About track_id in output.keys()

[XihuaQiao]

Sorry to bother you. I use 'pose' as track method, and when I run the code, it will show the 3D joints in the video at the beginning, and that's where I could find several ids in these people. I wonder if these ids are the track_id in 'output.keys()' refer to demo.md? If it's not, where can I get access to these track_id? Thanks a lot!