Description The Berkeley Multimodal Human Action Database (MHAD) contains 11 actions performed by 7 male and 5 female subjects in the range 23-30 years of age except for one elderly subject. All the subjects performed 5 repetitions of each action, yielding about 660 action sequences which correspond to about 82 minutes of total recording time. In addition, we have recorded a T-pose for each subject which can be used for the skeleton extraction; and the background data (with and without the chair used in some of the activities). The specified set of actions comprises of the following: (1) actions with movement in both upper and lower extremities, e.g., jumping in place, jumping jacks, throwing, etc., (2) actions with high dynamics in upper extremities, e.g., waving hands, clapping hands, etc. and (3) actions with high dynamics in lower extremities, e.g., sit down, stand up. Prior to each recording, the subjects were given instructions on what action to perform; however no specific details were given on how the action should be executed (i.e., performance style or speed). The subjects have thus incorporated different styles in performing some of the actions (e.g., punching, throwing).