If you use OpenCage in your research, please cite the following article:
Zarringhalam K, Ka M, Kook Y-H, Terranova J, Suh Y, King OD, Um M. An open system for automatic home-cage behavioral analysis and its application to male and female mouse models of Huntington's disease. Behavioural Brain Research, vol. 229, no. 1, 216-225 (2012)
For the purpose of grant applications we would like to have a sense of the extent to which this software is being used, so please contact Oliver King (king@bbri.org) to request the source code, or with questions regarding the program. Note that it may be possible to provide you with a precompiled binary verison of the OpenCage program for certain computer platforms, which would simplify the installation process but would support many fewer video formats than compiling the source code yourself with FFmpeg support. See the installation guide for further details.