Position Data --> Data Visualization

emullis

Hi there.
I'm working with the Rokoko Smartsuit Pro and would like to display the x,y,z data for particular joints from the Rokoko Studio Live Watcher. That is, I'd like the audience to just see the streaming data of, say, the x coordinate of the left elbow. Is there a way to capture and display this?

Thank you for any assistance!

Woland

@emullis

Text Formatter and Text Draw are likely the actors you are looking for.

QUICK EXAMPLE FILE: tracking-displaying-rokoko-data-4.1.3-2026-06-09.izz

Woland

@emullis said:

I'd like the audience to just see the streaming data of, say, the x coordinate of the left elbow

If you right-click the Rokoko Studio Live Watcher and select the top option from the contextual menu ("Show Actor Help in Browser") there's a list of joint names. Rokoko doesn't have a tracker on the elbow, so you need to pick 'left-upper-arm', 'left-lower-arm', or do some math yourself to figure out the likely position of the elbow.

These joint names can be put into the 'point sel' input of the Skeleton Decoder actor to make it show data for just that joint (or just the selected joints if you provide a list).

emullis

This is wonderful. Thank you.

That said, Izzy is now crashing every time that I start steaming data from Rokoko Studio in. It works fine if I don't use the Rokoko Studio watcher or if I don't stream the data. If data is streaming and I add a watcher into a patch; crash. If I have a watcher already in and then turn on streaming in Studio; crash.

Here's what I'm running:

- Izzy 4.1.1
- Rokoko Studio 2.6.1 (most recent version)
- MacBook Pro - M2 Pro - Tahoe 26.3.1

Please let me know next steps.

Woland

@emullis

Questions for you:

Can you try in Isadora 4.1.3 (the most recent public version)?
Can you try with the legacy version of Rokoko Studio?
Are you working with a Rokoko SmartSuit Pro II, or the first version of the Rokoko SmartSuit Pro?

emullis

1. I'm using Isadora 4.1.3. I entered the wrong version in my original post.
2. I checked it with Legacy, and Izzy is not crashing with that version.
3. I'm working with the SmartSuit Pro II. The crash happens when I stream from the suit or from a mocap recording (e.g., no suit). Not sure if that matters.

Woland

@emullis said:

SmartSuit Pro II

There are two flavors of Pro II. One is designed to be used with the Smart Gloves, and one isn't. Which flavor are you working with, and, if it's the gloves one, are you using the gloves or not?

emullis

Mine is the no Smart Gloves flavor.

Woland

@emullis said:

2. I checked it with Legacy, and Izzy is not crashing with that version.

Ah, and so you can't use the v2 Suit with the legacy version of the software?

emullis

That's right. To test out Legacy, I streamed one of the pre-packaged mocap recordings into Izzy. That worked fine; no crash.

To reiterate the problem, I used the same setup for a show back in January, and everything worked great. The only difference now is software. I updated Izzy to 4.1.3 a few weeks ago. Rokoko required me to update the Studio software to the current version a week or so ago.

To reiterate the problem: the setup is: v2 Smartsuit, recent version of Rokoko Studio, Izzy 4.1.3, and a MacBook Pro). The crash happens when I wear the suit or stream a recording of me in the suit. I have both softwares running and, when I click "Activate" on the streaming option in Studio, the Studio Live Watcher starts receiving data and then Izzy crashes. Sometimes the crash happens immediately and, at others, it takes a few minutes to happen. I've been sending the crash reports, assuming that's helpful.

Let me know any thoughts / suggestions.

Best,
Eric

emullis

Quick follow-up: I completely shutdown and restarted my Mac and restarted. No crashes.

Woland

@emullis

So you're all good now? Maybe it has to do with the order in which things are done. Try to experiment with whether it crashes or doesn't crash if:

You open Isadora, then Rokoko, then start streaming
You open Rokoko, then Isadora, then start streaming
You open Rokoko, start streaming, then open Isadora

To make clean tests, I'd do a restart between trying each of these.

emullis

I thought it was ok, but the problem is back.
I tested the three options you listed, restarting my computer between each.
All three sequences resulted in immediate crashes. I set the crash reports for each.

Let me know next steps,
e.

Woland

@emullis

I'm very confused now that it worked without gloves for you, as we apparently had an issue in our database that said that Rokoko crashes with the Rokoko SmartSuit Pro II if you're not using gloves, but then we resolved it because it looked like the problem was resolved.

If we can't reproduce it reliably, we can't make a fix, so we need to isolate what causes and doesn't cause it.

Between it crashing, then not crashing, then crashing again, did you do anything like:

Plugging in the suit while streaming instead of using wifi
Changing the network the suit was on
Changing the network your computer was on
Changing the port being used
Un-checking and re-checking streaming in Rokoko
Using a different Scene in Rokoko
Unassigning and/or re-assigning the suit from an actor in Rokoko before starting to stream data
Unassigning and/or re-assigning the suit from an actor in Rokoko while streaming data
Unassigning and/or re-assigning the suit from an actor in Rokoko after ceasing to stream data
Anything else you can think of?

Could you also try making sure that your computer is only connected to one network (the one being used for Rokoko) and disabling your computer's connection to any other networks?

If none of that seems like it affects anything, we could proceed with more tests (I wish I could do them myself, but I don't have a v2 suit).

emullis

I'll play around with these suit-related things and get back to you.

As noted above, after the original crashes while wearing the suit, I've been doing all the tests by streaming pre-recorded mocap clips/data out of Studio. Legacy works great. No crashes. Streaming my pre-recorded mocap data (e.g., a long sequence of a dance solo and very short sequence of me manipulating the suit) out of the most recent version of Rokoko Studio results in the most recent version of Izzy crashing (either immediately or after 30 seconds or so), no matter the sequence of opening the two softwares and turning on streaming. This has happened every time (I'd guess 25 times at this point), except once.

Here's what's interesting. When I play Rokoko's stock mocap data in a scene (e.g., an avatar doing a karate kick, etc.), Izzy does not crash. This would seem to imply that it's my suit? What's odd, through, is that the long dance solo sequence was recorded last year and never caused any crashes until I upgraded Izzy and Studio.

Thoughts?

Also, I'm I the only person having this kind of issue?

emullis

@woland

I hooked up my Smartsuit Pro II and ran tests.
With Studio Open first, then Izzy, then turning on streaming = Immediate Izzy Crash.
With Izzy open first, then Studio, then turning on streaming = Crash after 5 minutes.
Again, this is with the most recent versions of Rokoko Studio and Izzy.

In terms of your suggestions:

- I use a dedicated router that goes directly into my laptop, so there is no wifi network in the setup. Suggestions about the network, therefore, don't apply.
- I unchecked and re-checked streaming in Rokoko.
- I have tried different scenes in Rokoko.

I can try changing the ports and re-assigning the suit, but these are things I never had to do before. Given that I'm using the same suit, comm setup, and scenes, it doesn't seen like these are potential fixes. The only changes to my setup have been updated Izzy to the most recent version and Rokoko Studio as well.

Is anyone else having this problem, or is it just me?

Woland

@emullis

Very puzzling.

Perhaps try installing a previous version of Isadora or Rokoko Studio?

We've had at least one person report an issue like this before, and I saw it with my v1 suit, but in both cases, the issue went away before we were able to isolate why it was happening.