Motion Operators, a motion graphics toolkit for Houdini created by Henry Foster (Toadstorm). https://www.motionoperators.com https://linktr.ee/motionoperatorshttps://bsky.app/profile/motionoperators.comhttps://bsky.app/profile/motionoperators.com/post/3mrdertgg722zA 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 https://youtu.be/75iUD_9M1bk23 Jul 2026 17:35 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mrdertgg722zhttps://bsky.app/profile/motionoperators.com/post/3mptug2lpr222A 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: https://github.com/toadstorm/MOPS/releases/tag/v1.1204 Jul 2026 20:07 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mptug2lpr222https://bsky.app/profile/motionoperators.com/post/3mmcw3tkc5c2jThe 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: https://youtu.be/g9eSle9IVjU?si=6hHrMTtqXihDvAlD 2: https://youtu.be/J2g0v1k6MBs?si=L_Dx4H_3wrGO4SzY 3: https://youtu.be/q_aD6sza6gA?si=uhtKjk5-_idR4hPb20 May 2026 22:06 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mmcw3tkc5c2jhttps://bsky.app/profile/motionoperators.com/post/3mjp7v52zsc2fThe 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 https://www.toadstorm.com/blog/?p=116817 Apr 2026 15:18 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mjp7v52zsc2fhttps://bsky.app/profile/motionoperators.com/post/3mfpnffghv22yMatt 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: https://www.youtube.com/live/MsyvhOR0BIk25 Feb 2026 21:39 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mfpnffghv22yhttps://bsky.app/profile/motionoperators.com/post/3me2lfu4yoc27A 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: https://github.com/toadstorm/MOPS/releases/tag/v1.1104 Feb 2026 19:12 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3me2lfu4yoc27https://bsky.app/profile/motionoperators.com/post/3mdlnld4mzk2nMy 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: https://www.houdini.school/courses/mops-motions-operators-for-houdini29 Jan 2026 20:41 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mdlnld4mzk2nhttps://bsky.app/profile/motionoperators.com/post/3mbuhuq52j22gabsolute insanity. a mad genius. https://www.youtube.com/watch?v=0IgMXhZy8xI07 Jan 2026 22:03 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3mbuhuq52j22ghttps://bsky.app/profile/motionoperators.com/post/3m6igulx5vs2dMOPs 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/ https://motionoperators.com/info/mopsplus/25 Nov 2025 22:57 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3m6igulx5vs2dhttps://bsky.app/profile/motionoperators.com/post/3m3vrpomc6223A 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: https://motionoperators.com/blog/index.php/2025/10/23/introducing-mopscam/24 Oct 2025 02:00 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3m3vrpomc6223https://bsky.app/profile/motionoperators.com/post/3lxsr33fl4k2gHappy 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: https://motionoperators.com/blog/index.php/2025/09/01/mops-v1-10-2-experimental/01 Sep 2025 23:30 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lxsr33fl4k2ghttps://bsky.app/profile/motionoperators.com/post/3lxczzuj7bc2jHappy 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!26 Aug 2025 17:28 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lxczzuj7bc2jhttps://bsky.app/profile/motionoperators.com/post/3lvmnuq2hsk26I 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 https://www.toadstorm.com/blog/?p=101005 Aug 2025 02:26 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lvmnuq2hsk26https://bsky.app/profile/motionoperators.com/post/3lpp5uze2yc2aThe MOPs website (and toadstorm.com) will be offline for less than 1 hour for some maintenance and improvements. Thanks for your patience!21 May 2025 17:47 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lpp5uze2yc2ahttps://bsky.app/profile/motionoperators.com/post/3lp2wogouec2wA new Experimental release of MOPs is now available! This is mostly just minor bugfixes and QoL improvements. Details on the release page: https://github.com/toadstorm/MOPS/releases/tag/v1.10.1e13 May 2025 16:45 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lp2wogouec2whttps://bsky.app/profile/motionoperators.com/post/3lndr7is7i223I'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.21 Apr 2025 18:11 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lndr7is7i223https://bsky.app/profile/motionoperators.com/post/3ll62u46sks2wI 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 https://www.toadstorm.com/blog/?p=112325 Mar 2025 00:57 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3ll62u46sks2whttps://bsky.app/profile/motionoperators.com/post/3lk4sqotdv22aA 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: https://motionoperators.com/blog/index.php/2025/03/11/mops-new-release/11 Mar 2025 19:34 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lk4sqotdv22ahttps://bsky.app/profile/motionoperators.com/post/3liixbwvnyk2qI'm trying to get another fun new toy done for the next release: MOPs+ Rig Aim. Enjoy watching it wave Paul around! https://motionoperators.com/blog/index.php/2025/02/18/mops-rig-aim/19 Feb 2025 04:37 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3liixbwvnyk2qhttps://bsky.app/profile/motionoperators.com/post/3lfqevnr7yc2jSome info about the upcoming improvements to MOPs+ Collision Geo: https://motionoperators.com/blog/index.php/2025/01/14/mops-collision-geo-1-1/14 Jan 2025 23:13 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lfqevnr7yc2jhttps://bsky.app/profile/motionoperators.com/post/3lfjbaolhx225I'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/ https://motionoperators.com/blog/12 Jan 2025 03:19 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lfjbaolhx225https://bsky.app/profile/motionoperators.com/post/3lbx6ffpxws2i🚨 Black Friday sale! Today through 12/1, get a MOPs Plus license for 20% off using the coupon code MOPSFRIDAY2024.27 Nov 2024 18:25 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lbx6ffpxws2ihttps://bsky.app/profile/motionoperators.com/post/3lbn3lgxj522ii know this is a business account or whatever but i just baked some really good bagels and you can't stop me from posting them23 Nov 2024 18:08 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3lbn3lgxj522ihttps://bsky.app/profile/motionoperators.com/post/3l7bskpz7xu2tA 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/24 Oct 2024 19:37 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3l7bskpz7xu2thttps://bsky.app/profile/motionoperators.com/post/3l7552meubn24 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: https://github.com/toadstorm/MOPS/releases/tag/v1.10.022 Oct 2024 23:01 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3l7552meubn24https://bsky.app/profile/motionoperators.com/post/3l4tzuzhfbt2bThe Houdini HIVE Horizon talks from Toronto are now available online, including my talk about MOPs and UX in Houdini! Check them out here: https://www.sidefx.com/houdini-hive/hive-horizon-2024/23 Sep 2024 21:20 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3l4tzuzhfbt2bhttps://bsky.app/profile/motionoperators.com/post/3l4egivzr6e26Trying 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!17 Sep 2024 16:23 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3l4egivzr6e26https://bsky.app/profile/motionoperators.com/post/3l2dn6nrcvy26I'm going to be presenting at Houdini HIVE in Toronto next month! Hope to see some of you nerds there... https://www.sidefx.com/houdini-hive/hive-horizon-2024/22 Aug 2024 22:00 +0000at://did:plc:27f3h5tb7aevrqwflkcmbx27/app.bsky.feed.post/3l2dn6nrcvy26