Video is a technology and it was first developed for mechanical television systems.Now a days Video is originally exclusively a live technology.The first video tape recorder captured live images from television cameras in 1951.Digital video technology allowed higher quality and eventually, much lower cost than earlier analog technology.Sony began selling videocassette recorder (VCR) decksin 1971.After the invention it was developed of the DVD in 1997 and After developed Blu-ray Disc in 2006.

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