Digital electronic representation of moving visual images
This article is about digital techniques applied to video. For the standard format for storing digital video, see DV (video format). For other uses, see Digital video (disambiguation).
Digital video is an electronic representation of moving visual images (video) in the form of encoded digital data. This is in contrast to analog video, which represents moving visual images in the form of analog signals. Digital video comprises a series of digital images displayed in rapid succession, usually at 24, 30, or 60 frames per second. Digital video has many advantages such as easy copying, multicasting, sharing and storage.
Digital video was first introduced commercially in 1986 with the Sony D1 format, which recorded an uncompressed standard-definition component video signal in digital form. In addition to uncompressed formats, popular compressed digital video formats today include MPEG-2, H.264 and AV1. Modern interconnect standards used for playback of digital video include HDMI, DisplayPort, Digital Visual Interface (DVI) and serial digital interface (SDI).
Digital video can be copied and reproduced with no degradation in quality. In contrast, when analog sources are copied, they experience generation loss. Digital video can be stored on digital media such as Blu-ray Disc, on computer data storage, or streamed over the Internet to end users who watch content on a personal computer or mobile device screen or a digital smart TV. Today, digital video content such as TV shows and movies also includes a digital audio soundtrack.
Digitalvideo is an electronic representation of moving visual images (video) in the form of encoded digital data. This is in contrast to analog video...
several types. Video systems vary in display resolution, aspect ratio, refresh rate, color capabilities, and other qualities. Analog and digital variants exist...
A digitalvideo recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or...
The DVD (common abbreviation for DigitalVideo Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed...
Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect...
In the video game industry, digital distribution is the process of delivering video game content as digital information, without the exchange or purchase...
created at any point, from any copy of the video. Video fingerprinting should not be confused with digital watermarking, which relies on inserting identifying...
The transition to digital television gave a boost to digitalvideo cameras. By the early 21st century, most video cameras were digital cameras. With the...
DigitalVideo Interactive (DVI) was the first multimedia desktop video standard for IBM-compatible personal computers. It enabled full-screen, full motion...
memory and SD cards. More recent devices capable of recording video are camera phones and digital cameras primarily intended for still pictures, whereas dedicated...
Serial digital interface (SDI) is a family of digitalvideo interfaces first standardized by SMPTE (The Society of Motion Picture and Television Engineers)...
the entertainment industry slowly began transitioning to digital imaging and digitalvideo over the next two decades. The CCD was followed by the CMOS...
Digitalvideo effects (DVEs) are visual effects that provide comprehensive live video image manipulation, in the same form as optical printer effects...
Serial DigitalVideo Out (SDVO) is a proprietary Intel technology introduced with their 9xx-series of motherboard chipsets. SDVO makes it possible to...
Concurrently, Digital Equipment Corporation (DEC) was developing a scalable video server configured from small-to-large for a range of video streams. Bell...
DIVX (DigitalVideo Express) is a discontinued digitalvideo format. Created in part by Circuit City, it was an unsuccessful attempt to create an alternative...
DigitalVideo Broadcasting (DVB) is a set of international open standards for digital television. DVB standards are maintained by the DVB Project, an...
different parts of the world; below are the more widely used standards: DigitalVideo Broadcasting (DVB) uses coded orthogonal frequency-division multiplexing...
fixed-grid display is that, for multi-format video inputs, all displays need a "scaling engine" (a digitalvideo processor that includes a memory array) to...
TiVo digitalvideo recorders encompass a number of digitalvideo recorder (DVR) models that TiVo Corporation designed. Features may vary, but a common...
Amazon Prime Video, or simply Prime Video, is an American subscription video on-demand over-the-top streaming and rental service of Amazon offered both...
Video CD (abbreviated as VCD, and also known as Compact Disc DigitalVideo) is a home video format and the first format for distributing films on standard...
distributing digitalvideo via a cable. Switched video sends the digitalvideo more efficiently freeing bandwidth. The scheme applies to digitalvideo distribution...