Octab is a web-based annotation tool that allows precise and convenient annotations of micro events or behaviors in videos, which can be used directly with Amazon Mechanical Turk. It has been shown that crowdsourcing with OCTAB can be an effective method for obtaining high-quality micro-level behavior annotations in videos.
The annotation and training software is freely available for research. For now, please e-mail park [at] ict.usc.edu to use it. Thanks.