General knowledge

Sunday, 27 May 2018

What is 4K resolution and 1080p, 2K, UHD, 4K, 8K

Video Resolution : 1080p, 2K, UHD, 4K, 8K, and what they all mean

1080p :-

1080p means (1920×1080 px; also known as Full HD ) is a set of HDTV high-definition video modes characterized by 1080 horizontal lines of vertical resolution the 
  • It is often marketed as full HD, to contrast 1080p with 720p resolution screens.
  • 1080p video signals are supported by ATSC standards in the United States and DVB (Digital Video Broadcasting) standards in Europe.
  • Applications of the 1080p standard include television broadcasts smartphones, Internet content such as YouTube videos and  televisions and projectors, computer monitors and digital cameras can capture still and moving images in 1080p resolution.

2K :-

  • 2K resolution is a generic term for display devices or content having horizontal resolution of approximately 2,000 pixels.
  • Digital Cinema Initiatives (DCI) defines 2K resolution standard as 2048×1080.
  • In the movie projection industry, Digital Cinema Initiatives is the dominant standard for 2K output.
  • 1080p (Full HD or FHD) has been included into the 2K resolution definition. 
  • 1920x1080 could be considered as having a horizontal resolution of approximately 2,000 pixels, most media, including web content and books on video production, cinema references and definitions, define 1080p and 2K resolutions as separate definitions and not the same.

Ultra HD :-

  • Ultra-high-definition television (also known as Ultra HD televisionUltra HDUHDTVUHD and Super Hi-Vision) today includes 4K UHD and 8K UHD
  • "Ultra High Definition", or "Ultra HD", would be used for displays that have an aspect ratio of 16:9 or wider and at least one digital input capable of carrying and presenting native video at a minimum resolution of 3840×2160 pixels.

4K :-

  • 4K resolution, also called 4K, refers to a horizontal screen display resolution in the order of 4,000 pixels. 
  • There are several different 4K resolutions in the fields of digital television and digital cinematography.
  •  In television and consumer media, 3840×2160 (4K UHD) is the dominant 4K standard. In the movie projection industry, 4096×2160 (DCI4K) is the dominant 4K standard.
  • Netflix and Amazon are the big names streaming 4K, and both services need a minimum of 15Mbps to do 4K

8K :-

  • 8K resolution, or 8K UHD, is the current highest ultra high definition television (UHDTV) resolution in digital television and digital cinematography. 
  • 8K refers to the horizontal resolution of 7,680 pixels, forming the total image dimensions of (7680×4320), otherwise known as 4320p

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