josenovas Posted December 10, 2015 Share Posted December 10, 2015 Hello all! My name is Jose and I am a beginner in the 3d max/vray world. In one of my scenes I am trying to create a led video wall. I took as a reference a real world model : winvision air 9mm.The camera is fixed in front of the video wall. That makes creating the video wall really easy as it is just a plane. The problem comes when I want the correct look of it in the final render. I am playing a ten seconds movie on the video wall (loaded as image sequence). The camera is at 20 meters from the video wall,so it is not possible to see the physical pixels ( they are around 2mm and spaced between them 9mm). But in all my reference you can tell the pixels are there, although it is a very subtle impression. That's what I'd like to achieve in my final render. What I tried so far: - I created the pixel matrix (512x512) and applied to it a vray light material in which I loaded the image sequence. The cons are that it increases a lot the polygon count of the scene and the render comes out with a lot of noise on the video wall surface. - I tried to create and opacity mask In postproduction. I can not find the way to create an exact 512x512 matrix with 9mm gap between the 'pixels'. If any of you have any idea about how achieve a realistic led screen wall it would be greatly appreciated. Anyways thank you for your time and I hope I will collaborate more often from now on on this amazing community. Cheers! Link to comment Share on other sites More sharing options...
Chris MacDonald Posted December 10, 2015 Share Posted December 10, 2015 Do you have a screenshot of what you have already? Could you not just use a vrayblend material with the base material set as a light material with the footage, and the coat material as pure black but with an opacity map for the pixels? Seems to me to be the simplest way of setting that up. Link to comment Share on other sites More sharing options...
Andres Saarnak Posted December 10, 2015 Share Posted December 10, 2015 - I tried to create and opacity mask In postproduction. I can not find the way to create an exact 512x512 matrix with 9mm gap between the 'pixels'. For an opacity map you should try "Tiles" map in 3dsmax and set horizontal and vertical count as you need (512*512). Cap between the "pixels" is also adjustable. Link to comment Share on other sites More sharing options...
Chris MacDonald Posted December 10, 2015 Share Posted December 10, 2015 Exactly^ The tiles map could act as your opacity map. Link to comment Share on other sites More sharing options...
augustobohm Posted December 10, 2015 Share Posted December 10, 2015 What about render a mask pass just for the video wall and add the animation on after effects? It could work too... Link to comment Share on other sites More sharing options...
josenovas Posted December 10, 2015 Author Share Posted December 10, 2015 Wow!Thanks for the quick answers guys! I am trying to attach a picture but aparently I could only do it through links and all my draft renders are in my computer...I will keep on trying so you can take a look at it. I am definitely gonna try tiles in 3ds max right now....I tried in natron and in photoshop but I have no idea why I haven't thought about tiles in 3ds max. Thank you! Augusto, thanks for the tip...it is actually a really good idea. I will send the animation to render online (to pixelplow) and that might give shorter render times and therefore save me some money. Once again, thank you all! Link to comment Share on other sites More sharing options...
josenovas Posted December 10, 2015 Author Share Posted December 10, 2015 For illumination a use a vraylight with the same image sequence, just in front of the video wall. Since I can not make the image sequence look right with the vraylight material (it looks burnt as soon as you increase the multiplier a little bit) my plan was to use a standard vray material with the image sequence in the diffuse slot and then retouch on postproduction. Here is a link to one of the draft renders! https://goo.gl/photos/hWjbXoLSJtTPAkNw7 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now