Processing amplifier: Difference between revisions

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'''Proc'''essing '''amp'''lifier, commonly called '''ProcAmp''', is used to alter, change or clean [[video]] or [[Sound|audio]] signal components or parameters in [[Real-time computing|realtime]].<ref>[http://www.kramerelectronics.com/glossary.asp?frm_term=Processing%20Amplifier%20(procamp) Kramer Electronics - Audio/Video Glossary - Processing Amplifier (procamp)]</ref>

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==Form factor==

'''Pro'''cessing '''amp'''lifier, commonly called '''Proc Amp''', is used to clean [[video]] signal components in [[real time]]. Proc Amps can be used for processing [[standard definition]] 525/30 ([[NTSC]]) 625/25 ([[Pal]]) or [[high definition]] video signals <ref>[http://www.videouniversity.com/engineer.htm VideoUniversity.com - Engineering Primer]</ref>. Proc Amps can process video signals ranging from [[Analog television|analog]] [[Composite video|composite]] to [[Serial Digital Interface|SDI]] video signals. [[Broadcast]] professionals prefer to use [[hardware]] [[rack]] mountable proc amps that helps them make video [[broadcast safe]] by correcting video inconsistencies. However [[software]] proc amps are also available, that are embedded in [[Media player (application software)|media players]] like [[VLC]], [[encoders]] or [[decoders]] like [[ffdshow]] that process video, either on the [[Central processing unit|CPU]] or [[Graphics processing unit|GPU]].

[[Broadcast]] professionals prefer to use [[computer hardware|hardware]] [[rack-mounted|rack mountable]] ProcAmps that helps them make video [[broadcast safe]] by correcting video inconsistencies. They may also be chip-based, as part of other larger multi-purpose devices in professional environments.

'''Common Proc Amp Controls''':

[[Software]] ProcAmps are also available as [[Source code|code]] embedded in [[Media player (application software)|media players]] like [[Windows Media Player]], [[VLC media player|VLC]], [[KMPlayer]], or in [[codec]]s like [[ffdshow]]. Software ProcAmps can process media either on the [[Central processing unit|CPU]] or [[Graphics processing unit|GPU]].<ref>[http://msdn.microsoft.com/en-us/library/ff569188.aspx Microsoft MSDN - Windows Driver Kit: Display Devices - ProcAmp Control Processing]</ref>

==Video ProcAmp==

[[File:WMP PROCAMP.png|thumb|A Software Video ProcAmp.]]

Video ProcAmps can be used for processing [[standard-definition]] 525/30 ([[NTSC]]) 625/25 ([[PAL]]) or [[high-definition video]] signals.<ref>[http://www.videouniversity.com/engineer.htm VideoUniversity.com - Engineering Primer] {{webarchive|url=https://web.archive.org/web/20160303190049/http://www.videouniversity.com/engineer.htm |date=2016-03-03 }}</ref> ProcAmps can process video signals ranging from [[Analog television|analog]] [[Composite video|composite]] to [[Serial digital interface|SDI]] video signals.

'''Common Proc AmpProcAmp Controls''':

* [[Brightness]] ([[Luminance]])

* [[contrast (vision)|Contrast]] ([[Gain (electronics)|Gain]])

* [[Saturation (color theory)|Saturation]] ([[Amplitude]])

* [[Hue]] ([[Phase (waves)|Phase]])

'''Common Proc AmpProcAmp features''':

* Regenerate sync and color burst

* Adjust [[sync]] [[amplitude]]

* Boost low light level video

* Reduce video [[wash out]]

* [[Chrominance|Chroma]] clipping

== See also ==

{{Portal|Television|Television icon.png}}

* [[Video processing]]

* [[Broadcast Safe-safe]]

== External links ==

* [https://web.archive.org/web/20101205071827/http://www.ee.surrey.ac.uk/Contrib/WorldTV/broadcast.html More information about TV standards]

== References ==

{{reflistReflist|2}}

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[[Category:electricalBroadcast engineering]]

[[Category:broadcast engineering]]

[[Category:Video formats]]

[[Category:Television technology]]

[[Category:ITU-R recommendations]]