High-resolution high-definition: Difference between revisions

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HRHD (high-resolution high-definition) (also HR, HRHDTV, or HR.HDTV) is an initialism referring to an image resolution derived from high-definition video, often seen as part of the filename of TV shows shared on the Internet. HRHD is an unofficial standard of encoding video, meaning that the video signal was ripped directly from an HDTV broadcast, then downsampled to approximately 960 × 540, and usually encoded with Xvid. While the horizontal resolution of 960 remains constant the vertical resolution can fluctuate up to 5% to provide clean cropping. It is sometimes erroneously referred to as Half-Resolution High-Definition.

Encoding for a 40–55-minute HRHD TV show should be approximately 700 MB, the size of a compact disc. It contains the original AC3 sound, which is often 5.1 channels, instead of the re-encoded stereo MP3 stream found in 350MB releases.

History

The HRHD format began in late 2003 when the TV capture group FUA began distributing what they termed "HRHDTV rips" on the private FTP sites of The Scene. The group defined what HRHDTV is in their .nfo, a small text file included with releases to give information specific to the release.

There has often been a misconception about the name. Some mistakenly think the term means half-resolution high-definition. HRHD resolution is actually ¾ height and width of 720p video. By area, the picture is 56.25% of the typical 720p HD broadcast. The HRHD dimensions are precisely half of 1080p video, but this yields only 25% of the original 1080p picture information.

References

This article about television technology is a stub. You can help Wikipedia by expanding it.

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+{{Unreferenced|article|date=July 2019}}
-'''HRHD (High Resolution High-Definition)''' (also HR, HRHDTV, or HR.HDTV) is an [[acronym|initialisation]], often seen as part of the filename of [[TV]] shows shared on the Internet.
+{{Short description|Video format}}
+'''HRHD (high-resolution high-definition)''' (also '''HR''', '''HRHDTV''', or '''HR.HDTV''') is an [[Acronym and initialism|initialism]] referring to an [[image resolution]] derived from [[high-definition video]], often seen as part of the [[filename]] of TV shows shared on the Internet. HRHD is an unofficial standard of [[codec|encoding video]], meaning that the video signal was [[ripping|ripped]] directly from an [[High-definition television|HDTV]] broadcast, then [[downsampling|downsampled]] to approximately 960 × 540, and usually encoded with [[Xvid]]. While the horizontal resolution of 960 remains constant the vertical resolution can fluctuate up to 5% to provide clean cropping. It is sometimes erroneously referred to as ''Half''-Resolution High-Definition.
+Encoding for a 40–55-minute HRHD TV show should be approximately 700 MB, the size of a [[compact disc]]. It contains the original [[Dolby Digital|AC3]] sound, which is often [[surround sound|5.1 channels]], instead of the re-encoded [[stereophonic sound|stereo]] [[MP3]] stream found in 350MB releases.
-It refers to a standard of encoding video, meaning that the video signal was ripped directly from a [[High-definition television|HDTV]] broadcast<ref name="NFO">[http://nforce.nl/index.php?switchto=nfos&menu=quicknav&item=viewnfo&id=49132 NFO from one of the very first HRHD rips]</ref>, then down-sampled to approximately 960x540, and usually encoded with [[Xvid]]. While the horizontal resolution of 960 remains constant the vertical resolution can fluctuate up to 5% to provide clean cropping.
-A HRHD encoding for a 40-55 minute TV show should be approximately 700MB. It contains the original [[AC3]] sound, which is often 5.1 channels<ref name="NFO"/>, instead of the [[encode|re-encoded]] [[MP3]] stream found in 350MB releases.
 ==History==
-The HRHD format began in late 2003 when the TV capture group FUA began distributing what they termed HRHDTV rips on the private [[FTP]] sites of [[The Scene]].  The group defined what HRHDTV is in their [[NFO]], a small text file included with releases to give information specific to the release<ref name="NFO"/>.
+The HRHD format began in late 2003 when the TV capture group FUA began distributing what they termed "HRHDTV rips" on the private [[File Transfer Protocol|FTP]] sites of [[Warez (scene)|The Scene]].  The group defined what HRHDTV is in their [[.nfo]], a small text file included with releases to give information specific to the release.
-Recently, there has been a misconception about the name.  Some mistakenly think the term means Half Resolution High Definition.  This version of the term incorrect not only because of the history, but also factually.  While Half Resolution fits if the source is 1080i, it fails if the source is 720p.
+There has often been a misconception about the name.  Some mistakenly think the term means ''half-resolution high-definition''.  HRHD resolution is actually ¾ height and width of [[720p]]  video.  By area, the picture is 56.25% of the typical 720p HD broadcast.  The HRHD dimensions are precisely half of [[1080p]] video, but this yields only 25% of the original 1080p picture information.
-==References==
-<references/>
 ==See also==
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 * [[Standard (warez)]]
-==External Links==
+==References==
+<references/>
-* [http://www.540torrents.com/about.php#whatishrhdtv Explanation of HR HDTV, comparison to HDTV]
-{{tv-stub}}
 [[Category:High-definition television]]
 [[Category:Standards]]
 [[Category:Warez]]
+{{tv-tech-stub}}