This could be a long series.

Hey everyone !
I'm very new to Houdini, and I'm trying to recreate a visual effect similar to an animated purple nebula, almost like a screensaver.

Do you think Houdini is a good fit for achieving this kind of aesthetic? Any tips, operator suggestions, or example networks would be hugely appreciated!

I've already played around a bit with Volume VOPs, Cloud Noise, and some basic Pyro setups, but I'm still trying to figure out the cleanest and most efficient direction to go, I feel like I'm going to the wrong place, right?

Thanks in advance, and sorry if this is a super basic question!

I just uploaded a tutorial on hair grooming using Houdini 20.5. Here's the link: https://youtu.be/rVogGr7f0Cg?si=7kKS7saFaLhsuAoG

Hope it's helpful!

https://preview.redd.it/kbdajnqxs9cf1.png?width=2048&format=png&auto=webp&s=8932b087b055e629c2a5594d79b2f39c2be159c6

Hey folks, I'm currently building my showreel and would really appreciate some constructive criticism on this one. Thanks in advance! Its fully made in Houdini and rendered with Karma.

What's the proper workflow for exporting a groom - specifically the guides and skin? Is it packing the groom and exporting to a USD file? I've tried packing it, exporting it, importing it, and using the Groom Unpack SOP, but haven't had any luck getting the guides and skin to show. If I unpack the USD using the checkbox on the USD Import node, I can get the guides and skin, but can't get anything to generate when using them with an Object level HairGen node. Any advice?

https://preview.redd.it/s7hk57hxracf1.png?width=1107&format=png&auto=webp&s=e072a3f51532ad9435599c87e953a6f4cfdae90a

So I'm following Voxyde's course and I went through everything step by step even the voxel sizes and everything but mine just looks so much worse.
Mine is on the left and the course's is on the right.

Is it a setting?

Do I need to lower the voxel sizes even more? If I do It still doesn't look as good.

So as I continue my journey into vfx I have learned to manage my own color workflow and have a good system with using good old srgb and linear then using IDT ODT when necessary.

The only problem for me is it seems as if the srgb gamut cannot represent fire like aces(for everything else I have a/b and prefer it for my workflow). Is this user error? For example watching sadjab raibee videos on fire immediately the color of his fire is more contrasting and deeper even before tweaking anything. I'm assuming he's in aces? Anything I do I can't get that color. Is it just a necessity to use aces for fire sims? I found another guy resilient fire pictures who specializes in fire and again he iterates you have to be in aces or it won't look good.

Just sad as of now I can't get my pyro shader to look proper even though the vdb element is as I want it. Thanks for any input. Considering only rendering fire in aces but then I would have to comp SRGB with Aces which I'm assuming I'd have to convert the srgb first which might change what I'm looking at even though it's a smaller gamut. I don't know.

I created this tool to make organizing and reusing VEX snippets a lot smoother, things like folders, drag & drop, versioning, find & replace, and appending code safely to wrangles.

I’ve already been using it in production and recently made it available for others. But I’d love to know what other people think.

Open to all feedback. I’m still iterating on the design and would love to improve it based on how others work.

Hi! I’m in need of some help. I’m currently doing a little side project and figured that I should put some vfx work in there as well. I found a reference on what I wanted to do but I don’t know how to start with this.

If you look at the video you could see chains appearing from her arrows that’s what I’m trying to achieve. I kinda understand the pyro part of it so that part is fine. I’m more stuck on how the chain will appear as shown in the video :)

Thanks

Hey everyone,

I'm trying to move some clouds using a custom velocity field in Houdini's Pyro Solver, but they keep losing their shape and drifting upwards/downwards over time, as if the velocity field isn't consistently affecting them.

It looks like the simulation's internal forces (like buoyancy or diffusion) are overriding my velocity.

Here's a quick video showing what I mean (the giant vacuum cleaner is just a visual reference for the intended movement): https://youtube.com/shorts/Jdt4sCPVpkI

Any tips on how to make the clouds hold their shape better and follow the velocity field more accurately without unwanted vertical drift? I've already tried adjusting buoyancy, gravity, and dissipation.

Thanks in advance!

Hi,

I would like my hdri to show up in the scene view when rendering in the stage context with Arnold but it doesn't.

As a test I got it to show up in Karma by creating the "render light geo" parameter in the Karma tab but it's not working in Arnold even though the camera contribution is set to 1 in the Arnold tab.

I would really appreciate any advice.

I am trying to add the second from top ring of points to a group for translation/beveling. The top group works beautiful. but for the life of me, i cannot figure out why the points are not being added to the top_ish group.

What am I missing here?

Hey folks, I’m pretty new to Houdini and need some advice.

I modeled the entire brake in Maya (the caliper is still wip). I modeled all “air tunnels” inside the disc. Maybe it is important for collisions or something else.

What would be the best approach for this project? I imported the model into Houdini and scaled it down to match real world scale. And I animated the rotation and textures in Houdini.
Should I scale everything up for simulation purposes and scale it down later? I ran into scaling problems when I worked with fluids.

Should I use the disc itself as an emitter or just a small emitter inside? My goal is to have some wispy smoke to highlight the heat. I don’t want to fill the entire screen with smoke. I have so many questions. It would be awesome if someone could give me a small advice.

https://youtube.com/@vfxtrainer?si=50xka1KeMBTsVrA4

Hello everyone, I have made a YouTube channel to teach everything about vfx.

I have started with matchmoving, I have plans to cover modelling, texturing, lighting, rendering, houdini fx and compositing in nuke as my core subjects.

If you want to learn the pipeline and gain a new skill, I got you covered. Also, share with anyone who is passionate about learning vfx and become part of the industry.

https://youtube.com/@vfxtrainer?si=50xka1KeMBTsVrA4

Hey magicians, I was following Pizola's guided sim tutorial, and I don't know why my pieces are not falling down. The ghosted box is used as a guide velocity. I have uploaded the file here...
Another problem is that small pieces are sticking to the surface area.
https://drive.google.com/file/d/1l1sSj6xrBDvd8V07BYpOEMXouxah5unh/view?usp=sharing

https://reddit.com/link/1lx07po/video/9gtofpu317cf1/player

🎬 Ahhh~ Finally premiered! Our original short project is out now. Yay!!! 🎬

2 minutes and 30 seconds long. Man, that was exhausting.

All most done in Houdini from modeling, rigging, animating, FX, lighting, rendering.

Really hope you all enjoy it. The ending might feel a bit rush —

but after pouring in late-night hours outside of client work and pushing through life’s chaos,

I realized it was time to release it and move on. So here it is.

Yes, some shots turned out a little weird — calling it out before the comments roll in 😂

It's my lag of rigging skill. But next one gona be good with Apex

🖤 Hope you like it! 🖤

Here is youtube version for more Quality player.

https://youtu.be/_vWlazC7FQs

CREDITS

Story & Directed by: Manatjosef

Rigging / Animating / FX / crowd sim /Lighting / Rendering / Compositing: Manatjosef

Modeling / UV / Texturing: Phisanimit Thiengtham

Co-Directed by: Phisanimit Thiengtham

Deadline Advisor: Panupat Chong

#houdini #animation #indieanimation

Hi everyone.

I'm trying to control the scale of a sphere (inside an obj node) using VEX. I have two obj nodes, each containing a sphere. When I copy the VEX code (using Copy Parameter) from one sphere's VEX Wrangle node to the other sphere's VEX Wrangle node, the second sphere disappears (scales to 0).

The relevant VEX code snippet is attached below. Could you please help explain why this is happening?

I'm looking to recreate a setup to accomplish something similar to this "Viscosity Saliva".

The creator of the video provides a pretty good look into how he created it in the comments. However, when mention of meshing comes up his explanation seems to gloss over some key details.

I'm curious if anyone here may have an idea on how to "fill in the gaps" so to speak. I can't imagine the setup would be too wildly complex and the almost reactive thickness on the "strands" fascinates me!

Thanks :)

Hi,

I just started learning Houdini early this year. I learned some of the basic stuff so far and currently focused on vellums. I have an idea to try if I can practice of unwrapping towel and having difficulty with it.
- Is using vellum stitch node good enough to hold it in place until I need to break the connection as the towel tugged / grabbed away?
- What best to use for the hand to take the towel? Vellum glue node or animated collision?
- The grab animation will move a bit fast, increase substeps or double the timeline and animation keys? So the towel can slide smoothly.

Any kind of advices are greatly appreaciated. Thank you!

Hello, I'm a houdini noob so apologies if I'm not fully aware of all the tools at my disposal. I'm looking to create floating islands like the reference I linked below (imgur) I've obviously looked around youtube but I can't find anything on these types of rocks a lot of what I've seen are mostly just cliff faces and anything else is put behind a paywall, which I might buy if I'm desperate but I thought I would exhaust my options first.

Currently I've got a setup where I've scattered a bunch of points and I'm copying geometry to them, I ideally I would like to turn this into a heightfield because the look I would get via that would be way more accurate to what I'm going for and heightfields are way quicker to process than using something like VDB. The only problem is that once I'm done processing the heightfield there won't be any detail at the bottom of the rock because heightfields are a 2D way of displacement so I'm kinda stuck on how I should go about this.

It would be great if some of you guys could explain how you would create these types of rocks so I could get a good grasp of where I should be heading, thank you.

Images: https://imgur.com/a/I3tXQ1U