SignStream v.2, which allows display of up to 4 synchronized video files and a visual representation of the wave form of a synchronized sound file, runs on MacOS computers running System 8.0 or later and requires QuickTime version 3.0.2 or later. Although the binary database files can only be read with SignStream, data may be exported to a text file. For some data sets, these text files are being made available via the Web . A pure Java port of SignStream is currently under development at Boston University. The project has benefited from collaboration with several universities, including Dartmouth College and Gallaudet University.
Video is stored in a track as a series of time-stamped frames.
A user interested in a specific part of the video can put the desired frames on the score and use the other tracks to describe them. Although playing a video is allowed, it is not synchronized with the other tracks while playing. A demo version is available. A single license for an educational institution is DM 850.00. The intent is to create a large database of video annotated with information about gesture, speech and gaze.