From Social Spaces at University of Illinois:
A set of applications to support the video annotation workflow. Our system presents an interface for researchers to define which variables coders will be coding on the interactive timeline. It supports multiple synchronized video streams and ad-hoc methods of synchronization. Additional data tracks, such as audio data or other sensors, may be displayed along the bottom of the timeline, taken from associated data files that are recorded along with research videos. These two free tools are optimized for the annotation workflow, giving coders the agility to code video accuratly and reliably while allowing researchers the flexability to have videos annotated in multiple ways so as to get at the data they need to do research.