Multi-animal model only detects one animal in DeepLabCut Live GUI

[treetcat]

Hi DeepLabCut team,

I'm using a multi-animal DeepLabCut project and the model was trained successfully on multiple animals. Offline inference with DeepLabCut detects multiple animals as expected.

However, after exporting the model and loading it into DeepLabCut Live GUI, the GUI only detects one animal, even when multiple animals are clearly visible in the frame.

I'm wondering if this is expected behavior or if I'm missing a configuration step.

Specifically:

• Does DeepLabCut Live GUI currently support multi-animal inference?
• Is there an additional setting (e.g., maximum number of animals/instances) that needs to be configured after exporting the model?
• Are there any requirements for exporting a multi-animal model that differ from a single-animal model?

Any guidance would be greatly appreciated. Thank you!

[MMathisLab]

We don't support multi animal live (see Kane et al 2020), as the idea is you can trigger an action based on one animals behavior - ie we use it to control VR worlds based on a single animals behavior.