I am interested in making a free (possibly open source) video capturing application, but I am having trouble finding fast screen capture code. Does anyone know how to effieciently capture frames and then string them together into a quicktime movie? Any help, comments, tips are appreciated.

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http://developer.apple.com/documentation/General/GraphicsImaging/Conceptual/General/CoreVideo/CVProg_Tasks/chapter_3_section_2.html and search Apple’s sample codes with the key word General/CVDisplayLinkRef. –zootbobbalu