@@Neojhun okay but I’m just unsure because it’s not designed for consumer function but I don’t know just not sure how it would work I suppose if you had a dvi adapter it would work but how would you hook up the audio
We used to put together the reels on a round table, and thread the film from the middle to the projector and back to another round table. We watched movies after the theater closed for the night on a Thursday just to make sure the movies were spliced together correctly. Lot of fun! Very interesting and informative video!! Great job
Projectionist was my favorite job EVER! I Started in the late 70's in the Tyler theater(Tyler,Tx.) a classic Movie Palace that had a baby room with speaker and a large picture window in the rear of the auditorium. The projection booth still had the safety lines, a cord with soft metal couplings above both carbon-arc projectors that in the event of a fire would separate and drop metal covers over all the window ports. These were important not for the lamp houses but for the films used to be on VERY flammable Nitrate stock. The door to the room was heavy steel. The films came on 12" reels 4 or 5 to a can and were a "joy" to carry upstairs through the balcony to the booth. The reels were inspected to be sure the head was out then loaded on the projector. As the film ran out the RPM of the upper wheel would increase activating a mechanical bell to alert the operator it was almost time for a "change over". If you watch older films, about 15 - 20 minutes in there will be cue marks in the upper right of the image usually round( sometimes a star). The operator would start projector #2 then 10 seconds later a second set of marks would cause operator to flip the change over switch shutting off sound and light from #1 transferring to #2 machine.
Wow! It's so easy now. I was a projectionist in England in the early 1980s and we had to carry up to 10 x 20-minute reels of 35mm film up the stairs to the projection room - it was heavy, 'The Deerhunter' was 15 reels! We had two projectors operating; one was showing a reel and the other was being prepared for the other reel, and you had to ensure a seamless change over when the dots appeared top right of the screen to flip the switches from one projector to the other. Then the rewinding, boxing, and preparing the next reel. It was hot and hard work. Now it seems as easy as watching this youtube video 🙂
That's crazy. Cool to know though. Can't imagine doing that. Did that ever ruin watching movies in general for you? I'd probably never want to watch a movie even on dvd after having to fuss with the pain of just playing one
Great video and thanks for the info- I worked in a theatre years ago and learned how to run the old "CARBON ARC projectors" at an old movie theatre in the 1980's. I was wondering if there was a hard drive for each "print" but you answered it, as like right now "Dr Strange" can be in as many as 7 (or more) different screens. I would gather that the IMAX and 3D were totally different files, but it is great to see that one hard drive can "Share" on five screens at once. When I worked for a film company back in the 90's a film that would run a lot would get scratched up and eventually, would be melted down. The first time I ever saw a digital print "Attack of the Clones" it was driving me crazy as there was no scratch marks- but now I am used to it. Thanks for the video and the info.
I used to go to the cinema a lot. From the early 70s to the early 2000s. I went a lot in the 70s/80s where you routinely had to sit through: ads, supporting feature (if it was a Disney film you may have been unlucky and watched a film over an hour long) cartoons, ads then the main film. You often got a break mid-film if it was long or between the supporting feature and main film. I noticed a shift in the early 80s when summer blockbusters became a thing (roughly starting with the first Indiana Jones film) where the supporting feature was dropped but the cartoons (there were often multiple) were not. With ads and break it often added over an hour to the film. So my question is, why, when you often had to queue around the block to WAIT to get even a ticket, did they waste time with hours of supporting features? Without them you can get more shows per day, you sell more tickets and queues are smaller. Often you would be queuing for hours outside waiting to see if you could even get in and get a ticket. I queued for hours to watch Superman only to be told there were no tickets left and I had to wait for the next performance (another 3 hours, lolz). I never understood why.
Movies revenue rely on the adverts and Concession sales. In 1997-8 when Titanic came Out out local multiplex played Titanic in a Mid sized cinema. Do I also had to wait around tue corner to Find out our next show was 4 hours later this forced us either to come back or watch another Movie while waiting. It was a good strategy. By the time Spiderman came out We would loop 2 reels amongst 4 Theatres and would fill them up. Made more sense however all the other movies playing were empty. Titanic ran for almost 10 months in our theatre and I personally saw it 3 times. Pros and cons to both I guess but it was a good way to let people watch other movies.
Same here. I worked as a projectionist all throughout the 90s threading actual film. It's all so robotic and lifeless now. Extremely sad watching this. 😥
thanks for putting this together. it wasn't easy to find some info on this in this day and age. most search results are showing me how old projectors work or how to set up a home movie projector haha. this is good info!
I think it's sad to be honest. By the way, most cinemas now don't have curtains. The good old days of going to the cinema had very subtle but noticeable glitches and eccentricities. This added to the character and atmosphere of the experience. Also, now there's nobody there to manually focus when the film is slightly out of focus. This happens a lot actually.
Interesting. I used to be a projectionist back in the 1990's. Film projectors were hell. Sometimes on Thursdays you would be at the theater breaking down and compiling film from reels until 6AM, maybe more. Films would sometimes fall off of platters and be ruined at the rundown theater I worked at, because the projectors were old, and the platters would wobble unevenly and force films off onto the floor. I also once assembled an ancient Bollywood film that took I think about 45 splices to put together. The crowd that rented the theater thanked me because the film "only" broke 2 or 3 times during the film. The not so good old days.
I recently watched Captain Marvel and during the scene where Danvers is on planet earth and talking to Yon-Rogg the film started the lag for every 5 minutes. A member of staff then asked us to remain on our seats as the team behind is going to restart the film and play the scene where it left off.
Hi, we rented one of the cineplex here in Toronto for our church worship service, my problem is how can we tap our audio system to the cineplex system to maximize the good quality of the sound with our praise and worship band? What is the best setup to come up with.
Hi is there any small kind of projector that can be used in movie theater saloon?I am talking about a projector with the size of regular home projector!
I worked at a movie theater in the 60s-we did not have those big reels--We had 2 movie projectors with welding rods as the light source-about every 30 minutes we would switch projectors--no digitials in those days just que marks notice to switch projectors
Random guess, but I'm thinking maintenance. It seems like it would be a lot easier to replace a projector than a specific part of an LED, OLED or Plasma screen.
Michael, it's not about maintenance. I replace the faulty tiles in 5..10 minutes. Samsung released onyx LED screen. But is really expensive!!. Half of milion € for... let's say 100 square meters. Also you have some issues with the front speakers LCR and Sub. And as a 3d system, for the moment you can use only active one (xpand).
No... if something touches the screen, you are going to have a bad time If a 5 pixels or more stop working, people will complain If the movie doesnt fit in the screen, you are dead If a part of the tv gets damaged, it will take wayyy more time to fix it It requires way more energy and is a really bad idea.
Someone throwing a large drink full of liquid at an LED screen wouldn't have a great outcome for all, compared to a white canvas screen that can be wiped down after the film. People also throw ice cubes, popcorn and maybe solid objects as well. Upset a crowd with a terrible film, or a few punk kids would be very expensive to fix rather than projecting bright light which is far cheaper
I actually remember sometimes when I went down to one of the cinema's called Odeon I could be watching a movie let's say flushed away when that was still new and you'd be watching half the movie on the screen and half on the wall 😂😂
Very distinctly Australian indeed. BUT, only one variation of many. I personally sound nothing like that in the slightest. I don't really have much of any stereotypical give-aways. Which I think is becoming common across the world as people become more connected through newer ways of socialising, and media. Among other reasons.
Thanks for the video but one question that i still have is how these movies are being protected from pirating? And how does the studio give up the rights for the movies to be played at the cinema? Are they secretly coded or something?
I am not 100" sure. But I believe that the digital movie files are encrypted when sent to a theater. They use a key (file package) the unencrypt it for a predetermined amount of time.
@@modifiedreality8855ye they do, it's called kdm. And as for the piracy, ushers screen check to make sure no ones on their phone. The security cameras are also in infrared so u can see very clearly if someone's on their phone
Peter, there are two different things. The digital Cinema projector is designed to project a big image ..let's say 200 square metters. Your 800$ TV has 50..55. inch. or around. In tthat Cinema they are using Barco series C, with Dolby 3d dfc100. You can check on Barco website what that projector can do.
What kind of recivers do cinemas use, i know amplifiers are used to power speakers becuase 1 reciver cant do all that powering itself, but that looks nothing like compared to something yamaha or dennon would use at all.
Just for all... that projector is 20,000 lumen Barco and 2K resolution is not “twice” as detailed as 1080p. It’s just wider! And NO ONE plugs in an Xbox in a cinema!
I remember the IMAX near me offering hourly rates to play Xbox games on their screen. 480p on that wouldn't be too sharp but it would've been quite fun.
Imagine playing porn on that LOL! It actually did happen in my country in the business district. There was a big projector outside a big building for adverts and the naughty operator was watching porn hub, he must have forgotten to switch his PC for the adverts. THEN BOOM all the cars passing by was recording it posting it everywhere... It was the talk of the day HAHAHAHAHA!
This was good. I really enjoyed this tour of current technology. It was perfect, right up to the end where you said 'sit down and enjoy a film'...which this isn't...you can't call it a film anymore. Its a MOVIE now...sigh...(Film is not dead)...
I miss the old days of running film. From 20 minute reels for 35mm to the heavy ass 70mm film reels. That`s what killed most of us old timers backs. For the ppl that ran film that job is over because there`s nothing to do now. Technology wins again. Next time you go see a movie notice how shitty the movie looks on the screen, usually there`s a white light that runs right across the middle of the screen. What crap.
Used to love playing CoD and Halo on the big screen after close. Lol
A cinema projector supports hdmi?
🧢
@@GringoXalapeno On digital projectors they most likely have DVI. Which is what HDMI is based on.
@@Neojhun okay but I’m just unsure because it’s not designed for consumer function but I don’t know just not sure how it would work I suppose if you had a dvi adapter it would work but how would you hook up the audio
@@GringoXalapeno Just use the audio output out of your console or PC. My favourite is Toslink Optical.
We used to put together the reels on a round table, and thread the film from the middle to the projector and back to another round table. We watched movies after the theater closed for the night on a Thursday just to make sure the movies were spliced together correctly. Lot of fun! Very interesting and informative video!! Great job
Projectionist was my favorite job EVER! I Started in the late 70's in the Tyler theater(Tyler,Tx.) a classic Movie Palace that had a baby room with speaker and a large picture window in the rear of the auditorium. The projection booth still had the safety lines, a cord with soft metal couplings above both carbon-arc projectors that in the event of a fire would separate and drop metal covers over all the window ports. These were important not for the lamp houses but for the films used to be on VERY flammable Nitrate stock. The door to the room was heavy steel. The films came on 12" reels 4 or 5 to a can and were a "joy" to carry upstairs through the balcony to the booth. The reels were inspected to be sure the head was out then loaded on the projector. As the film ran out the RPM of the upper wheel would increase activating a mechanical bell to alert the operator it was almost time for a "change over". If you watch older films, about 15 - 20 minutes in there will be cue marks in the upper right of the image usually round( sometimes a star). The operator would start projector #2 then 10 seconds later a second set of marks would cause operator to flip the change over switch shutting off sound and light from #1 transferring to #2 machine.
interesting
wait, i thought film was in the 1890'S
Wow! It's so easy now. I was a projectionist in England in the early 1980s and we had to carry up to 10 x 20-minute reels of 35mm film up the stairs to the projection room - it was heavy, 'The Deerhunter' was 15 reels! We had two projectors operating; one was showing a reel and the other was being prepared for the other reel, and you had to ensure a seamless change over when the dots appeared top right of the screen to flip the switches from one projector to the other. Then the rewinding, boxing, and preparing the next reel. It was hot and hard work. Now it seems as easy as watching this youtube video 🙂
Thats why i feel that cinemas lost its flow nowdays. I just can put on a movie on my screen at home and enjoy it. No big deal
@@csch92 well what if it isnt out yet?
That's crazy. Cool to know though. Can't imagine doing that. Did that ever ruin watching movies in general for you? I'd probably never want to watch a movie even on dvd after having to fuss with the pain of just playing one
Great video and thanks for the info- I worked in a theatre years ago and learned how to run the old "CARBON ARC projectors" at an old movie theatre in the 1980's. I was wondering if there was a hard drive for each "print" but you answered it, as like right now "Dr Strange" can be in as many as 7 (or more) different screens. I would gather that the IMAX and 3D were totally different files, but it is great to see that one hard drive can "Share" on five screens at once. When I worked for a film company back in the 90's a film that would run a lot would get scratched up and eventually, would be melted down. The first time I ever saw a digital print "Attack of the Clones" it was driving me crazy as there was no scratch marks- but now I am used to it. Thanks for the video and the info.
I used to go to the cinema a lot. From the early 70s to the early 2000s. I went a lot in the 70s/80s where you routinely had to sit through: ads, supporting feature (if it was a Disney film you may have been unlucky and watched a film over an hour long) cartoons, ads then the main film. You often got a break mid-film if it was long or between the supporting feature and main film. I noticed a shift in the early 80s when summer blockbusters became a thing (roughly starting with the first Indiana Jones film) where the supporting feature was dropped but the cartoons (there were often multiple) were not. With ads and break it often added over an hour to the film. So my question is, why, when you often had to queue around the block to WAIT to get even a ticket, did they waste time with hours of supporting features? Without them you can get more shows per day, you sell more tickets and queues are smaller. Often you would be queuing for hours outside waiting to see if you could even get in and get a ticket. I queued for hours to watch Superman only to be told there were no tickets left and I had to wait for the next performance (another 3 hours, lolz). I never understood why.
Movies revenue rely on the adverts and Concession sales. In 1997-8 when Titanic came
Out out local multiplex played Titanic in a Mid sized cinema. Do I also had to wait around tue corner to
Find out our next show was 4 hours later this forced us either to come back or watch another
Movie while waiting. It was a good strategy. By the time Spiderman came out We would loop 2 reels amongst 4 Theatres and would fill them up. Made more sense however all the other movies playing were empty. Titanic ran for almost 10 months in our theatre and I personally saw it 3 times. Pros and cons to both I guess but it was a good way to let people watch other movies.
Crazy to see how much the tech has changed since I was a projectionist back in 99
Same here. I worked as a projectionist all throughout the 90s threading actual film. It's all so robotic and lifeless now. Extremely sad watching this. 😥
could a Switch be plugged in and Breath of the wild on big screen?
Oh shit that would be awesome
Yes thays what I'm doing today
Really enjoyed this! Thankyou Sam, Subscribed
Rachael Mac same
This was super interesting. Always wanted to know how cinemas worked.
Thanks Sam!
thanks for putting this together. it wasn't easy to find some info on this in this day and age. most search results are showing me how old projectors work or how to set up a home movie projector haha. this is good info!
I think it's sad to be honest. By the way, most cinemas now don't have curtains. The good old days of going to the cinema had very subtle but noticeable glitches and eccentricities. This added to the character and atmosphere of the experience. Also, now there's nobody there to manually focus when the film is slightly out of focus. This happens a lot actually.
Actual movie film projected onto a screen has a more real-life quality. The colors and tones are natural
Interesting. I used to be a projectionist back in the 1990's. Film projectors were hell. Sometimes on Thursdays you would be at the theater breaking down and compiling film from reels until 6AM, maybe more. Films would sometimes fall off of platters and be ruined at the rundown theater I worked at, because the projectors were old, and the platters would wobble unevenly and force films off onto the floor. I also once assembled an ancient Bollywood film that took I think about 45 splices to put together. The crowd that rented the theater thanked me because the film "only" broke 2 or 3 times during the film. The not so good old days.
i sat down at my computer and said " i wonder what goes on up there during the movie" and now im here
Imagine plugging in a PS5 into one of these puppies
I saw someone on tiktok rent a theater and plugged there x box and it was huge
@@yodaiam6993 bruh moment
@@yodaiam6993 This channel has a video like that
you forgot to describe DCP & KDM.
I recently watched Captain Marvel and during the scene where Danvers is on planet earth and talking to Yon-Rogg the film started the lag for every 5 minutes. A member of staff then asked us to remain on our seats as the team behind is going to restart the film and play the scene where it left off.
BIOOOG OLF
You didn't miss much. Be grateful it happened during this film rather than a good one
What program that it used?? The UI looks like winXP does it support current format ?
What is the benefit of hooking up your laptop or Xbox to it?
The audacity "exactly the right time" its 30 minute after the right time thank you very much
Hi, we rented one of the cineplex here in Toronto for our church worship service, my problem is how can we tap our audio system to the cineplex system to maximize the good quality of the sound with our praise and worship band? What is the best setup to come up with.
But how do I send movies to a whole bunch of theaters? Before I make my own movies, I want to know how to distribute movies.
Hi is there any small kind of projector that can be used in movie theater saloon?I am talking about a projector with the size of regular home projector!
......how about a regular home project
how will i buy this projector . what is the your cinema screen size ?
I love going to the movies
In Soviet Russia, movie love going to you!
I worked at a movie theater in the 60s-we did not have those big reels--We had 2 movie projectors with welding rods as the light source-about every 30 minutes we would switch projectors--no digitials in those days just que marks notice to switch projectors
Ah man - we didn’t get to see the amps or speakers. :-(
*My question is...*
How come cinemas still use projectors?
Wouldn't it be cheaper and better quality to use a large LED, OLED or Plasma screen?
Random guess, but I'm thinking maintenance. It seems like it would be a lot easier to replace a projector than a specific part of an LED, OLED or Plasma screen.
Michael, it's not about maintenance. I replace the faulty tiles in 5..10 minutes. Samsung released onyx LED screen. But is really expensive!!. Half of milion € for... let's say 100 square meters. Also you have some issues with the front speakers LCR and Sub. And as a 3d system, for the moment you can use only active one (xpand).
No... if something touches the screen, you are going to have a bad time
If a 5 pixels or more stop working, people will complain
If the movie doesnt fit in the screen, you are dead
If a part of the tv gets damaged, it will take wayyy more time to fix it
It requires way more energy and is a really bad idea.
Someone throwing a large drink full of liquid at an LED screen wouldn't have a great outcome for all, compared to a white canvas screen that can be wiped down after the film. People also throw ice cubes, popcorn and maybe solid objects as well. Upset a crowd with a terrible film, or a few punk kids would be very expensive to fix rather than projecting bright light which is far cheaper
It would be tremendously more expensive to have an led panel that size.
There's no disc to insert into each projector? That's what I was told by a movie thearer I went to.
finally one of my childhood mysteries has been solved
Is the computer smart enough to know if a DCP has at say 7.1 or Atmos and to play said 7.1 or Atmos.
Wow that was fascinating. And here I was thinking film was still being used.
I actually remember sometimes when I went down to one of the cinema's called Odeon I could be watching a movie let's say flushed away when that was still new and you'd be watching half the movie on the screen and half on the wall 😂😂
Superb... thanks for the briefed sharing 👌
This is so interesting! Thanks for the explanation!
Really informative. Gave me a great understanding of how DCP's work.
All that tech and I still have to bring a extra napkin to tear up for emergency earplugs.
2 K projector.. jeepers would have though 4k would be standard and 8K in some higher end cinemas
This was in 2017. I'm sure by now 4K is definitely the standard.
@@jamesroman9576
4K is in only 17% of screens worldwide. 2K is still the standard.
Imagine the projector lamp fails and switch off when a movie is playing.
they dont run the sound processor on 7 anymore ? I see its on 4.5
7 was reference but way too loud for digital
@@CravingTheMagic one time I was at arch light in LA and they had it on 8 and it was no problem crazy I hear Dolby Cinema runs there's on 7
@@JunkerDC it report l really depends on the gains on the amps and how the sound is calibrated and room size
Thank you i wanted to know how it works.
Interesting! Thanks!
Wondered how movies are shown in the theaters. Thanks for explaining.
Why do u sound like Korg from Thor:Ragnarock.....!!
Enjoyed your video, cldnt stop laughing on the voice...!!
Cheerz
Hey man
Very distinctly Australian indeed. BUT, only one variation of many. I personally sound nothing like that in the slightest. I don't really have much of any stereotypical give-aways. Which I think is becoming common across the world as people become more connected through newer ways of socialising, and media. Among other reasons.
Sounds nothing like Korg.
Thanks for the video but one question that i still have is how these movies are being protected from pirating?
And how does the studio give up the rights for the movies to be played at the cinema?
Are they secretly coded or something?
I am not 100" sure. But I believe that the digital movie files are encrypted when sent to a theater. They use a key (file package) the unencrypt it for a predetermined amount of time.
@@modifiedreality8855ye they do, it's called kdm. And as for the piracy, ushers screen check to make sure no ones on their phone. The security cameras are also in infrared so u can see very clearly if someone's on their phone
Since he mentioned Xbox I still would find it awesome if I could play my Xbox on the big screen!
Wait, this $30,000 projector is only 2K? My $800 TV is 4k.
haha this comment must be a joke.
@@francofx No, you can really get 4K TV's for $800, no joke.
@@peterp2626 I got mine for $600 in NZ. lol
Peter, there are two different things. The digital Cinema projector is designed to project a big image ..let's say 200 square metters. Your 800$ TV has 50..55. inch. or around. In tthat Cinema they are using Barco series C, with Dolby 3d dfc100. You can check on Barco website what that projector can do.
Its because,projector is dinosaur tech,projector only good 2 things compare to modern oled
Tho,samsung gonna change all this wif its wall led cinema
Why cant we njoy 4k content in theaters?? Like having a big as tv rathrr than projectors
Imperial791 Cuz that's expensive as shit
Its Expensive. Theatres are already losing money with people bringing in their own food.
4K is nice, but most movies aren't even made in 4K, only 2K.
Yes, 2K is more than FullHD.
128 Width pixels more: 2048x1080
Someone managed to plug their phone into one of these humongous projectors! It worked!!
So film isn't used at all anymore? Now I feel old.
Thats a 1080p projector 😂
2k pretty much is 1080p but it’s most movies and movie theaters that use it
@@GringoXalapeno 2K is 1440p
@@levly not really it approximately 2000x1080 sometimes slightly more but that’s the standard it’s just 1080p but wider
@@levly
No. 2K is 2048×1080.
What kind of recivers do cinemas use, i know amplifiers are used to power speakers becuase 1 reciver cant do all that powering itself, but that looks nothing like compared to something yamaha or dennon would use at all.
THANK YOU SIR #TECHNOLOGETIC
Why not put Gucci Gang on the screen
About time someone asked the questions we're REALLY asking
jakub gamer Because it’s a shitty fucking song. I wouldn’t even call it a song. It’s just an obnoxious crap mess of noise!
Why not put the stereotype song but with ch
Thanks!
This is illegal. NO FILMING IN THE THEATERS.
Just for all... that projector is 20,000 lumen Barco and 2K resolution is not “twice” as detailed as 1080p. It’s just wider! And NO ONE plugs in an Xbox in a cinema!
I remember the IMAX near me offering hourly rates to play Xbox games on their screen. 480p on that wouldn't be too sharp but it would've been quite fun.
Ye they do, we play switch on ours
How do I watch movies for free and watch sonic 2 again? #football life
film?
Why are they using windows 95 is what i want to know
That was cool. Thank you for sharing.
I want to work at a cinema just to see all of this in person
you know it can project things like xbox or playstation or laptop... oh yeah and the movies too.
1:11 peep xyz‘s ac
Seriously 5.1 Channel??
Imagine playing porn on that LOL! It actually did happen in my country in the business district. There was a big projector outside a big building for adverts and the naughty operator was watching porn hub, he must have forgotten to switch his PC for the adverts. THEN BOOM all the cars passing by was recording it posting it everywhere... It was the talk of the day HAHAHAHAHA!
i love it
I thought movies just automatically hit theaters.
Very interesting thanks 👍
This was good. I really enjoyed this tour of current technology. It was perfect, right up to the end where you said 'sit down and enjoy a film'...which this isn't...you can't call it a film anymore. Its a MOVIE now...sigh...(Film is not dead)...
Designsbyg my lord are you that ignorant who CARES what he calls it
I thought nowadays they use a big tv......
Nova 720 nah they still do it like if it was the stone age.
Bruh. look like 90 degrees behind you and you'll see the damn PROJECTOR! lol
Unless u in that samsung cinema,90% still use good ole dinosaur tech
Ten TB that’s it
I take it the other projector can take real reel film, seems to have the drum on it. And better quality than digital.
😃
Can u send me new movies
This is not cinema. Not real cinema. It’s just a very big screen TV.
Add a public comment...
looks like Linux.
Most is linux
Impressive, but if the power goes out, we have nada.
Yes but you could sat that about any other business?? It's runs on electric obviously
What a disget.
I miss the old days of running film. From 20 minute reels for 35mm to the heavy ass 70mm film reels. That`s what killed most of us old timers backs. For the ppl that ran film that job is over because there`s nothing to do now. Technology wins again. Next time you go see a movie notice how shitty the movie looks on the screen, usually there`s a white light that runs right across the middle of the screen. What crap.
Digital's much better, shut up with that unproven nonsense.
That never happened to me
ok boomer