Video

Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media.

was first developed for mechanical television systems, which were quickly replaced by cathode-ray tube (CRT) systems which, in turn, were replaced by flat panel displays of several types.

systems vary in display resolution, aspect ratio, refresh rate, color capabilities and other qualities. Analog and digital variants exist and can be carried on a variety of media, including radio broadcasts, magnetic tape, optical discs, computer files, and network streaming.

Is capable of higher quality and, eventually, much lower cost than earlier analog technology. After the invention of the DVD in 1997, and later the Blu-ray Disc in 2006, sales of tape and recording equipment plummeted. Advances in computer technology allow even inexpensive personal computers and smartphones to capture, store, edit, and transmit digital, further reducing the cost of production, and allowing program-makers and broadcasters to move to tapeless production.

The advent of digital broadcasting and the subsequent digital television transition is in the process of relegating analog to the status of a legacy technology in most parts of the world.

The development of high-resolution cameras with improved dynamic range and color gamuts, along with the introduction of high-dynamic-range digital intermediate data formats with improved color depth, has caused digital technology to converge with film technology.

Since 2013, the usage of digital cameras in Hollywood has surpassed use of film cameras. technology Video was first developed for mechanical television systems, which were quickly replaced by cathode-ray tube (CRT) television systems, but several new technologies for display devices have since been invented.  was originally exclusively a live technology. Charles Ginsburg led an Ampex research team developing one of the first practical tape recorders (VTR).