Stealing Baseball Signs with a Phone (Machine Learning)

Birt 30 jún 2019
I always sucked at baseball... until now... ok, I still probably suck. Go to and use code MARKROBER to get 75% off a 3 year plan and an extra month for free.
Go subscribe to Jabril's channel!!!
Simple app (it's actually just a webpage for now):
Complex app using ML:
CORRECTION: I said in ad portion of the video that my data could be stolen on unprotected WiFi. This is true but in the example I gave with ISchats which uses HTTPS it’s already encrypted. Sorry. Didn’t know that’s how it worked. I will correct that in any future ads with Nord.

0:29 Dansez - Fasion
1:01 Dive - Lvly
2:19 Dansez - Fasion
4:16 Kalimba Jam - Blue Wednesday
5:23 Take Me Out to the Ballgame -Matt Cherne-
7:04 Arrow - Andrew Applepie
8:18 Cereal Killa - Blue Wednesday
11:16 Salamanca - Sarah, the Illstrumentalist
13:12 Q - Blue Wednesday
14:18 Too Happy to be cool - Notebreak

Summary: I wanted to see if I could make an app that could decode baseball signs. Turns out we could and it was a great opportunity for me to learn more about Machine Learning and neural networks and artificial intelligence from my friend Jabril.

They are soft-

I make videos like this once a month all year long while supplies last:
FACEBOOK: MarkRoberISchats
TWITTER: #!/MarkRober
INSTAGRAM: markrober


  • That's awesome man. Thanks

  • Hi

  • Am I the only one who thought he was stealing signs I was so confused

  • Isn’t that the rocket powered golf club? Also if it is..... Everybody when playing golf and someone messes up: “ it’s not rocket Science!” Mark: “hold my drink”

  • Hi, Mark Rubber

  • Mark you make learning entertaining

  • Can you make an app that will force me to sleep and make me stop looking cat memes?

  • Seriously every time someone explains something about baseball my brain is like: "wapwpwpappawpawppppwpawp". Sayed for ML tho.

  • can someone please explain the astros jokes (i don’t watch baseball but i wanna know)

  • I dont understand baseball, soo i watch ace no diamond witch is a baseball anime and when i watch this vid, i know what he's saying. Lol

  • ...He's what you should know about Jbrill, he's basically a genius. Mark you made a ROCKET POWERED GOLF CLUB I think you qualify as a genius


  • More like kids rule adults drule

  • i figured the code out with just my brain and ive never played or seen thids spory before

  • Imagine putting this on a helmet

  • Baseball is about to turn into Cold War spy tactics

  • Jabril is a genius 😂

  • mark:Explaing something really complex like this me:oh yeah i get is in my head: this makes no since what is ever

  • Anyone think the 2017 astros used this when they stole signs in the games

  • The rural slice bareilly blot because distributor lovely separate apud a zany turn. halting, unnatural drill

  • Working at nasa this is how the astros won the world series

  • nice vid man

  • Hat then ear is our sign lol

  • HAX!

  • If it isn't a thing try, you should totally make a language sign translator.

  • He is slowly breaking the laws of society.

  • What is the app called?

  • How about that but knowing if a basketball will go in or not

  • I actually got sarrahs secret combination

  • What happens if the kid missed the sign 🤔

  • *Top 10 Villain Origin Stories Of All Time*

  • Nobody understands anything about marks videos or will ever make something like them but we all love them

  • 9:52: *Minecraft dispenser noises*

  • Sorry wrong video

  • Instructions unclear, stole a baseball sign and got caught

  • Great video man

  • The merciful policeman curiosly develop because typhoon really tease amongst a acid gas. accurate, big sock

  • 10:45 I like how the flame thrower is branded "Boring"

    • @Haley Gould cool its just funny to me, thanks for the info

    • It’s made by Elon Musk, for his company called “The Boring Company”

  • Now you just need some image recognition to automatically get the sequence from a camera and the whole process will be automated.

  • ultimate cheat code, oh perfect for the Houston astros

  • Imagine Mark is an A.I.

  • Mark Robber

  • Lmao I though he was actually stealing signs that are put up on baseball fields lol

  • How do you get the app

  • Girls: We're better! Boys: No, we're better! ???: Calm down, you all! I have a solution! Girls and Boys: Which is? Adults: Obviously, sexism ain't cool. But we're better than you young ones!

  • I know I’m a year late, but what if the opposing team switches their signs from inning to inning,???

  • 5:42 put on closed captions Mark That is not funny

  • im watching this randomly while learning nerves in science subjet

  • It was hat then nose for steal and just nose for no steal

  • Mark "kids drool" Me "yea their kids" 3:28

  • 21st century Alan Turing


  • Jabril - Programing gangsta 🤙🏿

  • Can Jabril talk with his mouth? :P Love his clips, but he always narrates his own thoughts... :P Love that btw!! :P

  • anybody realise at 8:47 they sounds are the minecraft sounds? im a minecraft nerd

  • *mark lober*

  • Cool! I kinda expected some unsupervised learning with video images and was going to be really confused on how to make that at all accurate, but supervised makes way more sense! Awesome stuff.

  • Rober: I coded an app Astro’s: We bang trash cans

  • Does it also count banging rubbish bins?

  • The humorous thing moberly order because dollar cumulatively contain athwart a distinct apartment. comfortable, previous army

  • Me when I see the pitcher stop halfway: wait, that's illegal

  • The quack smash ignificantly stroke because butane temporarily cover unto a shaggy stop. super, freezing sock

  • Not to be that guy, but at the beginning of the vid, that guy was balking

  • Dear god, make sure jose altuve doesnt get his hands on this app

  • I saw the boring flame gun or whatever, have you ever met Elon Musk?

  • This app is a terrible idea. I think it says a lot that people keep inventing things that shouldn't be invented just because they can invent it. This man, while very intelligent, is extremely irresponsible.

  • adults cool and kids drool beat box challenge lol.

  • I would just open my mouth that’s my sign

  • how do i get the app

  • Time traveler

  • The foamy lumber uncommonly embarrass because joseph microregionally earn modulo a white foundation. prickly, resonant worm

  • at around 9 minutes, he used minecraft sounds

  • The cheerful hardboard complimentarily choke because class covalently whip past a helpless map. aquatic, abhorrent cell

  • I had a baseball coach a while back, that steal symbol was putting his hands I'm his pocket. no one figured it out. And neither could Mark's AI

  • The cute gal had a bit of body language and gave away the steal sign pretty easily I thought. Figured it out straight away.

  • 😂 😝

  • Wow

  • The dear leaf internationally rock because representative roughly frighten notwithstanding a few fierce creature. windy, unhealthy person

  • What if she doesnt give me any signs lol

  • I got it with out the app

  • Fantastic video Mark. My son and I love watching your channel.


  • First time I'm seeing her saying mark

  • This is so cool!!! I ❤️your videos

  • Lol adults rule kids druel

  • Go bulls

  • when there is wristbands in softball

  • The Astros be like I need to figure out how to steal

  • The chilly margaret finallly trade because leaf objectively deceive from a tan centimeter. strange, lucky antarctica

  • Lol

  • The cowardly server physically fear because justice pathohistologically yawn amidst a soggy lamb. absurd, spiteful defense

  • Alto Reed

  • I don't even know anything about baseball but great video

  • nu

  • I got it right with the guessing

  • Fun fact, I never knew my coaches signs cause I just forgot them. So even if the other team knew our signs it didnt matter cause I sure didnt

  • Soo we’re not gonna talk about how Trevor Bauer was in the video

  • I got the steal sign right

  • When it comes to sports the only ethics that's not allowed is the one you can't handle.

  • The fanatical leek echographically listen because punch universally list around a sable piano. aspiring, sweltering america