Digital video | Sociamonials Blog

Digital video

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The primary focus of this passage, digital video, is a digital recording method that operates by employing a digital signal instead of an analog video signal. The inception of this technology took place when MOS image sensors were incorporated into digital video cameras. Since its inception, it has evolved significantly, marked by the creation of the first semiconductor image sensor, CCD, and the entertainment industry’s transition to digital imaging. Presently, digital video is extensively employed in a variety of sectors, such as entertainment, education, and research. It also finds use in diverse applications such as surveillance, storage, and monitoring vital signs in the healthcare industry. One of the defining characteristics of digital video is its capacity for effortless duplication and distribution without any loss of quality. It also provides various storage alternatives, including Blu-ray Discs, data storage devices, and internet^[1] streaming. Its technical elements encompass bandwidth usage for live videos and storage usage for recorded videos, with compression significantly diminishing data usage. There are also distinct video formats for consumer and professional utilization. The highest resolution of digital video exhibited so far is 132.7 megapixels.

Terms definitions

1. ↑ internet. The Internet, a global network of interconnected computer systems, utilizes standardized communication protocols, predominantly TCP/IP, to connect devices across the globe. The term 'Internet' has its roots in the 1849 term 'internetted' and was later adopted by the US War Department in 1945. The inception of the Internet can be traced back to the 1960s when computer scientists developed time-sharing systems, which eventually led to the creation of ARPANET in 1969. The Internet operates autonomously, without any central control, and the Internet Corporation for Assigned Names and Numbers (ICANN) manages its primary name spaces. It has revolutionized traditional communication methods and has seen an exponential growth, with the number of internet users growing by 20% to 50% every year. In 2019, more than half of the global population was using the Internet. The Internet protocol suite, comprising TCP/IP and four conceptual layers, directs internet packets to their intended destinations. Fundamental services such as email and Internet telephony function on the Internet. The World Wide Web, an extensive network of interconnected documents, serves as a crucial element of the Internet.

Digital video (Wikipedia)

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.

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