What’s the contents of hand_landmarks.txt

[renyuanzhe]

In the paper, it is said that "For the last frame in each clip,3D hand pose estimation is performed using Google’s MediaPipe Hands python solution API", but the hand_landmarks.txt has more samples than the number of clips.

[simbaforrest]

@RoboticsYimingLi @ziangcao0312 can you address this by adding it to the readme?