What is IK and FK?

IK and FK are both rig systems. In this video I demonstrate the difference and when to use each. I go over switching from IK to FK. This applies to all major 3D packages like Maya, Blender, Cinema 4D and others. Getting comfortable with the two systems will help you improve your animation.
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#blender #maya #cinema4d #characterrigging #rigs #animation #animationtutorial #rigging

[@santhoshsivan-xd6ki]

The jump was another level

[@alexonstory]

haha it's fun to see yourself as a puppet

[@suraiya21]

No words can express how am feeling right now. Excellent explanation. Tons of tutorials there but none can explain the gist like you do. Thank you so much.

[@alexonstory]

Happy the video helped you :) Thanks for your note!

[@fhariri]

Ur a life saver dude... I have been apart of a bootcamp and kept hearing those words... I finally understand what they mean now 😭🙏❤

[@alexonstory]

That's awesome! Happy the video helped you get it :)

[@zoesakurablossom5327]

THANK YOU SO MUCH I´VE BEEN FEELING SO LOST IN MY RIGGING CLASS AND THIS 5 MINUTE VIDEO MADE MORE SENSE THAN THE PAST TWO WEEKS, I FINALLY GET IT, THANK YOU!!!

[@octovusbeka]

This is the first time I have received such a clear explanation about IK and FK. Thank you for the explanation👍👍👍

[@marilynberry9478]

orderly, direct, clear. beautifully paced. Couldn't be better. thank you!

[@alexonstory]

Happy to hear that, thank you for the feedback!

[@GameTourist491]

So clear and easy to understand, helps me a lot. Thanks you

[@alexonstory]

Really happy to hear that, thanks for your comment!

[@akshayfreefireshorts9278]

most epic entry in blender

[@alexonstory]

haha thanks!

[@VanticoE]

how do you do

[@Quadmyke]

Ha! Brilliant I did not expect you to literally jump in😂 well done, great entertaining explanation.

[@alexonstory]

haha yeah that was fun to do. Thanks for the note!

[@bjaanderson]

Really excited to see your channel take off. You've been incredibly helpful.

[@alexonstory]

That's a nice note thank you! Happy to share :)

[@lakeraswain]

You give off a Bob Ross demeanour when speaking :). Thanks for the great content!

[@alexonstory]

Thank you :) Bob is the man!

[@js3671]

Perfect video, thank you. Most people neglect to even mention that FK means Forward!

[@alexonstory]

Thanks for your note :)

[@amirnetwork8629]

this is the second video I a m following. Alex. i love how you explain everything

[@alexonstory]

Awesome! Thank you :)

[@chinweokoli5501]

Thank you sooooo much for this explanation!! I'm a 2D frame by frame animator trying to get into rigging for cut out animation with Moho and it's been a nightmare trying to wrap my head around these terms! I finally think I have a MUCH better understanding of these terms with this ONE video! Thank you so much! I plan to learn Blender animation as well and I will be back to see your animation videos when I do!

[@alexonstory]

I'm happy to hear this video helped you!! Good luck with gaining your new skills. I know you can do it! Thanks for the note!

[@andres_mpr]

Man... thank you so much, this was so clear, so helpful... right into the point, clear example, nice usages scenarios... thanks a lot!!!

[@alexonstory]

Happy the video made things clear and gave you value! Thanks for the feedback!

[@TomasHradckyComposer]

You are a wonderful teacher. Many thanks.

[@alexonstory]

That's nice to hear. Thanks for the note!

[@PacificNorthwest503]

Very useful information and well explained. Thank you

[@ranjithcr7591]

Thanks for your great lesson MASTER

[@alexonstory]

My pleasure :) Thanks for the note!

[@eobiri]

Best explanation I have come across. Many thanks! I just subscribed too!

[@alexonstory]

Happy to hear that, thanks!

[@henrimarbacher2085]

Great explanation, great exemple. Thank you very much !

[@alexonstory]

Happy to hear that, thanks for your note!

[@ameenahahmad558]

EXCELLENT explanation , Thank you sooooooooooooooo much .

[@alexonstory]

That's great to hear, thanks for your note!

[@sraztec01]

Definitely cleared up things for me. Thank you

[@alexonstory]

I'm happy it helped you out! Thanks for the note!

[@MuhsinOKCU-uk7sf]

cool simple explanation

[@alexonstory]

Really happy to hear that, thanks for your note!

[@jessefaltus6095]

Excellent breakdown

[@dohrah]

Best explanation ever. Thank you!

[@alexonstory]

Really happy to hear that! Thanks for your comment :)

[@pesindiafc9363]

That Jump was Awesome dude...😂😂

[@alexonstory]

haha thanks :)

[@manjusha3699]

Really explained so well! Awesome!

[@alexonstory]

Thank you, I'm happy to hear that!

[@olliverkatana4168]

Thanks for the clear explanation.

[@alexonstory]

Glad it helped :)

[@뭬-j9b]

You teach better than my professor!! Thank you.

[@alexonstory]

Thanks :)

[@badjinx6958]

Thank you for this video, so easy to follow it.

[@alexonstory]

Happy to hear that! Thanks for your note!

[@Adventurerer]

awesome video, i understand that if the environment is influencing the character, Ik would be more beneficial, if the character is influencing the environment, FK would be more fluid

[@alexonstory]

Thanks! I think that's a good way to look at it. Know that you can change that up depending on the action and your preference.

[@maxportfolio1468]

This lesson is great. Thanks Alex

[@alexonstory]

Thanks for the note Max! Happy it's useful.

[@yasirhussain1692]

I watched 30+ tutorials about ik & fk but i can’t understand Or i feel it’s to hard to understand but today i watched your tutorial End my all concept is clear about ik end fk Thanks you so much ❤️ Please upload more animation tutorials i want to learn animation from you or if you have any paid course please let me know Thank you so muchhh ❤️❤️

[@alexonstory]

Happy to hear the video helped and your understanding the concept. Thanks for your note! I have no paid courses at this time. I'll keep uploading more videos :) Thanks again!

[@yasirhussain1692]

Thank you so much, sir you are the best ❤ waiting for the more exciting animation tutorials@@alexonstory

[@chewlsyy]

The only creator who explain ik fk this simple🤩

[@alexonstory]

Really happy to hear that! Thanks for your comment :)

[@Justakatto]

This was incredibly useful tysm!

[@LouisBadak]

Really good tutorial, thanks a lot !!

[@alexonstory]

Happy you like it! Thanks for your note!

[@tipotrip-california8094]

Very much informative...

[@alexonstory]

Happy to hear that! Thanks for the note!

[@paulguchu9816]

Thank you for this

[@alexonstory]

For sure, it was fun to do! Thanks for the msg!

[@BenskiGameWorks]

Percise and humorsitic! Thank you so much!!!!

[@alexonstory]

Glad you enjoyed it! Thanks for your note!

[@ADEPS.]

The greatest jump in history.

[@alexonstory]

haha :D

[@thebulletkin8393]

Great explanation, but how do you actually set up the switch?

[@alexonstory]

Thanks! The switch is an attribute on the armature or in the rig options. I would search rigging tutorials IK/FK switch to get a more clear explanation on that.

[@tiagodomingos3930]

Useful and direct! Thanks!

[@alexonstory]

Thanks, glad it was helpful!

[@martinruizrueda]

Thank you buddy, was very clear and express! Hugs

[@alexonstory]

Glad to hear that, thanks for your note!

[@whitefoxnest]

Отличный урок! Спасибо. Прыжок внутрь блендера выглядит жутковато, но смысл понятен)))

[@alexonstory]

Thanks! Learning any software is tough at first. Stick with it and you'll slowly get it.

[@daicao4966]

Thank you so much!

[@alexonstory]

Happy to:) Thanks for your note!

[@Rohit-bd8tr]

Can you please upload a full rigging and weight painting tutorial

[@khalan6821]

This guy's video is so good

[@alexonstory]

Appreciate that, thanks!

[@P134-i3p]

NICE! great tutorial

[@alexonstory]

Glad to hear that, thanks for your note!

[@Anand_Bhatt]

Hi! Would you be able to make a tutorial on making a cg double?

[@alexonstory]

I could animate a CG double, but not build one. That's not easy and requires a good modeler and surfacing artist. Or a 3D scanner. I would look in those place to help you find what your looking for.

[@Anand_Bhatt]

That would be great! I have seen like 3D scan tutorials but not sure what would give me the best result at an indie level.@@alexonstory

[@alexonstory]

@@Anand_Bhatt Cool adding realistic animation to my list. I would look at Meta Human by Unreal. I have not played with it but it looks great. I think you can export into Blender. And even add motion clips. www.unrealengine.com/en-US/metahuman

[@Anand_Bhatt]

@@alexonstory so actually I already did make the Metahuman. The face is fine, not exact but it’s the body and clothing. Not sure how to make that match.

[@alexonstory]

That's cool! I'm not sure either. But your on the hunt, good luck!

[@CloudStrife4]

thanks mate!

[@alexonstory]

My pleasure!

[@everythingeverybody6526]

Very helpful video ^^

[@ThePetHouse]

best teatcher

[@alexonstory]

Thank you!

[@ramjatanpaswan-n1f]

thanks sir i was finding video like this and ya i noticed you have very good jawline how you achieve it 😅

[@alexonstory]

Thanks haha I think it's all that Vector cereal :)

[@Aydmain]

Thank you

[@alexonstory]

Happy to share :)

[@Jellybeancracker]

Master ❤

[@alexonstory]

Thanks Jearbear :)

[@santhoshmg2319]

Awesome I have to learn blender please refer any courses for complete process of animation start to end ( I don't know how to start and learn)

[@alexonstory]

That's awesome! I did create a video introducing Blender to beginners. kzbin.info/www/bejne/iGO1pX6wp82omK8 Walks you through the interface, hotkeys and basic tools. After that follow this beginner friendly course. kzbin.info/www/bejne/mqu7aXeeg5ytrbM Hope that helps you!

[@santhoshmg2319]

@@alexonstory thank you

[@alexonstory]

For sure :)

[@ONEMANFORALL]

Thank you.

[@alexonstory]

Happy to share!

[@CyimoMut]

great

[@alexonstory]

Thanks :)

[@oozcroom]

Question about switching I haven't found an explanation to yet. If you switch from FK to IK at the point of contact with something, how do you avoid it screwing up the pose, since switching to IK makes the geometry jump back to the IK position.

[@alexonstory]

Great question! Some new rigs do have IK/FK matching. But you don't need that. I do switch over 1 frame. Then eyeball the position of the hand back to were it was before. If you make the switch on action and over 1 frame no one is going to tell. Hope that helps!

[@oozcroom]

@@alexonstory oh I see. Thanks for replying! Great videos!

[@dandylion-evn7w2]

Ik for legs and FK for everything else. So what about fixing fingers for retargeted animation?

[@alexonstory]

Yeah pretty much Ik for legs Fk for feet, yup! I don't work with mo-cap so I don't know. But I think mocap is retargeted to all FK bones, then a rig is placed on top of that, that can then have either IK or Fk.

[@dandylion-evn7w2]

@@alexonstory What about in general not mocap should fingers have ik or fk bones?

[@alexonstory]

They can, but most times FK is all you need for fingers.

[@devendrapisda3528]

Thank you so much 😭😩

[@santhoshsivan-xd6ki]

Do more rigging tutorials

[@alexonstory]

Will work on more for sure!

[@kaproductions777]

Ur model is scanned yes? From different program

[@alexonstory]

haha yes from life:) It's just me on a green screen.

[@kaproductions777]

@@alexonstory amazing bro but how u export as model?

[@alexonstory]

I took a screen grab of me when I came to a rest and stopped the video. I took that screen grab and created an alpha around me. Saved that and in Blender created a plane with my image texture. I added more definition to the plane and added some control bones to affect the different parts of my body. So essentially I made a paper cut out of myself.

[@kaproductions777]

@@alexonstory u good my friend

[@alexonstory]

@@kaproductions777 Thanks!

[@Royzilya]

What would you use for a long tail?

[@alexonstory]

FK is easier to set up for a long tail. Animating in FK is also easier to build in offset/overlapping action. Depending on the action, however it is nice to have a tail in IK. As posing becomes much faster. I would say if it's a pony tail or a cats tail I would animate it in FK. If it's a creatures attack tail that needs more performance I might go for IK with the Tail Rig system following the body COG. Hope that helps!

[@warriormaddy420]

thankyou

[@alexonstory]

My pleasure :)

[@aliakbary532]

Thank youuuuuuuuu

[@mitzuGamingE]

Did you 3D scan yourself or that was 2D just wanna know 😂

[@alexonstory]

😁 I filmed myself on green screen then picked a frame to freeze frame. Cutout my shape and rigged myself in Blender.

[@mikedavis7001]

Blender 421, ik for me is why harder even for basic anim, ue4 tool mr mannequin and i want to create a basic draw both weapons from the back at the same time

[@настя-м2у1й]

How to switch between IK and FK automaticly?

[@warehousevirtuals]

Hahashdsa I liked the video for the jump part hahahah

[@warehousevirtuals]

and subbed for quality content 👍😉

[@alexonstory]

haha yeah that paper cut out jump is pretty funny! Thanks for your notes!!

[@shuggielaufquen8371]

dude you lool like a realistic 3D model. Like apple vision

[@alexonstory]

haha thanks 😁

[@abdullahabdozied208]

Sound , please ?

[@alexonstory]

:)

[@Nakopal_Nasobiral]

wow that's what we call "clearly explained"

[@theblindbandit_76]

Lol did not expect you to literally jump in. I liked the terrible animation too xD

[@alexonstory]

:D haha nice, thanks!

[@RizkiBockings]

i dont expect u really jump to blender😂

[@alexonstory]

:D haha

[@IsraelItulah]

You look like the punisher from Netflix lol

[@alexonstory]

haha you just gave me this years Halloween costume idea! :)

[@EmilioRohn-z1y]

Garrison Ports

My teacher at college is so fucking bad that he didnt even explain what fk and ik mean. He just said there is fk and ik. And thats it. No explanation. I hate him.

[@alexonstory]

That sucks! Unfortunately there are a lot of bad teachers in this space. Good for you for searching around.

[@tonyblowthomson8474]

Smith Kevin Hall Anthony Perez Barbara

[@bacon6255]

T

[@batnikelam-mavzer443]

Have you been in any fights in the last year?

[@alexonstory]

haha why do you ask? I used to be a fighter?

[@danimal519]

thanks bro!!

[@abdullahabdozied208]

Sound , please ?

[@alexonstory]

Is the audio off? Too hot?

[@abdullahabdozied208]

@@alexonstory no , I mean the name or type of music in the video and thank you

[@alexonstory]

@@abdullahabdozied208 I'll have a look and see if I can find it :)

[@alexonstory]

@@abdullahabdozied208 So I used Shazam to find it, love that app! kzbin.info/www/bejne/fZfdYXykjbN4nsksi=O6PZNjX1IQpDtu8r It is a really cool sounding song.

[@abdullahabdozied208]

@@alexonstory Thank you for your interest