Real 3D shadows with greenscreen footage in Blender
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- Опубліковано 1 лип 2024
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Getting realistic shadows with greenscreen footage can be difficult. but here are three techniques using Blender and Adobe After Effects to help make your VFX compositing look realistic.
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- CONTENTS OF VIDEO -
00:00 Introduction
00:10 1. Real shadows with Blender
02:42 2. Shadows from greenscreen footage
05:08 3. Rotoscope :(
06:14 4. Fix it in production - Фільми й анімація
This is really helpful, I was always confused with the green screen meathod in blender but this video clears it. Thanks!
Truly helpful for many. Thanks🤝
You are really helping me! Thank you man!
Good job. You can also duplicate the image plane and put it on the ground with a black shader for the shadow.
Oo that would be great for EEVEE especially!
@@AldenPeters1 thanks for this wonderful tutorial…pls I need help…my green screen footage I keyed out in after effect and imported into blender(PNG);the shadow is not updating while the actor is moving,the shadow is just static…but it plays very fine in cycles…and I don’t want to use cycles to render but eveee because of the shorter time.I have adjusted all the shadow settings still not working…STRANGE
your content is awesome bro! Very inspiring, this is the second video I saw from you I just subbed. Keep rocking! Thanks for sharing these techniques.
Thank you Walter!
Excellent video!
This channel is gonna grow fast!
🙏
thanks, my friend
Next time, you can try to desaturate the shot and just do rough roto for the shadow,the apply a multiply mode and reduce the opacity till you're satisfied. Also I guess you missed on applying the spill killer on the real shadows. But anyways, I really appreciate the time and effort you've taken to do this.
Thanks
I’m trying to make a dance sequence with a green screen and try to keep the dancer on the floor perfectly and idk the fastest way to do it
Hey man thank you for this video, I am in the process of pulling my hair out because of these elusive realistic shadows , so I appreciate you teaching me and letting me know that I’m not the only one haha!!
Glad it was helpful!
Is there a playlist or something I can watch to learn everything you did to create that film? This is fantastic
Thank you! I have some production diaries in a playlist and tutorials as well- I’ve been making stuff as I continue along. Any particular part of the process you’d like to know more about?
Oh gosh:::: I wish I came across this video before. I'm working on a video with keyed footages. I made duplications of the image planes enabling them in the camera and keeping the shadows and glossy reflections only in order to place those shadows wherever I want. I then made meshes of feet and placed them between the planes and duplicated ones to project only their shadows and animated them. Not the quickest solution, but worked. I would have done that at compositing time if I saw your video before !!!! But thanks for sharing your work. Really helpful !!!
That’s also a good technique!
This is really good. This question has been bothering me. Is there a better way to generate real-time shadows, and why isn't there a more automated way to handle front and back foot shadows
Good content
How would you go about keeping the image as plane in the correct space when animating the camera?
top content😍
Thank you!
Hey bro can you advise me wiche computre should i use to work perfect on blender without any issues , thanks a lot and keep going
how to make shadows for green screen in Blender? Do it in AfterEffects!
Finally someone explained this and showed the process! Very helpful! I`ve been searching for solution to this problem as I was struggling with it in my projects!
Could you also please explain in a video how do you manage edges after keying? I have a problem with grey edges once I import them in Blender - still cannot figure out how to approach it.
Definitely! Are the gray edges only visible in Blender or do they show up if you throw something behind them in another software too?
@@AldenPeters1 I do keying in After Effects by using Red Giant primatte keyer, and I make sure that edges are nice, little bit with blur, matte shrink etc. So my edges after keying are semi-transparent (or like feathered) a few pixels - no grey edges. I make my render with alpha straight. Then I import it in Blender and these few pixels on edge arrange grey line - it`s tinny, but still it`s noticeable and doesn`t blend well with the background. I`ve tried different blending modes in Blender, but I don`t see any difference or improvement by switching between them. So I`ve been experimenting with compositing in Blender (by using render layers) and also importing renders from Blender into After Effects, but I`m not satisfied with the result.
@RealTimeX I am using alpha straight, besides when I render keyed file in AF, it`s set on straight by default without possibility to change it. Maybe there is some other tick/menu that am not aware of?
@@gatis.pastars if i remember correctly i think captain disillusion just did a video on this issue.
@@traderz13 Okey, thanks! I'll take a look!
I had a little trouble following part 2 and 3 but I'm a big fan and patron of Ian's and have watched that video several times and I think you explained it better. I'd encourage you to do a bit more in depth tutorial of technique 2 and 3, maybe with a simple demo scene rather than your production example as that was a bit overwhelming. Thanks for doing this.
Thanks for the feedback! Would it be more helpful to walk through it in real time instead of showcasing the end result?
@@AldenPeters1 Wow that was fast!. Yeah, I think its just because your production example, while very cool, is a bit overwhelming at least for me as a n00b. I'd really love to see parts 2 and 3 explained with a simpler project. I think I understand, but because you're showing it after the fact its hard to follow. Unlike your Ian technique at the beginning or your F-spy video which were very clear. So I don't know if you need to do it in real time but a bit more step by step would be very interesting. Thanks for taking my comment so seriously. As an unmonetized tutorial creator with a small following I'm a sucker for good videos with a low view count, but I agree with JJ Hooks comment that I don't think your channel is going to stay that way for long.
Of course! I appreciate the feedback. I thought it might have been a little too quick anyways so good to know my gut feeling was right!
Would making a super low poly version of the actors and matching their movements to get shadows work then setting them to not render?
This method is more work intensive but useful if you have a 3D enviroment with textures and reflections
I've done this for a shot where I used a simple mesh to help cast a shadow on the wall, but it was all off camera and pretty soft shadows (also I should have added this to this video!) but for more precise movements like full body walking, that would be pretty labor intensive as Philonius mentioned
Can you make a tutorial on how to match green screen footage with cgi clip🙏💯
I'm compiling a list of greenscreen techniques and fixes and things that I've come across -- I'll add this one to it as well!
@@AldenPeters1 Thanks bro ❤️💯
Just posted a tut of greenscreen tips/tricks. LMK if you find them helpful! ua-cam.com/video/lPMrrkxyjOU/v-deo.html
can you share your full workflow sometime later
For sure! Which part of the workflow do you want to see more of?
@@AldenPeters1 From the greenscreen key to Cg integration in live action
Still working on a full workflow tut but in the meantime you might find this greenscreen tut helpful! ua-cam.com/video/lPMrrkxyjOU/v-deo.html
If you are gonna offer that it COULD be a dumpster fire then you ought to follow through and allow it to be NON-kept-to-self.
Because you want the TRUTH more than a group of sycophants, right? How can you improve from dumpster fire without valid feedback?
Anyhoo it was useful, thank you.
Boooo Rotoscoping! So tedious! 😅