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"Qualitative analysis software for video and audio data"

Transana is software for professional researchers who want to analyze digital video or audio data. Transana lets you analyze and manage your data in very sophisticated ways. Transcribe it, identify analytically interesting clips, assign keywords to clips, arrange and rearrange clips, create complex collections of interrelated clips, explore relationships between applied keywords, and share your analysis with colleagues. The result is a new way to focus on your data, and a new way to manage large collections of video and audio files and clips.
Transana is inexpensive and Open Source. It was developed at the Wisconsin Center for Education Research, where it continues to be maintained and enhanced. It is widely used in the education research community, where video is an integral part of most researchers' methods. Researchers in many other disciplines also find it useful in their work.
Transana is cross-platform. Transana runs on Windows and Apple OS X in both single-user and multi-user versions.
for more info : http://www.transana.org/about/index.htm

Older versions are available for free (2.12 and before), but newer versions are NOT free.