DeepLabCut is a state-of-the-art pose estimation tool, allowing researchers to annotate videos, train models, and refine their annotations within one workflow. Here you can find a couple of demos to try it out.
Does not work on Google Colab - you will have to install DeepLabCut on your own machine. See installation instructions at the bottom.
Detailed installation instructions can be found here
These demos were largely based on those found on the DeepLabCut GitHub Page. Be sure to check it out for more tutorials and detailed documentation!