What is IK and FK?

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  • čas přidán 28. 02. 2023
  • 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.
    Get more Animation Education. Newsletter: alexonstory.com/
    #blender #maya #cinema4d #characterrigging #rigs #animation #animationtutorial #rigging
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Komentáře • 158

  • @suraiya21
    @suraiya21 Před 9 měsíci +38

    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
      @alexonstory  Před 9 měsíci

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

  • @octovusbeka
    @octovusbeka Před 9 dny +2

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

  • @santhoshsivan-xd6ki
    @santhoshsivan-xd6ki Před rokem +21

    The jump was another level

    • @alexonstory
      @alexonstory  Před rokem +2

      haha it's fun to see yourself as a puppet

  • @akshayfreefireshorts9278
    @akshayfreefireshorts9278 Před 2 měsíci +8

    most epic entry in blender

  • @marilynberry9478
    @marilynberry9478 Před 2 měsíci +5

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

    • @alexonstory
      @alexonstory  Před 2 měsíci

      Happy to hear that, thank you for the feedback!

  • @fhariri
    @fhariri Před 8 měsíci +8

    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
      @alexonstory  Před 8 měsíci

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

  • @bjaanderson
    @bjaanderson Před rokem +6

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

    • @alexonstory
      @alexonstory  Před rokem +2

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

  • @Quadmyke
    @Quadmyke Před rokem +7

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

    • @alexonstory
      @alexonstory  Před rokem +1

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

  • @user-ot5ez2ny4b
    @user-ot5ez2ny4b Před 8 měsíci +2

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

  • @amirnetwork8629
    @amirnetwork8629 Před 9 měsíci +1

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

  • @GameTourist491
    @GameTourist491 Před 4 měsíci +2

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

    • @alexonstory
      @alexonstory  Před 3 měsíci

      Really happy to hear that, thanks for your comment!

  • @andres_mpr
    @andres_mpr Před 5 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 4 měsíci

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

  • @TomasHradckyComposer
    @TomasHradckyComposer Před rokem +2

    You are a wonderful teacher. Many thanks.

    • @alexonstory
      @alexonstory  Před rokem

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

  • @eobiri
    @eobiri Před rokem +2

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

  • @chinweokoli5501
    @chinweokoli5501 Před 2 měsíci +1

    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
      @alexonstory  Před 2 měsíci

      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!

  • @Justakatto
    @Justakatto Před 11 dny

    This was incredibly useful tysm!

  • @manjusha3699
    @manjusha3699 Před 6 měsíci +1

    Really explained so well! Awesome!

    • @alexonstory
      @alexonstory  Před 6 měsíci

      Thank you, I'm happy to hear that!

  • @henrimarbacher2085
    @henrimarbacher2085 Před 4 měsíci +1

    Great explanation, great exemple. Thank you very much !

    • @alexonstory
      @alexonstory  Před 3 měsíci

      Happy to hear that, thanks for your note!

  • @dohrah
    @dohrah Před měsícem +1

    Best explanation ever. Thank you!

    • @alexonstory
      @alexonstory  Před měsícem +1

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

  • @badjinx6958
    @badjinx6958 Před 3 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 3 měsíci +1

      Happy to hear that! Thanks for your note!

  • @sraztec01
    @sraztec01 Před 4 měsíci +1

    Definitely cleared up things for me. Thank you

    • @alexonstory
      @alexonstory  Před 4 měsíci

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

  • @ameenahahmad558
    @ameenahahmad558 Před 9 měsíci +2

    EXCELLENT explanation , Thank you sooooooooooooooo much .

    • @alexonstory
      @alexonstory  Před 9 měsíci

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

  • @tiagodomingos3930
    @tiagodomingos3930 Před 5 měsíci

    Useful and direct! Thanks!

  • @js3671
    @js3671 Před 5 měsíci +1

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

  • @maxportfolio1468
    @maxportfolio1468 Před rokem +1

    This lesson is great. Thanks Alex

    • @alexonstory
      @alexonstory  Před rokem +1

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

  • @LouisBadak
    @LouisBadak Před 5 měsíci +1

    Really good tutorial, thanks a lot !!

    • @alexonstory
      @alexonstory  Před 5 měsíci

      Happy you like it! Thanks for your note!

  • @ranjithcr7591
    @ranjithcr7591 Před rokem +4

    Thanks for your great lesson MASTER

  • @olliverkatana4168
    @olliverkatana4168 Před 6 měsíci +1

    Thanks for the clear explanation.

  • @-TOLINSKI
    @-TOLINSKI Před 18 dny

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

    • @alexonstory
      @alexonstory  Před 14 dny

      Glad you enjoyed it! Thanks for your note!

  • @illidoth
    @illidoth Před 2 měsíci +1

    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
      @alexonstory  Před 2 měsíci +1

      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.

  • @paulguchu9816
    @paulguchu9816 Před rokem +3

    Thank you for this

    • @alexonstory
      @alexonstory  Před rokem

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

  • @tipotrip-california8094
    @tipotrip-california8094 Před rokem +2

    Very much informative...

    • @alexonstory
      @alexonstory  Před rokem

      Happy to hear that! Thanks for the note!

  • @user-ug6hh4qg3n
    @user-ug6hh4qg3n Před 19 dny

    NICE! great tutorial

    • @alexonstory
      @alexonstory  Před 18 dny

      Glad to hear that, thanks for your note!

  • @MuhsinOKCU-uk7sf
    @MuhsinOKCU-uk7sf Před měsícem +1

    cool simple explanation

    • @alexonstory
      @alexonstory  Před měsícem +1

      Really happy to hear that, thanks for your note!

  • @martinruizrueda
    @martinruizrueda Před 2 měsíci +1

    Thank you buddy, was very clear and express! Hugs

    • @alexonstory
      @alexonstory  Před 2 měsíci +1

      Glad to hear that, thanks for your note!

  • @pesindiafc9363
    @pesindiafc9363 Před 3 měsíci +2

    That Jump was Awesome dude...😂😂

  • @daicao4966
    @daicao4966 Před 8 měsíci +1

    Thank you so much!

  • @danimal519
    @danimal519 Před 14 dny

    thanks bro!!

  • @CloudStrife4
    @CloudStrife4 Před 4 měsíci +1

    thanks mate!

  • @Jellybeancracker
    @Jellybeancracker Před rokem +2

    Master ❤

  • @user-sg3qn9cs1f
    @user-sg3qn9cs1f Před 8 měsíci +1

    You teach better than my professor!! Thank you.

  • @chewlsyy
    @chewlsyy Před měsícem +1

    The only creator who explain ik fk this simple🤩

    • @alexonstory
      @alexonstory  Před měsícem

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

  • @ONEMANFORALL
    @ONEMANFORALL Před 2 měsíci +1

    Thank you.

  • @khalan6821
    @khalan6821 Před 6 měsíci +1

    This guy's video is so good

  • @whitefoxnest
    @whitefoxnest Před 8 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 8 měsíci +1

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

  • @CyimoMut
    @CyimoMut Před rokem +2

    great

  • @Aydmain
    @Aydmain Před 3 měsíci +1

    Thank you

  • @ADEPS.
    @ADEPS. Před 3 měsíci +1

    The greatest jump in history.

  • @yasirhussain1692
    @yasirhussain1692 Před 2 měsíci +1

    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
      @alexonstory  Před 2 měsíci

      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
      @yasirhussain1692 Před 2 měsíci +1

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

  • @user-bl1zf8cq8g
    @user-bl1zf8cq8g Před 4 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 4 měsíci

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

  • @warriormaddy420
    @warriormaddy420 Před 7 měsíci +1

    thankyou

  • @thebulletkin8393
    @thebulletkin8393 Před 2 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 2 měsíci

      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.

  • @oozcroom
    @oozcroom Před rokem +1

    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
      @alexonstory  Před rokem +1

      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
      @oozcroom Před rokem +2

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

  • @Royzilya
    @Royzilya Před rokem +1

    What would you use for a long tail?

    • @alexonstory
      @alexonstory  Před rokem +1

      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!

  • @ThePetHouse
    @ThePetHouse Před měsícem +1

    best teatcher

  • @santhoshmg2319
    @santhoshmg2319 Před 11 měsíci +1

    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
      @alexonstory  Před 11 měsíci

      That's awesome!
      I did create a video introducing Blender to beginners. czcams.com/video/R2RtKzrhubM/video.html Walks you through the interface, hotkeys and basic tools. After that follow this beginner friendly course. czcams.com/video/dzX8DhN7zwQ/video.html
      Hope that helps you!

    • @santhoshmg2319
      @santhoshmg2319 Před 11 měsíci +1

      @@alexonstory thank you

    • @alexonstory
      @alexonstory  Před 11 měsíci

      For sure :)

  • @Anand_Bhatt
    @Anand_Bhatt Před 6 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 6 měsíci +1

      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
      @Anand_Bhatt Před 6 měsíci +1

      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
      @alexonstory  Před 6 měsíci

      @@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
      @Anand_Bhatt Před 6 měsíci

      @@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
      @alexonstory  Před 6 měsíci +1

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

  • @santhoshsivan-xd6ki
    @santhoshsivan-xd6ki Před rokem +2

    Do more rigging tutorials

  • @warehousevirtuals
    @warehousevirtuals Před 7 měsíci +1

    Hahashdsa I liked the video for the jump part hahahah

    • @warehousevirtuals
      @warehousevirtuals Před 7 měsíci +1

      and subbed for quality content 👍😉

    • @alexonstory
      @alexonstory  Před 7 měsíci

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

  • @kaproductions777
    @kaproductions777 Před 4 měsíci +1

    Ur model is scanned yes? From different program

    • @alexonstory
      @alexonstory  Před 4 měsíci

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

    • @kaproductions777
      @kaproductions777 Před 4 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 4 měsíci +1

      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
      @kaproductions777 Před 4 měsíci +1

      @@alexonstory u good my friend

    • @alexonstory
      @alexonstory  Před 4 měsíci

      @@kaproductions777 Thanks!

  • @shuggielaufquen8371
    @shuggielaufquen8371 Před 5 měsíci +1

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

  • @abdullahabdozied208
    @abdullahabdozied208 Před 11 měsíci +1

    Sound , please ?

  • @Sgirlie755
    @Sgirlie755 Před 4 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 4 měsíci

      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.

    • @Sgirlie755
      @Sgirlie755 Před 4 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 4 měsíci

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

  • @mitzuGamingE
    @mitzuGamingE Před rokem +2

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

    • @alexonstory
      @alexonstory  Před rokem +2

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

  • @RizkiBockings
    @RizkiBockings Před měsícem +1

    i dont expect u really jump to blender😂

  • @user-qq4zi6bv2g
    @user-qq4zi6bv2g Před 3 měsíci +1

    You look like the punisher from Netflix lol

    • @alexonstory
      @alexonstory  Před 3 měsíci

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

  • @theblindbandit_76
    @theblindbandit_76 Před 5 měsíci +1

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

  •  Před 4 měsíci +1

    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
      @alexonstory  Před 4 měsíci

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

  • @batnikelam-mavzer443
    @batnikelam-mavzer443 Před 3 měsíci +2

    Have you been in any fights in the last year?

    • @alexonstory
      @alexonstory  Před 3 měsíci

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

  • @abdullahabdozied208
    @abdullahabdozied208 Před 11 měsíci +1

    Sound , please ?

    • @alexonstory
      @alexonstory  Před 11 měsíci

      Is the audio off? Too hot?

    • @abdullahabdozied208
      @abdullahabdozied208 Před 11 měsíci +1

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

    • @alexonstory
      @alexonstory  Před 11 měsíci

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

    • @alexonstory
      @alexonstory  Před 11 měsíci

      @@abdullahabdozied208 So I used Shazam to find it, love that app!
      czcams.com/video/Gfz0InXNEhg/video.htmlsi=O6PZNjX1IQpDtu8r
      It is a really cool sounding song.

    • @abdullahabdozied208
      @abdullahabdozied208 Před 11 měsíci +1

      @@alexonstory Thank you for your interest