This Invention Made Disney MILLIONS, but Then They LOST It!

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Four years ago, we learned about Disney's magic prism that created the best transparency mattes. We thought that prism was lost... until we found it.
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00:00 Greenscreens Suck
01:19 The Science
03:25 How Is This Working?
04:24 Squarespace
05:21 The Experiment
07:47 Compositing
09:55 The Results

[@RustyGellerSteadicam]

I was one of the last people at Disney to use the Sodium Vapor light system. It was on "Something Wicked This Way Comes" in 1982 or 3. I was an vfx AC at the studio. The prisim was held under license from Rank. It was a hallowed object. It was kept in a steel box and it was studio policy that 2 AC's had to be with it at all times when it was removed from the storage locker. We both carried it to the stage, then carefully inserted it into the 2-strip camera. It was never left alone on stage, we took turns leaving for lunch, the john, etc. It hadn't been used for years but we had a series of tough matte jobs to shoot so they dusted off the old gear. I was aware I was watching a bit of history. The key was the didymium filter in the prism. That thing has to be around somewhere. Technically, Rank would still own it.

[@adamhock8801]

Wow, thank you for the utterly fascinating info about the wild life that crystal has had.

[@slamp3844]

Woha interesting!

[@topio]

Who is/was Rank?

[@panicraptor2837]

@@topio developed in England by the J. Arthur Rank Organization

[@richardemerson8075]

Super cool story!!

[@aycoded7840]

Award for the least clickbait video with the most clickbait title. This is so cool.

[@St4rdog]

Ignored this video in my feed for 6 days because I thought it was clickbait.

[@TheBanancer]

@@St4rdog same

[@vintage-radio]

​@@St4rdogI ignored it because I had smth else to do, and then i forgot this channel existed for 6 days. also, I think the clickbait is working since they almost got 3 mil views in 6 days. Last video that got even close to that was the AOT one 2 months ago that got 2.5 mil

[@Ciboullete]

Fr

[@tomsmarkovs1946]

I avoided this video because I thought it was clearly clickbait. Cristal, forgotten magic?. . sure. :D

[@Eric_In_SF]

Props for a big KZbin channel that actually marks where their sponsorships are so you don’t feel like you’re being fed valuable information and realize you’re being tricked into advertising.

[@zaicol850]

Tbf a lot of big channels who use chapters do this. But yeah, it is always appreciated

[@ralfclearsky4193]

Sometimes the fact that I developed a nose for such things scares me.

[@i.t.y1140]

You sound like you're new here

[@d.-nf6lb]

Things like this is why youtubers in every corner of the internet have talked about their love of corridor

[@HahaHumon]

Yeah this is such amazing stuff.

[@its_jeron806]

Yeah, I remember back when they did that stuff with Ai, people started badmouthing them, but they could never make me hate corridor.

[@LQABP]

It’s impossible to hate Corridor.

[@lxlMrSatan]

Is that a movie?

[@kraken2844]

dude I've been watching corridor for many years. They never dissapoint, but this video was almost emotional for me. y'all stumbled across a gold mine here

[@Nighthawkinlight]

FYI, your sodium lamps should be upsidedown or sideways for longevity. If you have the electrodes on the bottom they'll get dripped on by sodium which will eventually cause the bulb to fail. If used properly LPS bulbs will last pretty much forever. This is a very clever technique. Well done

[@BrandanLee]

G&E Wizard Wisdom.

[@robertheinrich2994]

I remember, they were present pretty much everywhere. tunnels, street lights, etc. they were pretty long lasting and surprisingly efficient. you get just one wavelength, but that with a very high output, illuminating a large area.

[@nj1255]

@@robertheinrich2994 Last time I saw one used outside here in Sweden was when I was a kid in the early 00's. It was in a pedestrian tunnel under a road, and I remember it was always so trippy walking through that tunnel. Everything looked black and white (or rather black and yellow).

[@hoon_sol]

@@robertheinrich2994: Those lights were so warm and comfortable (not thermally, but emotionally), real shame they stopped using them much.

[@PJ-oe6eu]

​@@hoon_sol For me those lights remind me of cold sketchy places, and stinky bathrooms so that "junkies have a harder time finding a vein"

[@MonsieurDoge]

The ancient dark arts of video compositing... the prophecy has been fulfilled.

[@matthewboire6843]

This is somehow true

[@jaimefenger3730]

Lissan Al... you know the rest

[@darosamath]

That`s exactly how the Lisan Al Gaib would do video compositing

[@1zymn1]

@@darosamath LISAN AL GAIB!

[@SameerN23]

THIS PROPHECY IS HOW THEY ENSLAVE US!

[@BknMoonStudios]

This is actually incredible and extremely useful, specially for low and mid-budget film productions. This technique severely cuts the amount of work hours necessary in editing, while also giving higher quality results. This can drastically improve the quality of videos and movies at a relatively low cost. Massive props to everyone involved in this project.

[@Th1sUsernameIsNotTaken]

It'd be worth it in high budget too. They could utilize the effort of having to change 400 different settings constantly to make it "perfect" into other portions of the film. CGI would probably be drastically improved in film compared to what it is now.

[@christie_brown]

The only giant limitation I would say is when it comes to shooting outdoors. Earlier in the video, they needed to block the skylight. Like, filming with natural light is already a pain (trust me I’ve been there). But now you have to make sure All of that natural light doesn’t spill into the lighting of both your foreground AND background . It’s basically all the difficulties of controlled green screen lighting times 10

[@koiyujo1543]

YES DUDE THAT"S WHAT I THOUGHT THIS COULD REVOLUTIONIZE ALL OF FILM PRODUCTION!

[@ariDeMon7479]

@@christie_brown why would you need to film outdoors if you're replacing the background anyway?

[@sophiadebar382]

@@christie_brownthe thing is, you only ever film outdoors on a set when you DONT need to replace the background. Everything else is filmed indoors over a green screen. So you wouldn’t need to use this technique outdoors because you’re already getting what you want

[@howtodrink]

This is so incredibly cool. I've known *about* the Sodium Vapor Process for years, but never actually had the clearest idea of how it worked. LOVE seeing this. In the front-screen projection that was used on 2001 and, also Aliens because Cameron is James Cameron, there was a special 3M reflective material that was necessary for the projection surface. Did the original sodium process use a special reflective backdrop, or was it basically just a cyclorama?

[@batsukamuro]

In just over 12 minutes, I went from zero awareness to thoroughly impressed.

[@SamKramer]

Same. I had no idea I would love this video so much

[@TomCruz54321]

I actually avoided this video because I thought it was gonna be clickbait, but I was wrong. This video is legit. I think that's one of the downsides of clickbait culture, a lot of legit videos are getting avoided because the viewers are weary of their time getting wasted.

[@kitschking]

same here

[@Alistair]

@@TomCruz54321 I think you meant "wary", but impressively, "weary" is also correct here..

[@andrewqsmith]

Yeah reall agree. I never questioned how Mary Poppins was made compared to newer technology. I learned a lot and really impressed with the execution of this. It would be cool to see this used more.

[@unitNitro]

those original 3 prisms are, like, the closest things to ancient magical artifacts that exist. *wisened old sage voice* “This crystal has the power to alter Reality itself, using the light of the dawn”

[@michaelmoore7975]

It was wise not to reveal the arcane practice of _Blackfire._ Blackfire can be accomplished by igniting alcohol while illuminated with low pressure sodium lighting. The normally invisible alcohol flame is pure black....and creepy.

[@maverickstclare3756]

sat on someone's shelf somewhere as "cool crystals"

[@Corpomancer]

Reality is far closer to having ancient artifacts littered all around us, only matters how we look at things like in this case a Room for one colour.

[@hulkhatepunybanner]

*MacGuffins for the next Marvel/Star Wars/Pixar movie.*

[@lawrencefrost9063]

CRINGE ALERT

[@edwardchester1]

Slightly mindblowing that a relatively simple alternative solution like this can be used and thus proves the worth of the process yet the process was dropped. It's so clearly superior.

[@malachilynch2979]

"If I wanted to make a video of a clown wearing all the colors of the rainbow getting married on Mars, I couldn't. That bothers me." New favorite statement unlocked.

[@HalogenFEAR]

I was looking for this comment lol

[@Nathan-jt8zt]

No longer true, though

[@theengineer2017]

@@HalogenFEAR Copied someone already commented this and the dude legit copied the whole thing and added "New favorite statement unlocked."

[@HalogenFEAR]

@@theengineer2017 I guess it's exusable as the text, If I wanted to make a video of a clown wearing all the colors of the rainbow getting married on Mars, I couldn't. That bothers me, is from the video. I heard that statement and almost wrote my own comment about it. It's most likely not a copied comment but good observations none the less.

[@kyoopihd]

You know, despite the fact that you guys have simply re-created something that was invented more than half of a century ago, it really feels like new ground was broken here for some reason. Kinda gives me that real heart uplifting feeling watching this. Loved it!

[@deadplthebadass21]

Well if you think about it, they did, like they said the other one was hard to recreate and it only had three, this one is easier to recreate, if you ask me I think that's pretty special

[@HerbaMachina]

​@@deadplthebadass21they could have just done a very similar thing to what they did here back then too, the whole custom diffraction crystal was overkill in the first place. It's really just the difference between operating budgets and how far money could really go back then.

[@KironX1]

We still can’t replicate some of the stuff divinci made so…

[@thespamman2119]

​@@KironX1but they already replicate it, just have to share it lol

[@JinKee]

@@deadplthebadass21and it is better because you can use different band pass filters to choose other colors and use lasers to illuminate the backdrop

[@KnitterX]

I love how the quest for this forgotten technology involved a search for long lost prisms of which, according to legend, only three have ever existed. If this was the plot of a video game you would call it absolutely unrealistic and uninspired.

[@BrandanLee]

That's how I feel about light field cameras, haha

[@kumble2687]

The legend of Zeldzaam - The invisible cloak

[@IIARROWS]

Yes! Totally! 3 prisms... boring.

[@vast634]

Raiders of the lost Prism.

[@uberfu]

I mean ... think about how much physical property and assets Disney owns. Then think about having to track and catalog the sheer logistics of maintaining data on literally nall of it and somehow not losing anything over the course of 100 years. Yeah, you try not to lose anything. OF COURSE if they'd patented the process - there would be records of how to reproduce the prisms on file at the USPTO. And ironic that they fight tooth and nail over Mickey Mouse copyright variations but were lackadaisical about something like this.

[@iamasquidinspace]

I feel like there has to be at least one cinephile solid state physicist somewhere in the world who has the ability to recreate the original prism with their knowledge. So, wherever he or she is: this is your time to shine!

[@alt3241]

I know someone with Disney film editing , compositing and animation equipment their father wanted me to revive and interconnect , their father died before I got the chance to rewire it back together 15 years ago . I do not know the current equipment disposition and I was the only person alive he knew who could make it work again . It is nice to know there are people still enthusiastic about these technologies . I know how to make similar filters and have used some of these lamps for machining .

[@lukegordonharris]

Just want to point out for people who don't know, Paul Debevec is one of the researchers responsible for a whole bunch of modern VFX techniques, just check out his resume and website, it's like reading through the origin story of most of what we use today.

[@HelamanGile]

Yep he is awesome learned about him In film School

[@LuisSierra42]

He's been in Corridor before

[@vke6077]

what an amazing man

[@GoblinAU]

I spent many hours playing with that Rendering With Natural Light demo back in 1998 and had no idea Paul Debevec was behind it. Great stuff.

[@KategariYami]

Oh, well met Luke

[@13lood13ath]

"If I wanted to make a movie about a clown wearing all the colors of the rainbow getting married on Mars, I can't. That bothers me."

[@jttech44]

"And I took that personally"

[@XliverXD]

And. He proceeded to resurrect long lost revolutionary photographic items just to make that huge respects

[@vyor8837]

@@XliverXD Revolutionary... for 60 years ago.

[@XliverXD]

@@vyor8837 but it wasse losttt

[@dorugora]

It sounds like something from Death Stranding.

[@RobertPatrician]

Gotta love when Cooridor makes a video that'll be shown in filmmaking classes for decades.

[@KoiKittenVA]

Every time I'm given a history lesson on early film making, I'm always so amazed by the thought of just how much science and innovation went into these processes.

[@TheHiddenGamer65]

“Disney would like to know your location” 😂

[@Mfdoorway]

Is Mickey in the room with us right now?

[@Tajarim88]

Especially if you're a minor and on your own.

[@635574]

And probabaly pay a lot to get these made

[@foxthroat3410]

Disney rn tryin' their best on how to sue them 💀💀😂

[@MimicMocktopus]

DISNEY wishes to DISable your spine.

[@ghost_ship_supreme]

Someone somewhere has one of the prisms on their desk and don’t even know it. Congrats on rewriting the future of films!

[@Aelux5216]

Using it as a paper weight no doubt

[@chilly456]

I have a tiny one!!!

[@ElveeKaye]

There are glassmakers who could probably make these things. They just have to shop around for them.

[@MisakaMikotoDesu]

More than likely it's in storage at some warehouse for some company that owns the rights to it. I do warehousing for a living and it's incredible how much stuff just gets outright lost, even important stuff. You'd think bigger companies are better at not losing stuff, but the bigger the company the more stuff that gets lost.

[@MCXL1140]

@@ElveeKaye Disney tried for years to replicate the original, and gave up. It's incredibly hard to make a perfect light rejection prism.

[@globalizer]

It's amazing to think how many great ideas are lost to the specific components. Kudos to Paul for realizing all you really needed was the concept and finding a way to recreate it.

[@DDoubleVT]

Somewhere out there, there are three legendary prisms of incredible power waiting to be discovered again.

[@eujuneca]

This feels like the end of a cycle. They have talked about this prism sooooo many times. I'm happy for them to be able to replicate it, even if the original prism is lost in Disney's vault

[@RamDragon32]

As a guy that was raised around engineers and artists, I'm sure it's sittin on some guy's mantel or computer desk collecting dust with other random knickknacks and the owner having absolutely no idea of its historical significance. it's a pretty glass cube. Or in a vault kicked under a rack somewhere. Sure.

[@41nhs]

Apparently, the actual prism itself is located at The Walt Disney Family Museum in San Francisco on display for all to see, from what I discovered through research.

[@allio3459]

its not lost at disney. its in safe keepings

[@mrcydonia]

@@41nhs But there were two others. Where are they?

[@chadsmo]

@@RamDragon32I feel like you missed a good chance to use the word tchotchke instead knickknack. Next time.

[@ChasFink]

I've read that the quality of the original sodium vapor camera/prism was something of a happy accident, and two attempts to make new ones were not 100% successful. The fact that you could make such a great recreation relatively easily and cheaply is amazing. I do hope the original is not lost. It belongs in a museum.

[@RicardoMusch]

I read this as well! I guess we live in a day and age now where things that took a lot of precision and skill are now just more reachable and less costly to produce :)

[@maih600]

@@RicardoMusch I find it a little funny that they failed to recreate the highly technical filtered beam splitting prism and never considered that they could just filter the outputs separately rather than doing so within the prism, as they did here. Or maybe they did and the trouble was with creating a narrow band filter at exactly 589nm, which would make more sense, and because of laser sciences we just have a more mature understanding of the processes involved.

[@OriginalUnjustifier]

Indiana Jones? That you?

[@zteaxon7787]

​@@maih600The chances are real that these techniques were appropriated by "secret" services and used for propaganda. Deliverately kept from the industry and public.

[@pharlock]

they just used a normal beam splitter then filtered the output of it.

[@whatsthat9408]

[This video has been removed]

[@benbot5173]

Seeing a lost technique discovered, with the people who know it’s significance and are in a place to use it (not to mention passionate as alll hell about what they do)? Magical

[@MoofyYT]

Actually incredible. This has probably got to be in the top 3 if not 1 episode on Corridor.

[@rosumparat]

I was just about to say that.

[@leoelliondeux]

It’s definitely one of the episodes of corridor crew.

[@VAKZ23]

Yes, a fitting word “discovery” yeah its an age old forgotten tech but mannn , they just revived it and now the possibilities are now endless at this point

[@TypicalBlox]

not enough wren brings the ranking down

[@ShaakunthK]

This is probably my favorite non-Vfx artist explains stuff video. Wren's videos just hit different. Primarily because they do what they say. Use visual medium to dumb down things people should have an idea of. I can't imagine being able to share this as someone's first Corridor video, which I can do with Wren's videos. But I can share it to someone curious about old school vfx.

[@HansPunk]

For those interested in the original (and often uncredited) people behind the process: Vic Margutti was a key participant in Rank Films travelling matte work- possibly with or under Bryan Langley. Vic left Rank to form a sometimes volatile creative partnership with Les Bowie as Bowie-Margutti Films. In 1956 Margutti was lured back to Pinewood UK to develop the new sodium vapour matte process - which proved very successful and would be adopted Stateside by Ub lwerks and Eustace Lycette at the Disney corporation as their travelling matte methodology of choice for decades.

[@biffmercury]

I read that when presented with the script to THE 3 WORLDS OF GULLIVER (1960), Ray Harryhausen insisted on doing it in England, where he could get access to the sodium vapor process. Even then, Harryhausen didn’t want to fool with the often unreliable blue screen process. He used the process on GULLIVER, THE MYSTERIOUS ISLAND (1961), and JASON AND THE ARGONAUTS (1963). Apparently it was no longer available to him for THE FIRST MEN IN THE MOON (1964), which utilized blue screen. Oddly, the technique was used on Herman Cohen’s KONGA (1961), and about the only impressive thing about that movie (and apparently the VFX person responsible for it, wasn’t credited on it, perhaps by choice). I wonder if it was used on THE CRAWLING EYE (1958).

[@Rhoasckm]

This is so wild, I can't believe how good it looks. I mean even watching shows like Supernatural and seeing how rough the greenscreen looks in them, really makes you wonder why this hasn't been delved into already. Hopefully studios will start picking up this technique, this is really great work

[@TinchoX]

I'm actually impressed, did not believe in the title, thought it was clickbait! 😮

[@joelcaporalemedia7471]

"if you think your rig is janky, they're all janky" gave me so much hope for my rig

[@Maddolis]

Good luck with your janky rig Joel

[@bielanski2493]

If there were such a thing as a "universal rig" we would all rent it like a panaflex.

[@raccoon9951]

This has got to be one of the most impressive things on all of KZbin actually! The footage is so perfect with the sodium vapor, actually unbelievable

[@baptistoriginals]

I agree, i'm often wrong but i really think these guys have stumbled on to something big for the industry of filmmaking

[@smittyvanjagermanjenson182]

The only thing more unbelievable is the fact that Disney built this technology 60~ years ago and apparently decided to stop using it.. this is the holy grail of keying footage!

[@fabfourdub1284]

This is a bit sad to see that people think this is impossible to do this, cause in fact it was done by many company other than disney and there is plenty of patents in the last 60 years to proove it. I guess the problem is not the technology itself, but that no one put money into pushing aside greenscreen, to help movie making to move forward and put to garbage this greenscreen keying create in the 1930's. 😢

[@raccoon9951]

@@fabfourdub1284 it’s still impressive

[@GweiTheLeafChild]

It's probably by the economics of it, green screen is much cheaper to mass produce, and it was probably a matter of logistics. The results to cost must have been acceptable enough to push the compromises onto the creatives.

[@ramirezproductions0826]

The fact you guys were able to recreate and reutilize an long forgotten, but still extremely effective technique that helped shaped the VFX world is DEFINITELY one HECK of an accomplishment!!! 😁

[@manu144x]

This was honestly amazing, I never would have imagined this kind of technology, using yellow and a prism.

[@GarageBandSuperheros]

"One of the coolest, the most high tech things we've ever done." As he's holding a piece of a cardboard box. That made me chuckle.

[@janthran]

cardboard is kind of high tech

[@TopatTom]

THE ALMIGHTY… Cardboard???

[@jzero90921]

idk man cardboard is kind of a miracle. Most things arent shipped in crates or barrels now, instead its cardboard boxes. Obviously some things will still be crated, but the majority of consumer goods are gunna be put in a cardboard box. Its as high tech as we got right now.

[@jakewilferd6093]

@@TopatTom my dad used to tell me one of our greatest achievement's during WW2 was when the Japanese sent us the world's smallest drill bit and we sent it back with a hole drilled through it. sometimes the smallest thing's or thing's we don't think are impressive are the most impressive.

[@GarageBandSuperheros]

As I'm looking into a rabbit hole of cardboard, I'm actually stepping my brain back a bit. Just imagine them: Paper towel tubes, foil tubes, sheets, business cards, cereal boxes, Cracker Boxes, Everything Little Debbies, Birthday cards, Playing Cards, Egg Cartons, Literally anything bought online over 2 pounds in weight, Jigsaw puzzles, Poster Boards, Printer papers, Hardcover Books, Election cards, Testing Punch Cards, Milk Cartons!, Cardboard Furniture?! [which is a thing apparently], 3D Display Models!, School STEAM projects, Cigarette packs, A Oyster Pail for your Chinese Food!, Freaking Juice Boxes, THE FLIPPIN PIZZA BOX! It's everywhere, lol. It haunts me now. :P And pretty much anything modern electronic/technology based comes in a petite little..... CARDBOARD Box

[@karlmuster263]

The idea to use an "off-the-shelf" beam splitter and filters is one of those brilliant ideas where you're like, "why hasn't anyone done this before?"

[@SmallSpoonBrigade]

I'm guessing that there weren't that many people trying. Especially in the digital age when you can mask things based on any channel of the image. There's no inherent reason why you have to use green or blue for the masking, those are just the most commonly used ones.

[@Appletank8]

According to wikipedia, well first off only 3 were made, so if you wanted to use it, you better get in line. Second, it seemed that computers got good enough they were able to composite well enough, and tech advanced towards fixing it better and better. Software, once perfected, can be replicated a functionally infinite amount of times, along with the person who trained on it. A hardware solution needs to be made one at a time, and unless they acquire one for themselves, is probably stuck with the film company.

[@filanfyretracker]

off the shelf filters exist because LPS lamps are often used around observatories for street lighting, the same reason they are used in this effects shot. An extremely specific frequency of light. Meaning it can be filtered without losing what one is looking for.

[@VisibleReality]

@@SmallSpoonBrigade with digital cameras, green is most often used for marking because it is often has a higher quality than red or blue due to how the sensor is designed

[@mrblah02251]

If I understand correctly (which is a big if), the original method uses all of the light and just redirects the sodium line. I think this setup is splitting all of the light and filtering the two halves. The advantage is that you don't need special prisms, but the disadvantage is that you cut your light in half. I don't know if low light is a major problem or not.

[@johnwenzel2003]

You did my favorate thing; you took a problem and literally turned it inside out. This is proof positive that VFX should never disguard the tenons of optics and that old technology is never invaluable technology. Bravo!

[@FabioAneto]

Guys this would be such a game changer for beauty commercials! At the beginning of April we were shooting a lot of footage in the back of a car in a tiny space and it was a nightmare putting the green far enough to avoid spills. Production WANTS this to come back! ❤

[@yehudalanger]

I originally read about this sodium vapor technique a few years ago, and after having been blown away by this ingenuity of having a perfect matte filmed simultaneously, I was super disappointed to learn that Disney lost this technique. As soon as this video popped up in my feed I was like “NO WAY..” but you guys actually did it.. time to bring this back to the filmmaking masses and rid ourselves of the cumbersome chroma key affliction. Well done.

[@TheMongooseOfDoom]

I had the same reaction. I new immediately what the video was about when I saw the thumbnail. I don't even do video production or anything.

[@MegaLokopo]

It isn't a lost technique it was retired, Disney decided it was no longer worth the effort, and it provides no benefit while having massive draw backs. Disney is simply so good at green screen this lazy technique isn't worth it. It also doesn't look nearly as good as good green screen.

[@GustavoOliveira-hq2dr]

What I got from the video isn't that the intent of bringing this back would be to use it as a mainstream technique but to use it as machine learning feed in order to improve the current green screen tech. There are other things to consider such as cost, accessibility, user friendliness and so on, but you can only do so much with an early prototype.

[@maih600]

@@MegaLokopo it’s difficult to set up, impossible for large sets or complex geometry, and requires an indoor studio and no natural lighting. That said, it lacks that sharp visual edge that screams effects and can easily do transparencies. If the technique was developed over the decades instead of retired, I think it would have a place in filmography, likely in creating background elements outside cars, windows, etc on closed sets that they want to appear to be outside/in space/wherever.

[@OriginalUnjustifier]

@@maih600 Exactly, this technique is a new tool(outside of Disney, at any rate), with use cases we haven't even begun to consider. Find those use cases, make a case to the major filmmakers, and develop it's place not as a replacement, but as a new option for shots that are not possible with existing techniques and tools.

[@ChanahAngelicaKamen]

This was like getting a magician to reveal the exact details behind his/her best illusion. What a freaking incredible invention, amazing that you guys were able to recreate it.

[@sterlthepearl1000]

"Search and you will find." Jesus Christ

[@kcdsTM]

The crazy thing is, they took the research and actually simplified and thereby improved on the design - this was made with off the shelf parts!

[@GS-td3yc]

@@kcdsTM its also that off the shelf parts are now way better.

[@mistingwolf]

This is genuinely fantastic tech! I hope studios will see the benefits of bringing back this filming technique.

[@Adovid]

Blown away- This is such an awesome resurrection of secret knowledge from the past. Nice work!

[@ExhaustedElox]

As someone that studied optics, I can tell you that building the crystal back in the day had to be so hard without modern micro and nanofabrication methods. Losing them probably set movie making back decades. It's so great to see this technique available again.

[@mewmew32]

they weren't lost. elsewhere in this thread someone said one is on display at the Walt Disney museum.

[@nicknorris100]

How do you know it is the real deal​@@mewmew32

[@timothyblazer1749]

In the 60s there were still people who could make custom, precision optics by hand, leftover from WW2. That's likely how those prisms were made, and also why they haven't been made since. It's the same reason we can't make the F1 rocket anymore.

[@storiesfromtheabyss9808]

Instead of micro nanofabrication methods, now you can use...😎Nico nanofabrication methods.

[@marcmann100]

Is it still hard to create a prism like that today? I feel like saying it‘s not possible is the same as saying „we couldn‘t build the pyramids today“

[@JustinDangerpants]

This is so cool. It’s one of those things where you take a step back from the processes you know and re-assess what the current technology and tools could be applied to solve problems we decided were already solved. There are so many things now that we haven’t even begun to figure out the combinations to and applications for. This is definitely one that is a win.

[@PeterMancini]

What a learning video this is, on the technique, the physics, experimentation, and open-minded thinking. Thank you for posting this.

[@EthalaRide]

This feels like a really good example of pre-production saving SO MUCH TIME in post-production. By finagling and getting all the lighting right, reducing spill, getting the camera set up, post is Infinitely easier. The greenscreen was probably lit as best as they could too, and yet still needed all that work. It really is magical.

[@Sacomoponycam]

I'm gonna be the grammar police, sorry in advance. Infinitesimal means a Very Very small amount. If post is infinitesimally easier, then it barely changed at all. "All the extra pre-production work made post Infinitely easier" would make much more sense.

[@howyhowitzer13]

Definitely has the same feeling of analog photography and all the setup and lighting versus digital photography where it is all post for sure.

[@thewisewolf768]

@@Sacomoponycam Nah, get'em grammar police are annoying, vocab police are needed. Words are important!

[@Appletank8]

It's biggest achilles heel is that it only works in a limited area, indoors, with no outside lighting. Maybe it'd be fine in caves or buildings where a few characters barely move, but any big action scene wouldn't work. It'd be great for streaming though.

[@AndresArosemena]

​@@Appletank8 did you not watch Mary Poppins? With the rig they created here they just need bigger sources of lights to light a bigger background and more space in front to stand the actors and light them. In essence, a bigger studio. They can rent a studio and do all sort of shots to keep testing this technique

[@KweenOrion]

I became absolutely OBSESSED with the idea of this ever since that episode of VFXAR, the history behind it, the science, the movie making process, EVERYTHING about it was fascinating to me! I'm excited to see how this could maybe even change the entire industry! Also JC's dress is adorable~ 💚

[@samfiles8909]

Same here bud. I was HYPED when I saw the results. Its 2 am and I'm tryn so hard to hold my excitement!

[@bread-lover69420]

​@@samfiles8909 another Aussie bloke?

[@morfy2581]

If this can become an affordable method, it might just be a budget option for smaller productions but big industry films are probably better off with LED video backgrounds.

[@nhiko999]

Likewise. As someone else mentioned in the comment: even a 10k investment for actual perfect compositing is nothing for a big studio, it's insane the tech wasn't recreated...

[@skyscreamstudios]

@@nhiko999 I've handled lenses worth more than that. 10k is literally a drop in the bucket for a big studio.

[@fellfromspace]

This is an amazing video unpacking a technology that I had never heard of. You explain it beautifully and place it in a wonderful historical context. And your recreation and demos of the old Disney tech are off the chart cool! Thanks for making this video.

[@tapiolankiira1968]

One of the most tantalizing, joyfull, and learn full videos I have ever seen

[@ICantStopMakingNoise]

"If you ever think your rigs are janky - they're ALL janky" is such a perfect statement.

[@SentinalSlice]

Dolbe or dobe lord of jank.

[@rufusmorris9160]

Everyone should be aware that this isn’t just any regular recreation, it’s a restoration of a long lost technological marvel, this is history in the making, everyone should spread this vid worldwide for everyone to know. Congratulations on restoring and refining one of Disney’s greatest cinematic techniques. 🎉🎉🎉

[@LightSourceTemple]

they just changed the vfx game

[@LuisSierra42]

@@LightSourceTemple *restored

[@ThePCeristas]

The Omnissiah is pleased

[@eugenetswong]

I would rather keep it a secret, but yeah, this is cool.

[@generalgrievous2202]

​@@eugenetswongwhy?

[@ohkaygoplay]

Whoa. I had no idea that's how they did it. It seems so much easier, too, cutting out the minute detailing in post. This is incredible.

[@MarkJohnson-ev2jw]

THIS VIDEO WAS AMAZING! I loved everything about this, the deep dives and break downs as well as the final product. It looked like a lot of fun as well.

[@jabezcrisp7899]

I can't believe how rare it is to see something genuinely cool on the Internet

[@protips6924]

Yes, I feel like a boomer, im 20-21 and when I go through the internet I feel like im going through a mind field of junk. I can barely even open up my computer anymore, unless I am studying for UNI. Its a breath of fresh air to open the internet and actually watch someone that adds to my IQ. Magic mushrooms are the only thing keeping me sane.

[@Dagoth666Ur]

So true, these days mostly just clickbaits or stupidity.

[@UltraSuperDuperFreak]

LOL , then you need to freaking wider your search horizon mate . Plenty of actualy cool, insane, and wild things to watch here.

[@henrivlot]

@@protips6924 There's definitely gems out there still, but I see what you mean.

[@tappajaav]

@@protips6924 Sounds like you're on good tracks. Internet is wonderful but it's best used in moderation

[@thegamedevcave]

this legit blew my mind. Both on how well the greenscreen footage came out (seriously, that by itself was impressive) but then seeing how clean the sodium shot was, holy damn

[@virkots]

that was my reaction too, haha

[@tidel32]

@@virkots Until you realize the dress is transparent....

[@mnomadvfx]

The green screen footage only looks clean until you notice how b0rked the color of the dress is and the fact that when she turns the wrong way it causes her torso to disappear. It's a good effort, but one that took a fair bit of clean up to get vs this sodium yellow screen technique which basically just works well out of the box. The only thing missing now is to make the entire system more compact and to replace the dated sodium vapor bulbs with yellow 589nm emitting quantum dot leds.

[@falleithani5411]

@@mnomadvfx What's wrong with the bulbs?

[@JinxedPixie88]

@@falleithani5411 Expense and storage - LEDS are much more compact and easier to store and move around. sodium vapor bulbs are, comparatively, quite fragile.

[@mnorth1351]

As a total VFX layman, I can barely see the difference between the green screen and sodium vapor shots. But I love how excited all the VFX artists are!

[@tappajaav]

Look at the difference between green parts

[@rookiexreviews]

i think thats why they didnt show much side by side but already made vid and btw genuinely interesting but imo it just that green screen just came long way lot!!! time and $$ poured into it

[@Th1sUsernameIsNotTaken]

There's clearly a difference, wdym? And the point with the Sodium vapor shots is that they didn't have to edit 400 different settings to make it work.

[@PaulDeanBumgarner]

Excellent content. Truly fascinating and informative. I love when forgotten processes and techniques are reproduced and reimagined with currently available technologies.

[@4RILDIGITAL]

The science and innovation behind filmmaking is so fascinating. The sodium vapor process is evidently remarkable. It's surprising we don't hear much about it despite its clarity and quality.

[@IllusionSector]

I'm stocking up on sodium bulb manufacturer shares because there is no going back to chroma.

[@JB-wy8fc]

🤣

[@flyingelephantwalrus]

Ray Harryhausen used it for all his Sinbad movies

[@DisorderedArray]

Astronomers used to rely on the fact that sodium vapour lamps were used in most street lighting, and they could just notch it out of their images. It's surprising it wasn't used more widely for vfx.

[@TheCatBilbo]

I LOVE the meeting of art, science & artisan skills: making those prisms must have been like a science-informed dark art!

[@quilleymemory]

The moment he said "they were using a bean splitter prism" at 1:50 I was like "THEY'RE FILMING A MATTE RUN AT THE SAME TIME!!!" My god this really is absolutely ingenious.

[@MGmirkin]

Splitting a lot of beans were they? Maybe a few Black-Eyed- Peas?

[@Klaaism]

Back when Disney actually Fing innovated... They innovated!

[@scoobertmcruppert2915]

@@KlaaismDisney didn’t even develop it, so there’s that and what do you mean they are the ones pushing volumetrics forward…Don’t get me wrong Disney is and has been a horrible company but they’ll keep innovating or pushing others innovations to make that sweet profit. Generally innovation in any industry is just finding new ways to reduce labor and costs of labor unfortunately.

[@kazioo2]

@@scoobertmcruppert2915 Unfortunately? This is literally the same mechanism why 95% of society doesn't work in agriculture anymore and has more interesting and less health impactful things to do.

[@davidhalpern605]

I came into this video thinking this would be your typical youtube hyperbole , but you really actually undersold it, wow, what a great piece of history and than recreating something that was lost. amazing.

[@foolswithtools6714]

Really brilliant work! It's wild to hear this story and see just how effective the old techniques can a dash of ingenuity can be.

[@TheHvkCorp]

So what I get from this is that there's an old timer at Disney, golluming in a cave looking at a cube ?

[@jfolmar2004]

That’s probably what Walt’s up to these days.

[@computernoise2209]

@@jfolmar2004 Walt hid them in secret. He died normally, but he was forced into cryo until we have the tech to retrieve this memory from him.

[@AmaroqStarwind]

Horde your lostech before Comstar finds it

[@billfred9411]

@@computernoise2209 He died from lung cancer and was cremated two days after death. I assume you are joking but sadly i can't be sure because people are so gullible nowadays, they will believe anything.

[@jedironin380]

mmmyyyy pprreecciioouuussss!! 😆

[@brandontylerburt]

Watching a visual-effects artist drink from a perfectly matted bottle of water literally brought tears to my eyes. No more need gauzy materials and long hair be the bane of compositors! Such great work. Thank you all.

[@jensenraylight8011]

RIP for the VFX Artists who Spent 10.000 hours manually Rotoscoping frame by frame, it's as if their effort was unnecessary, just because Disney decided to hide the tech from the world.

[@michaelkupfer3723]

Green screen is obsolete... and so is this (way to hardware depended, way to complicated, try to light a marvel set with sodium lights). The future is The Volume

[@jensenraylight8011]

@@michaelkupfer3723 yes, The Volume is the future if your dad was Bill Gates or Bezos. Studios can barely pay their expenses, let alone invest in super expensive tech It's also very limited, because of the space restriction, Not to mention it's hard to use a flashy practical VFX like explosion or car crash with the volume While Green screen and sodium, you can do a large scale VFX and practical VFX, You can put it everywhere including outdoor, like vfx that require you to jump from building to building It's more versatile, you're not limited to just doing a static dialogue with minimal action cause you don't want to break the illusion from the Volume

[@keiyakins]

​@@michaelkupfer3723 If the volume is all software how do I set it up in my basement

[@michaelkupfer3723]

@@jensenraylight8011 Yes, that's why you rent it. Just like productions rent cameras, lights, rigs, dollys, guns etc etc

[@NameUnimportant]

I'm glad I'm not the only person in the world to realize how utterly advanced Mary Poppins was and wondered, ever since I was little, how they did SUCH a good job on that movie but were never able to replicate it. I was so obsessed with this movie when I was little that I used to draw little chalk pictures on the ground and pretend to jump into them and try (as well as any 6 year old child could) to make my room look like whatever it was that I drew in the picture so my room was then the chalk drawing come to life lol. Still one of my favorite movies to this day. Thank you for bringing me some good memories. And am I wrong is thinking that with all the money, effort and time that would be spent on post, doing it using this method would be more cost effective?

[@MorgenGhost]

In fact, Disney created a real-time Overlay Mask that can be adjusted based on the direction of the light. This is truly an incredible tool with which you can achieve incredible results using all modern technologies coupled with this device. I'm shocked by this educational video! Thanks to the authors of the video for such an open breath of strength and inspiration!

[@leestuart2653]

Pouring salt in that shot has got to be the biggest Flex Disney has ever given

[@Camy256]

This is actually so sick! I hope this is picked up industry wide because it looks so much cleaner than greenscreen, makes it more immersive!

[@sion8]

I'm just trying to stick didn't try other methods to recreate in the meantime. It just seems green/blue screen somehow became too powerful. Yet, they always knew there was a better easier method.

[@GabrielSantosStandardCombo]

What's more likely to happen is what they mentioned at the end of the video. This technology can be used to produce top-quality examples of complex masking situations, which you then use to train an AI. The future is AI masking.

[@gonlaserna]

This is why I follow you guys and have been for many years, legit, amazing and valuable info/content. Corridor rules! 🙌🏼📽️✨

[@quicksmilenathan103]

This is probably the coolest thing I’ve seen this year! I hope that big studios will learn this skill again

[@ritinkornas5336]

As an astrophysicist, I found this super cool and interesting as we also use the sodium doublet at 589 nm for the characterisation of our Sun and other stars! And very similar optics, etc. to use :)

[@usbobthefunny]

When I was in college, got to see a presentation by Paul Debevec where he was showcasing his research on being able to put actors into any scene and match the scene lighting exactly. Absolute leading professional in film and lighting.

[@Caveyacht]

his light stage research is truly amazing

[@jlfrandsen]

This was amazingly informative! Shows the direction AI will need to go, and potentially this can and should be used more. Being able to replicate that tech without actually using the original prisms is so handy. I am awed

[@elchunkacabra1450]

good premise. interesting topic. short video that quickly goes over and explains everything. 10/10 video

[@RichardHartness]

As an engineer who just appreciates the amazing things that were invented in the age of analog, I have to say that finally seeing this technique come back to life nearly makes me cry. I've honestly waited and hoped to see this tech come back to life for years. Hats off to you guys an thanks for working on this remarkable project.

[@AndyDo]

I am absolutely gobsmacked. Like, this made me emotional in a way I can't describe. I've spent nights sweating, cursing, hating everything. Roto until my eyes are bleeding. And I've never come close to anything this good. This was an Arthur C. Clarke moment. It was indistinguishable from magic. Thank you so much for sharing. Now I just need to convince Ian to do the next episode of Dynamo Dream like this...

[@GrandHighGamer]

I have to imagine there's a little more tweaking than they're letting on, you can definitely see light spill in their BTS footage. 7:22 shows their sodium footage and his face is clearly illuminated by it as well as part of his arm. So either he's slightly see through in the footage, or they'd need to do a bit more tweaking to make sure he stays solid. Would probably still be far less work than regular chroma key though.

[@Shadow__133]

Dude, find a shrink!

[@bronsoncarder2491]

@@GrandHighGamer This was also the first time it's been done in decades. There aren't books full of tricks about getting this right. This is technically the first time anything has ever been filmed using this process (since it differs from the original in several important ways, most importantly the prism being swapped for a filter, and the two cameras). The fact that they got this good of a result first try, even if you can nitpick a few moments (that I honestly didn't notice), is pretty amazing.

[@straak]

And the technology was 50 years old.

[@monkeysfromvenus]

@@GrandHighGamer when they converted the orange shot into a transparency mask, they probably just adjusted the gain/curves so the reflected light on oblique angles got crushed to black. I wish they would have shot some more specular/shiny objects, though even that shiny water bottle looked pretty great

[@fearlesslionmedia4232]

This was very impressive to see. I remember seeing the original react video and was blown away then. So to see such a magical technique brought back to life is incredible!

[@AndyGilleand]

The opening question is silly. While yes, there are some specific techniques that were better in the past, but by in large, VFX are massively better today.

[@Todd_Manus]

This is a great moment in my professional life. Paul Debevec, was one of my influences from over 30 years ago. He is one of the people that came up with the idea of using HDRIs to light a scene. We owe the domelight to him. I remember emailing him about HDRI, and his film Fiat Lux... so awesome guys.

[@baptistedelplanque8859]

My brain froze for a second when I recognized him! Apart from that the optical setup doesn't feel special if you're versed into hyperspectral imaging 😅

[@vailias]

I was like "Wait, THAT Paul Debevec? No wonder he's doing more optical wizardry"

[@TheMostInspiredFool]

This is a revolution in the industry and the fact that this is portrayed as “deep dives into classic visual effect technology” being an average week at Corridor messing around with old technology is hilarious lol. This is an absolute game changer, we need to reignite it and who knows what further research with it will allow us to do! Amazing work 🙌

[@tovarishcheleonora8542]

Now the only other thing we need is to bring back the CGI quality that existed in the original Jurassic Park trilogy. Instead of the crap that most studios uses nowadays.

[@txorimorea3869]

This is the first step. We now have cheap LED technology that is really good at producing monochromatic light that can be filtered out/in by that technique.

[@sion8]

​@@txorimorea3869 True.

[@Linkatchu]

@@tovarishcheleonora8542 Well, theres alot of good CGI nowadays, the good one you don't notice. Tough the Original Jurassic Park did use mostly practical VFX, didn't they?

[@McHobotheBobo]

I think this could be extremely difficult for larger scale shots

[@rebelcommander7starwarsjur922]

It’s nice that you were able to do this again it’s amazing and it’s gunna help out a lot but eventually it’ll just be replaced with LED sound stages or just filming on location

[@PerikleZ87]

On Mars?????

[@rebelcommander7starwarsjur922]

@@PerikleZ87 or dude ok on location OR LED SOUND STAGE mars would just be an LED sound stage

[@thomasdrew1159]

One of the best videos to come out of this channel. Thank you!

[@jmeyer5able]

Niko: “They were never able to replicate the prism.” Paul Debevec: “Hold my beer”

[@joyfulnoize6958]

"Hold on" -Roger Waters

[@SmallSpoonBrigade]

It's unclear why we need that with modern technology. It was required with film cameras because there was no easy way of throwing out just one narrow bit of light spectrum. However, with digital technology, it's rather easy to split just the sodium vapor light color to a separate layer with just one camera and interpolate between the two adjacent sides to create a mask. I do think this is a really cool exercise, but there's a reason why the technology isn't going to see a reassurance, although it probably could have stuck around longer.

[@NotoriousNickNorris]

@smallspoonbrigade ⁠you're not selling it. If it is so easy, why aren't they doing it? It would save a fortune in post-production costs and produce a superior product.

[@error.418]

@@NotoriousNickNorris Right now this reproduction cuts light levels in half, not to knock it, just a trade-off that would be fine for some scenes and not fine for others, but all movies need multiple tools, so still valuable

[@panathentic]

YOU DID IT! And using off the shelf components means that for the right price, anybody can do it.That means you don't need to manufacture prisms for new digital cameras to simply do a key shot, ANY production with a budget can probably utilize this incredible setup! This is very exciting, I am so glad that you got to try it out first.

[@thebigitchy]

I’m sure there was a lot that needed to be fabricated. If the two digital cameras aren’t perfectly in sync, the footage would never line up. And especially with cameras with rolling shutter, they would need to be scanning perfectly simultaneously. So probably not just “anybody” can do this. That being said, I think that they proved that the technique is feasible with modern technology and digital cameras. It sounds like they originally did this with existing synchronized film camera technology. I think one of the key advantages of modern chroma key is that everything is done with a single camera. So despite its limitations, except for the software, no specialized equipment is necessary.

[@Leeki85]

@@thebigitchy This is fairly simple to do on the hardware level. Film makers often create their own technology and there are small companies that do such projects. Within a year there will be a ready to use product. It's easier than you think. With 3D printers, microcontrollers and whole DIY market it is fairly simple to prototype and develop such tech. However like Paul said in the video. This will be mostly useful to train AI. Within few years there will AI solution that will be capable of perfectly removing background from any object.

[@Hamachingo]

@@thebigitchysyncing digital cameras is easy, the professional ones all have a connector for just that.

[@emmswarega2658]

I'm a Lay man when it comes to film and editing but I love the way the Corridor crew keeps me hooked on their seemingly alien content

[@chiaramatteu7163]

OMG this is amazing! I am a great fan of Mary Poppins and I really appreciate to know something new about my favourite film Thanks a lot! Greatings from Italy ❤

[@owenssubchannel]

I don't think people are appreciating just how mind blowing this is - Corridor Crew/Digital just recreated (with help) what Disney have not been able to do for years. A youtube channel that made goofy funny video game sketches with cool Special Effects has just casually reintroduced one of THE best cinematography techniques ever used and but a billion dollar company to shame! Wow, round of applause!!

[@MatRDR]

I mean it was actually Paul Devebeck, he gave it to them to test it, but the credit should go to him for making it and corridor for testing it

[@brutuslugo3969]

Tbf , I don't think Disney "have not been able to" do this . I think they just haven't wanted to . The technology has its drawbacks I'm sure thats why they stopped using it .

[@alamcho]

@@brutuslugo3969 Exactly. Also, it's not like they "need" to recreate it anymore, since it's all digital now

[@Coconut-219]

He said it was all made from 'off the shelf components' - so apparently he didn't "invent" anything and both of these filters already existed this entire time. I know that sodium lamps are used commonly still and so the blocking filter is commonplace, but I didn't think that the passthrough filter would have been something that wasn't unique to that filming process so it would be hard to recreate, apparently not.

[@matthiasklein9608]

Long time ago I read a book on special effects cinematography by Raymond Fielding. It had a short chapter on Sodium Matte and I always asked myself “Why isn’t everyone using this.” (I also kept talking about that process to everyone who wasn’t interested) Now I know. And I’m very grateful that you made this video.

[@jsl151850b]

As used in the The Invisible Man.

[@ChipmunkMaker90]

Bro the work end effort this took is encredible. Great Video and very interesting experiment

[@dalegray934]

Did not expect to enjoy this, but watched every second with great interest!

[@nyengster]

THis... THIS!!!! is the perfect example of, WHY we need to study history, and old technology, just because something new, dosnt make it better! this was SOOOO amazing to watch!

[@michaelkupfer3723]

It was a nice history lesson. But green screen is way easier, less hardware dependent (try to light a Marvel set with sodium lights) and too complicated. And it still doesn't light the actors correctly. The future is called the Volume

[@bladddeesa]

@@michaelkupfer3723 He addresses that

[@Gunth0r]

@@michaelkupfer3723 yeah the lighting was off and is probably painful to get right on set, but these are techniques that can be rediscovered and refined. Ideally, you would use multiple channels, not just sodium.

[@keiyakins]

​@@michaelkupfer3723 True, green screen is easier and *usually* good enough. It's a great tool. But sometimes it's *not* good enough and for those times something like this is useful.

[@CaptainDisillusion]

Oh my, this is giving me the sodium vapors.

[@MKVideoful]

Hi CD!

[@TheTrueGlaukos]

does this give you an idea for a video?

[@cat1554]

I bet you'll start using it.

[@Digetter]

Ahoy! Captain!

[@onradioactivewaves]

Ahhh hell Na

[@LordofDD24]

This is sooo cool! Y’all finally found the secret power of the prism! Yay for science and filmmaking coming together like this! 🎉

[@clarkecorvo2692]

the whole thing blew my mind.. manufacturing maybe not the easiest thing, but after its set up, its such a cheap, effective and brilliant way to compose.. people in the 60s were different man.

[@aphaits]

Paul Debevec is the OG father of HDRI, I remember back in 99 trying to learn and figure out image based lighting for the first time. Thank you Mr. Debevec for your contribution to modern VFX!

[@rolandwfleming]

His light probe image gallery helped launch my academic career...

[@justafoon]

This reminds me of them putting sails back on ships. Like, we had it right the first time, and it ended up being better. I love this new age of finding the best thing to use, despite it’s age.

[@thepapschmearmd]

lol what? Sailing ships are not better. They are different, but they are absolutely inferior for many things.

[@lastwymsi]

​@@thepapschmearmdThats not what theyre talking about. Suggest googling this cause its a cool topic, but in TL;DR Modern tankers and cargo ships have been utilizing giant modern sails to effectively eliminate fuel consumption while travelling with the wind, thus saving a TON of money and resources.

[@RyTrapp0]

@@lastwymsi OP said "we had it right the first time" as if we're going back to something - yet these sails aren't in any way, shape, or form traditional sails, they're airfoils, and they aren't used in any traditional way. They have more in common with a modern race boat than they do with anything that ever strung up cloth. Really wish we could stop making these false equivalencies just because we're putting the words "ship" and "sail" in the same sentence again. This stuff doesn't have anything to do with the age of sail. Also, sail boats never stopped existing, so I don't know what this "rediscovery" idea is that people have(OK, I do, it's so we can make dumb memes about "lol the boat engineers just discovered the wind again lolol" by misrepresenting what this is entirely).

[@Crazyclay78YT]

@@RyTrapp0 no, people were literally talking about putting cloth sails on cargo ships again to reduce emissions. and no one is saying that sailboats dont exist anymore, its more like "huge transport ships are going back toward the path of sails again"

[@RyTrapp0]

@@Crazyclay78YT Feel free to post the name of the concept or organization behind it

[@dlklaver]

This is so wicked! It’s insane that this tech was lost for so many years and only now been recreated. 🎉

[@JustinProper]

My friend recommended this video. He lost me at "sodium nitrate". But he convinced me to check this out & it was very educational. I wish studios would look at channels like yours & maybe learn something for once.

[@IMightBeBlu]

I don't think I've ever sat down, looked at an image, and audibly gasped in a long time. This is incredible stuff to get to see!