming string shows 2K, but the description below lists a 4k scope image.

To be safe: we use the CPL naming string and compare it to the naming string on the drives and what's listed in the library.

This isn't exclusive to Mechanic; Now You See Me 2 and Nerve also claimed 4K scope on the sheet but the files were only 2K. All three are Lionsgate titles so it's probably a mistake caused by the company.

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Pietro Clarici
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From: Foligno (PG) Italy
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 - posted 09-08-2016 06:03 AM      Profile for Pietro Clarici   Author's Homepage   Email Pietro Clarici   Send New Private Message       Edit/Delete Post 
Full disclosure: I don't share Nolan's views. I certainly agree that the industry should strive to get every workflow to its absolute best, but I don't think "analog" processes like 70mm shooting and photo-chemical editing are necessarily better. They help create a very specific aestethic which Nolan is very fond of, but I think other great authors and directors of photography have shown that digital done right, with current-gen cameras and 4K digital intermediate, can be just as good.
quote: Edward Summerhays
He doesn't have the mentality of "well it will save a bit of time in data transfers to do it this other way".
That's the point: of course he doesn't, but neither did Tarantino or Scorsese. The local distributor screwed up in a phase that was beyond their control, and created 2K over-compressed DCPs for Hateful 8 and Wolf of Wall Street (which to my best knowledge were distributed in 4K everywhere else) without the directors even knowing. I don't know why they were allowed to, but that's what happened. And to me, that's deeply worrying: it shows that they think they'll get away with substandard files, because customers won't notice. And that they don't care at all about theatrical presentation, because in the end it'll be easier to just do digital day-and-date releases.

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Bill Brandenstein
Master Film Handler

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From: Santa Clarita, CA
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 - posted 09-08-2016 04:55 PM      Profile for Bill Brandenstein   Email Bill Brandenstein   Send New Private Message       Edit/Delete Post 
Pietro, forgive me if I sound vehement in my disagreement, but no. On a standard theater screen, yes it's possibly true, though your later comments explain well why it often doesn't turn out so well for the consumer. But Nolan's work in 1570 is a truly awe-inspiring spectacle that no digital workflow can compete with. Yet. So let's take Imax out of the discussion and then I can agree.

The studios are in it to turn a profit first, not for the highest quality, and certainly not for artistic ideals. Oh, nevermind, why am I preaching to the choir?

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Steve Guttag
We forgot the crackers Gromit!!!

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 - posted 09-08-2016 06:03 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
I've yet to see ANY DCP image that compares favorably to 5/70, let alone 15/70. Furthermore, I've yet to see any DCP conversion of a 65mm source that looked favorably to 70mm presentation. Thus far, the best example I've seen has been Samsara which was shot 65mm (5/65) and proceeded through high res. digital workflows for a 4K output on DCP. The best outright conversion I've seen was Oklahoma! but it was a far cry from the original.

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Monte L Fullmer
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From: Nampa, Idaho, USA
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 - posted 09-08-2016 07:54 PM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
Heard buzz that if you took a resolution count on actual 15/70mm prints, the numbers would be like in the 32k plus range.

5/70mm was lower - down in the 16k plus range.

Still, analog still has it won over digital.

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Bill Brandenstein
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 - posted 09-08-2016 09:13 PM      Profile for Bill Brandenstein   Email Bill Brandenstein   Send New Private Message       Edit/Delete Post 
It's all in how you count it. Some 2K DCPs look fantastic and crisp, and some 70mm looks soft. No point in starting another analog-vs-digital shouting match here (not that I'm accusing anyone).

At some point, analog-to-digital scanning just becomes more definition of the edges of the grains. At the other end, digital 4K or more is nothing special if the lenses, workflow, and so forth don't use the extra pixels efficiently.

Right?

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Bobby Henderson
"Ask me about Trajan."

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 - posted 09-08-2016 11:34 PM      Profile for Bobby Henderson   Email Bobby Henderson   Send New Private Message       Edit/Delete Post 
quote: Pietro Clarici
I certainly agree that the industry should strive to get every workflow to its absolute best, but I don't think "analog" processes like 70mm shooting and photo-chemical editing are necessarily better.
I'll give you one very clear example where film-based production, work-flow and exhibition are far better than digital: 'scope format presentation. The 2.39:1 'scope format is the most popular aspect ratio for Hollywood movies. And it's a pathetic, low resolution, low quality JOKE when digitally projected in commercial movie theaters. Simple as that. It is SHIT. It is a LIE.

On the 4-perf 35mm film platform, the 2.39:1 'scope format was the biggest, brightest, highest resolution format. It looked better than flat ratio movies because it used all the negative of the 4/35mm frame. In D-Cinema, 'scope movies go to the extreme opposite end of the spectrum because their images are the smallest and lowest in resolution. Compounding the problem even worse: thousands of newer theater screens have HDTV shaped screens where 'scope images are letter-boxed regardless of the projection setup. Traditionally 'scope movies are supposed to be bigger than regular movies. They all had the same screen height in the past, but the 'scope movies opened up to more expansive widths.

With all the stupid corner cutting and quality compromises that have taken place with d-cinema I feel like the movie watching experience at home is not really inferior at all to the commercial theater movie watching experience. The content in both mediums are treated in very much the same way. It wasn't that way with film.

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Monte L Fullmer
Film God

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From: Nampa, Idaho, USA
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 - posted 09-09-2016 03:49 AM      Profile for Monte L Fullmer   Email Monte L Fullmer   Send New Private Message       Edit/Delete Post 
When I was at REG and playing with SONY's, when I get 4K content from Columbia (Sony) and shoot it through a 4K Sony projector, you had a real nice sharp image on the screen where one can definitely tell the difference between 2 and 4K presentations.

The trick in seeing this difference is with FLAT features, so the LCoS chipset can be used to its capacity.

-Monte

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