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This topic comprises 3 pages: 1 2 3
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Topic: How to achieve this level of JPEG?
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Bobby Henderson
"Ask me about Trajan."
Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001
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posted 02-21-2016 11:58 AM
quote: Ari Leedsw
It's amazing how many "film" projectionists know more about JPEG2000s than the basics of how film works or is printed.
I guess the industry going digital was good, for people like you.
Since you're new here you might not know some of the participants in this forum, including the guy who runs this site, are expert film projectionists. We have participants here with lots of experience running 35mm, 70mm and even 15/70 IMAX. Their knowledge about showing film and maintaining the film projection equipment is matched by very few people.
Others in this forum, such as myself, are not projectionists but are avid film fans. I do computer graphics work for a living, so I do know a good bit about JPEG and JPEG 2000 too. And in this particular thread we're just talking about plain old JPEG.
quote: Ari Leedsw
I laugh when I get in a 150GB hard drive with a "film" on it.
It should be terabytes. When I see a 2K "film" of Star Wars, which apparently wasted a lot of money, for no reason, shooting on 35mm film.
Even though this is getting off topic, how much do you really know about computer graphics and digital video? I have plenty of criticism for the current, limited standards of d-cinema. But I understand why some of the limitations are there.
Original uncompressed or lossless compressed masters of movies do measure in the terabytes in file size, even for a mere 2K resolution movie. But no studio is going to risk duplicating those things for regular movie theater use. They have their security concerns. Then there's the matter of practicality. It would take a lot more time for a d-cinema server to ingest a master-grade movie rather than one compressed to about 1/10th of its original size.
The latest Star Wars movie went out only in 2K due to 3D. Most d-cinema installations cannot play 3D movies in 4K resolution.
There's more than just resolution to consider when it comes to shooting movies on film. The film medium has an aesthetic quality video cameras have struggled to mimic.
quote: Ari Leedsw
Not as bad as this, but the same shitty principle of trying to charge $15/ticket to see consumer-grade garbage.
Even though d-cinema has certain suck-tastic qualities to it, like its horrible implementation of 'scope, it's not consumer-grade garbage. As good as Blu-ray is for home viewing it is definitely on a quality bar below d-cinema -and Blu-ray is the best consumer video format. Lots of people are watching much lower quality video via Netflix.
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Ari Leedsw
Film Handler
Posts: 53
From: Stoughton, MA
Registered: Feb 2016
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posted 02-24-2016 05:52 PM
Steve, not only is that statement ignorant of actual use, there is an explanation for lb (lbs is wrong), although it's a joke and it's generally rude to pedantically over-analyze something designed to make people laugh ![[Cool]](cool.gif)
Lb is an abbreviation for the Latin "libra." In fact, in Spanish, pounds are referred to as una libra (a pound) and libras (pounds). However, getting back to lbs being wrong, Spanish only retains Latin's accusative case, making it a very active language, LOL, always to and for everything.
Anyway, the [nominative] plural in Latin is librae, not libras, hence lb for singular and for plural. Doesn't make sense in English, makes perfect sense in Latin, see also the GBP sign which is a stylized abbreviation of the "L" in libra.
Speaking of England, they use pounds (lb) for weight too, as does Canada, as do many English-speaking Carribean countries. The notion that only the US still uses pounds is incorrect pro-metric propaganda that was implemented in the '70s to push America to metricate.
Watch the Canadian Football League in the summer, or the NHL. Those statistics, height and weight in Imperial aren't done for teh benefit of American viewers. . .
Also, the pound is also a unit of mass. Before you make fun of "Merkins" again, perhaps you should look at the history of the metric system, which had similar systems in which the kilogram was a weight, not a mass.
It was originally defined as a weight, and a scale has to be used to determine the mass of the kilogram artifact, by way of the Earth's gravity.
There are a lot of sports, disciplines that use feet, pounds, inches worldwide. Those 65" screens are marketed as such even in France, the home of the metric system. Curling uses pounds, discus uses pounds, weight classes in boxing and wrestling are based on pounds. The PSI is used in Mexico.
Sorry, that's a particular pet pieve of mine, "US, Liberia, and Myanmar" shaming the United States. Clearly a piece of propaganda by someone who has never driven a car in the United Kingdom or Jamaica, for starters, or watched a game of Canadian football.
Don't even get me started on film lengths in meters. The 35mm sprocket hole pitch is based on 3/16" (0.1875") shortened to 0.187 and 0.1866 for print and neg. film, respectively. Film thickness is measured in thousandths of an inch. Coated in feet. Processed by the foot. Temperatures for processing designed and engineered in Fahrenheit.
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Marcel Birgelen
Film God
Posts: 3357
From: Maastricht, Limburg, Netherlands
Registered: Feb 2012
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posted 02-25-2016 12:21 PM
quote: Steve Guttag
Really? To steal from Trevor Noah...where how does Pounds abbreviate to lbs? None of those letters are in pounds! And you are worried about how bolts, screws and nuts add up? I live in a country where we work in base-whatever-the-fu#$-we-want is used. We don't use decimals...we use "/" so we can be "precise" with our 1/4-20 or 7/16 or 1/64...etc.
Well, it's really quite funny to see all those minor differences in interpretations... It's almost like a local Belgian phenomenon called Frituur or Frietkot, where you can order exactly the same item on the menu and never know what the local interpretation turns out to be (or what animal it was made from). For example, if you would like one of the signature items of this Frietkot "cuisine", which is generally known as "frikandel", you would have to simply order a "frikandel" in place A, order a "curryworst" in place B or a "hamburger" in place C. Which makes ordering a frikandel and a hamburger (as in the thing with a patty between two buns) in place C a delicate business.
For me, a screw is something that by definition comes without a bolt and usually isn't even suitable for a bolt. It's usually a self-fastening thing, with an helix at an angle and a wider pitch than a bolt.
A bolt usually requires something like a nut to be fastened, but if I would order a bunch of bolts, I would also automatically order the same amount of nuts. So, for me, a bolt always used to be the bolt minus the nut. ![[Smile]](smile.gif)
quote: Ari Leedsw
It was originally defined as a weight, and a scale has to be used to determine the mass of the kilogram artifact, by way of the Earth's gravity.
The gram is still defined by THE kilogram artifact, although they seem to be close to a consensus for a redefinition. The fact that gravity is most often being used for measurement of mass in grams (because it's easier than e.g. counting atoms or molecules...) doesn't imply gravity is also part of its definition.
quote: Steve Guttag
I don't doubt that there are people that value your posts, I am not one of them. Whatever points you may make seem to be shrouded in style of writing that has a degree of hostility.
For me it reads more like some misplaced feeling of superiority. A forum is a place to discuss things, it's not necessary for all of us to agree on something, but the problems usually start when one or more actors start to try to push others in a corner labeled inferior.
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