A new MOPs Plus release is now available! This simplifies and improves the MOPs Camera Blender interface, ports MOPsCam to Solaris, and adds Houdini 22 compatibility! Full changelog is available here: www.motionoperators.com/changelog/ Features demo: youtu.be/75iUD_9M1bk

MOPs Plus release 07/23/2026

YouTube video by MOPs

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A new release of MOPs is now available! This adds a new MOPs Orient Curve node and fixes a number of bugs. Details on the release page: github.com/toadstorm/MO...

Release MOPs v1.12 · toadstorm/MOPS

Fixed a bug that caused the MOPs Spring Modifier to accidentally double-transform if mops_orient is not the identity. Fixed a bug in the MOPs Spring Modifier that could cause pivots to be accidenta...

github.com

The MOPs course at Houdini.School is now available to you on YouTube! This is a complete course on the open source version of MOPs, explaining how the system works, practical use cases, and the math behind it all. 1: youtu.be/g9eSle9IVjU?... 2: youtu.be/J2g0v1k6MBs?... 3: youtu.be/q_aD6sza6gA?...

MOPs: Motion Operators for Houdini Part 1

YouTube video by Houdini.School

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The MOPs tool for orienting curves using parallel transport is eight years old now, and mostly made obsolete by Houdini's native tool for it, but I wanted to revisit our old implementation and improve it a bit anyways. I documented how it works here: www.toadstorm.com/blog/?p=1168

Matt Milstead from Mograph.com did a little interview with me yesterday where we talked about Houdini, MOPs, and motion graphics in general. Full video is online here: www.youtube.com/live/MsyvhOR...

LIVE: Ep 465 Special Guest Henry Foster, AKA Toadstorm!

YouTube video by Mograph

youtube.com

A new stable release of MOPs is available! The Experimental build already supported Houdini 21, but this was confusing for new users, so that update (plus some others) are now merged into the main branch. Details here: github.com/toadstorm/MO...

My MOPs course on Houdini.School is now free! If you want a start to finish course on how (almost) everything works, plus the math background, you can watch it all here: www.houdini.school/courses/mops...

MOPs: Motion Operators for Houdini

This course provides an overview of the MOPs workflow and how it integrates with the rest of Houdini, shows concrete examples of how MOPs can be used in both motion graphics and visual effects workflo...

houdini.school

absolute insanity. a mad genius. www.youtube.com/watch?v=0IgM...

How To Make Music In Houdini in 2 Minutes

YouTube video by Adam Katz

youtube.com

MOPs Plus for Houdini node-locked licenses are now 20% off through Monday, December 2nd. Get access to MOPs tools for typography, dynamics, cameras, and more for cheap! Use the coupon code MOPSFRIDAY2025 at checkout to apply the one-time discount. motionoperators.com/info/mopsplus/

A new MOPs+ release is out! This introduces the MOPs+ Camera, a fully-featured camera rig with all kinds of fun and quick controls for animating cameras easily in the viewport. Check the demo videos and the full release notes here: motionoperators.com/blog/index.p...

Happy Labor Day! I just added Houdini 21 / Qt6 hotfixes for both MOPs and MOPs Plus, and a few cool little upgrades to MOPs... now you can easily cycle falloffs! Check the blog for details: motionoperators.com/blog/index.p...

Happy Houdini 21 release day! H21 is compatible with both MOPs and MOPs Plus (for Python 3.11) so you shouldn't have to worry about any upgrades. Have fun!

I wrote a little article here for VFX artists about what environment variables are, how to manipulate them, what various .env files are actually doing, and how to roll your own pipelines to organize your projects at home. Look here: www.toadstorm.com/blog/?p=1010

The MOPs website (and toadstorm.com) will be offline for less than 1 hour for some maintenance and improvements. Thanks for your patience!

A new Experimental release of MOPs is now available! This is mostly just minor bugfixes and QoL improvements. Details on the release page: github.com/toadstorm/MO...

I'm looking for software developers who can help me write a floating license server for MOPs+. Some experience in Houdini is a plus but not required. If you're interested or know someone who is, please reach out to me at henry@motionoperators.com.

Apex is still pretty scary and new for most existing Houdini artists, but there’s no need to be scared anymore! Matt (@cgwiki.bsky.social) will provide a jargon-free explainer of Apex at #EPC2025! Get your tickets now: everythingprocedural.com #everythingproc #ProcGen #Apex #GameDev

I wrote a little primer on rigid body dynamics in Houdini after seeing a lot of similar questions online. Bullet is a pretty deep rabbit hole to fall into and there's a lot of legacy stuff that's very confusing for new artists... hopefully this helps you get started! www.toadstorm.com/blog/?p=1123

A new release of MOPs+ is now available! This adds the new MOPs+ Rig Aim node, as well as a new streamlined version of MOPs+ Collision Geo. More details on the MOPs Blog: motionoperators.com/blog/index.p...

I'm trying to get another fun new toy done for the next release: MOPs+ Rig Aim. Enjoy watching it wave Paul around! motionoperators.com/blog/index.p...

Some info about the upcoming improvements to MOPs+ Collision Geo: motionoperators.com/blog/index.p...

I've updated the MOPs blog page to use a new Wordpress format so it's easier to post about updates and development in general, and so people can use RSS to get updates instead of social media. The updated page is here: motionoperators.com/blog/

🚨 Black Friday sale! Today through 12/1, get a MOPs Plus license for 20% off using the coupon code MOPSFRIDAY2024.

i know this is a business account or whatever but i just baked some really good bagels and you can't stop me from posting them

Little Apex explainer targeted at experienced Houdini folk. It's rough (got a cold, ugh), but figured it'll be useful to people like me who were simultaneously interested and apprehensive. Will likely re-record later when my voice recovers and I learn more things... www.youtube.com/watch?v=U9-e...

apex overview

YouTube video by matt estela

youtube.com

A new build of MOPs Plus is now available! This introduces Infection Falloff 1.1, with a better interface and support for "healing" and reinfection, some improvements to MOPs Typography and Apply Attributes, and more! Details on the changelog: www.motionoperators.com/changelog/

A new Stable release of MOPs is now available! Lots of bugfixes, nitpicks, UI improvements, and a unit testing module for developers. Details on the Release page: github.com/toadstorm/MO...

Release MOPs v1.10.0 · toadstorm/MOPS

A new Stable release! This includes all Experimental changes between 2023-12-14 and now. Highlights include: Added official unit tests for developers! (please contribute T___T) Fixed a broken chan...

github.com

The Houdini HIVE Horizon talks from Toronto are now available online, including my talk about MOPs and UX in Houdini! Check them out here: www.sidefx.com/houdini-hive...

HIVE Horizon 2024 | SideFX

HIVE Horizon 2024

sidefx.com

Trying to solve an age-old Houdini problem here. Whenever it's done, I'll release the full toolkit for creating self-installing Houdini packages as open source software. Doing my best to keep making Houdini easier!

I'm going to be presenting at Houdini HIVE in Toronto next month! Hope to see some of you nerds there... www.sidefx.com/houdini-hive...