A VCR (videocassette recorder) is an electromechanical device for recording and playing back full-motion video visual programming on cassettes containing magnetic tape. Most videocassettes have tape measuring 1/2 inch (1.27 cm) in width. The most common application of the VCR in Security Industry is its use by security professionals for the purpose of playing and recording video content from CCTV cameras. If your having trouble selecting the right CCTV VCR for you, then please call us at (800) 572-3390 or visit the CCTVhelp.com forum for support.