Bad Apple but it's a Fluid Simulation

I tried rendering Bad Apple inside of a particle-based fluid simulation.
(I recommend watching in 4K if you can, as video compression is not overly friendly towards all the little dots!)
Full resolution video download:
drive.google.c...
If you'd like to learn more about the fluid simulation, take a look at this video:
• Coding Adventure: Simu...
And if you'd like to support my work (and get early access to the project files), you can do so via Patreon:
/ sebastianlague
Or support on Ko-Fi ko-fi.com/seba...
Credits:
Music by Alstroemeria Records (feat nomico): • [Alstroemeria Records]...
Animation by あにら (Anira). Specifically, I used this version: • 【東方】Bad Apple!! ＰＶ【影絵】

[@SebastianLague]

Hey everyone! I was inspired by 'BadAppleBot' (from the recent chess programming contest) to try and run Bad Apple inside of my fluid simulation project. To do this, I've taken the frames from the Bad Apple video and used the Jump-Flooding algorithm to calculate vectors for every frame that go from each pixel to the nearest pixel of the opposite colour. These vectors are then used to accelerate the particles (along with the pressure forces from the fluid sim of course). I recommend watching this in the highest quality you can, because compression will surely turn it to sludge. (You can also find a link to download the full-quality video in the description). If you'd like to play around with the project, it's currently in early access to Patreon supporters, but will be freely accessible in ~2 weeks.

[@YHK_YT]

Thank you for this masterpiece

[@Spyaboo]

BadAppleBot is the true winner of the contest

[@lpeabody]

Ah shit. This is going to be stuck in my head again for weeks. Bring it on.

[@zeruzio1345]

Sometimes to win the game you have to break the board.

[@RobbieEl]

You've made an instant classic.

[@tsup2]

2:48 - The single most hydrophobic drop of liquid I have ever seen.

[@flowdotboy]

zooooooommmm

[@asuuki2048]

3:18 The wettest drop of liquid I have ever seen.

[@TotalyNotSatan]

0:56 I CANT STOP REWATCHING THAT PART

[@6antonioinoki]

if it can run code, it runs “Doom”. if it can play sounds, it plays “through the fire and flames”. if it can render, it renders “Bad Apple”. it’s the rule, no exceptions.

[@DimkaTsv]

Will correct you: "If it can produce freely moving and at least dual colored image, you can make "Bad Apple on it"

[@circuitgamer7759]

Uh oh, I don't know "through the fire and flames" yet... Guess I have some research to do :) Edit: I have now listened to the original. What are some of your favorite examples of remakes of it on things it probably shouldn't have been remade on? Edit 2: I realized I've seen at least one example of it. The edited Lego guitar video from Brick Experiment Channel

[@stray1239]

yes.

[@steampunk-llama]

I’d argue that if it can play sounds, it can play Megalovania

[@stray1239]

@@steampunk-llama well no megalovania would be if it is music it can be turned into megalovania

[@pandepipas7854]

3:16 Underrated moment, water flows down by the scythe, gets to the tip and then amass in the drop, really cool

[@EnderMega]

2:05 *BRO, THIS LOOKS SOO COOL!!!*

[@max_208]

The moment at 1:42 where the fluid from the ball flows into the outilne of the character is incredibly cool looking

[@fitmotheyap]

Stealing the ball's power

[@HyperVanilo]

That's Moon actually

[@max_208]

@@HyperVanilo well the moon's a ball isn't it ?

[@KarmaDama]

The sim adds so much fluidity (pun intended) to the original animation, it makes me think that it might be possible to have a fluid sim to assist in animating 3D characters by adding mesh deformation as a secondary animation.

[@Validole]

... Jiggle physics, soft body physics. Games have been doing something similar for a long while, mostly to make exaggerated boob and butt jiggle to titillate 13-year-olds.

[@chilfang2422]

The bit at 1:50 looks so cool

[@johnnygoode2755]

By far and away the best looking recreation of the bad Apple video

[@Vikotnick]

Mate. Playing a weighted video through a fluid particle simulator is genious. Well done.

[@banana_]

that was better than i expected, so satisfying.

[@LaynaStambaugh]

I think this is the start of a new KZbin trend, that was SO AWESOME

[@CosmicDoggoo]

This is by far my favorite version of bad apple. Actually 2nd, because nothing will ever beat the crackheads that did it on r/place. But even considering that, it's still the coolest looking one.

[@avgchoobafan]

The amount of wallpaper potential is insane

[@dkpsyhog]

Hands down the coolest-looking bad apple i've seen

[@AkiRa22084]

Woah, Mokou's flames turned out so cool!

[@shubhamranabhat]

damn, this has be one of the best version of bad apple out here.

[@MrMKFreak]

A real piece of art. Thanks Sebastian.

[@tuverytary]

Is so fun, i love this version of bad apple

[@Tomatech]

This is one of the most seamless integrations of the video I've seen in any of these

[@Daemonworks]

After all these years, folks still coming up with new ways to reinvent bad apple. You gotta love it. :)

[@melanieeverglen]

Half of my homepage consists of bad apple videos. This one is definitely one of my favourites, if not the best I’ve seen. Thank you a lot

[@uncertawn]

looks absolutely insane

[@the_netherqueen]

Wait oh my God I saw this in isolation and I didn't even know you made this sebastian. I love it

[@AmeKikai]

This is by far the coolest one of these I've seen

[@droidBasher]

This is what happens when Maxwell's demon gets into touhou.

[@chabanop]

A bad apple video on this channel is unexpected but very welcome

[@Ramash440]

My boy Sebastian Lague making his own Bad Apple? That's a good start for the year.

[@shrippie-4214]

This is the best thing I ever did see

[@foolofdaggers7555]

Oh my god. This actually gave me goosebumps, the visuals are so stunning.

[@henryhere]

I love how when it snaps into the white background parts the liquid just explodes

[@lforlight]

1:42 The bit here is awesome, with how this low-density figure is reaching towards the dense orb, causing a stream to flow in.

[@HyperVanilo]

That dense orb is the Moon because the characters who tried to reach it are Lunarian

[@toastyyy2458]

This is the first time that I've actually watched an entire "Bad Apple but it's ____" video, well done!

[@domodominatesdummiesanddoo1856]

Ocean currents update lookin wild

[@masterhand03]

This is literally the best-looking version of this music video I've ever seen.

[@feb778]

That's so beautiful btw, you're genius

[@sinisterisrandom8537]

Man Bad Apple at this point is done on everything just to test the limitations of something and your own skills

[@suncrafterspielt9479]

Let him cook 👨‍🍳

[@not_estains]

i really like this, when the particles are trapped and have no way to go it creates a glow effect around the characters

[@wasinirafuse8769]

Holy shit this is unironically so satisfying

[@teacupper]

The intro was so sick dude😭😭🔥

[@MaxIzrin]

A piece of the image is missing here and there, most noticeable towards the end at 3:28, because so few of the particles made it to the other side.

[@dorbert3838]

That animation is so... fluid

[@SwanX1]

I didn't realize this was a Sebastian Lague video until the very end

[@AquaBotol161]

I like the way the fluid particles move. Its creates a beautiful effect

[@ZealanTanner]

Well done. Added to my ba dapple playlist

[@jpalz]

this is quite possibly the most beautiful thing I've ever seen, without exaggeration

[@TotallyAqua]

I just stumbled across this animation. Fantastic work

[@hejpa2775]

I saw this video recomended to me and I didn't know it was you. So I decided to not watch it, then I found that you made it, so I decided to watch it. :)

[@PolyVort]

This is the coolest thing I have seen today

[@av_alt_]

this is beautiful

[@nielsbishere]

Now this is art

[@r9thegoat-z9k]

this is freaking amazing

[@Diabl0pl]

It's so beautiful! :D

[@GinkgoDev]

This is insane! I tried similar thing before, but didn't know how to make vector from video frames. Thanks for sharing video with informations!

[@Frendude]

Its always that way Doom running on everything And bad apple can be played in everything with dual coloration

[@cheesegavioli]

This is actually gorgeous, it elevates the meme so much

[@kristoferkrus]

Damn, this is one of the best remixes of the bad apple video that I have seen! Very impressive animation.

[@AdrianHereToHelp]

This is beautiful. What a wonderful day

[@pyritenightmare]

Beautiful. Makes the movement feel very real, and the parts where the simulation struggled are very interesting.

[@Nimadj]

Been a while since I last full screen'd a Bad Apple

[@algorithmae]

That was SUPER satisfying

[@kaxcommentssomethingREAL]

2:43 genuinely beautiful 3:01 HOOOLY SHIT

[@mollop0]

I need to show this to all my friends.

[@AkariTheImmortal]

that was beautiful

[@MattGallagherComposer]

"Best Bad Apple video?" No; by comparison, this is the ONLY GOOD ONE.

[@makonede]

Bad Apple Juice

[@filipberntsson6634]

Mom!!! Sebastian Lague just posted a new video and it scares me

[@hhhsp951]

The edibles kicked in.

[@eltowers712]

At first I was like "huh, somebody took Sebastian Lague's fluid sim, it's just too similar". Until after the video was over I noticed it was actually his video. It's so good.

[@mews75]

This is so cool!

[@haniyasu8236]

3:18 The irony of a simulated fluid filling the frames of an animated fluid is just too funny to me

[@SkeleGamer9197]

The animation fluid asf

[@NimbusCloud_]

If something has two contrasting states, It can turn into Bad Apple. No exceptions.

[@gaupestudio]

POV: The bois says it childish. The math mathing in my brain.

[@thatguy8495]

Wow The animation is really fluid! Great work!

[@TheKd8lvt]

I mean, it _is_ a fluid simulation, I'd hope it's fluid! (badum tss)

[@dirkroosendaal2254]

I feel like "Bad Apple But It's ___ " is almost on the same level as the Turing Test. And instead of something being Turing complete, its Bad Apple Complete. really cool you managed to make this :)

[@MiuKujo]

KZbin compreasion hated this. But it still looks amazing.

[@JiosX]

This is the coolest. If this technology existed in the 80s, the music videos would've been more awesome.

[@Acreaturesincebirth]

Fitting for Suika to be the character in the thumbnail

[@LucasPlay171]

Wow i actually found a recent bad apple video, cool!

[@lunarcrazyman]

incredible

[@Dexter_459]

bitrate killer, excellent video lol

[@Aragubas]

amazing!

[@Muddz2ndChannel]

Bad apple but it's actually the Mandelbrot set

[@xamanto]

Superb!!!

[@iblitz95]

Captain Minamitsu Murasa sends her regards.

[@sebastiencorne1262]

that's awesome

[@fabo-desu]

0:58 this part was so satisfying

[@AgentSapphire]

its 2024 and I'm still finding new bad apples

[@F0x3r_SimP_-.-]

Comenting on each bad apple video I see #14

[@backslash057]

may your computer rest in peace 🙏🙏

[@ceritrus]

I've seen it all

[@bilaluddin2345]

watching this on 144p makes it look like true water

[@Flipdagoose]

damn, this is actually kinda beautiful lmao

[@r0binkanters]

watched this while high. what a ride.

[@Vekkizunt]

“Oh another bad apple video… cool… wait it’s by Sebastian Lague???”

[@tanzhonghui]

Getting massive window media player visualisation vibes

[@therealbrappuccino]

hell yeah