X video extension
The X video extension, often abbreviated as XVideo or Xv, is a video output mechanism for the X Window System. The protocol was designed by David Carver; the specification for version 2 of the protocol was written in July 1991. It is mainly used today to resize video content in the video controller hardware in order to enlarge a given video or to watch it in full screen mode. Without XVideo, X would have to do this scaling on the main CPU. That requires a considerable amount of processing power, which could slow down or degrade the video stream; video controllers are specifically designed for this kind of computation, so can do it much more cheaply. Similarly, the X video extension can have the video controller perform color space conversions, and change the contrast, brightness, and hue of a displayed video stream.
In order for this to work, three things have to come together:
- The video controller has to provide the required functions.
- The device driver software for the video controller and the X server program have to implement the XVideo interface.
- The video playback software has to make use of this interface.
Most modern video controllers provide the functions required for XVideo; this feature is known as hardware scaling and YUV acceleration or sometimes as 2D hardware acceleration. The XFree86 X server has implemented XVideo since version 4.0.2. To check whether a given X server supports XVideo, one can use the utility xdpyinfo. To check whether the video controller provides the required functions and whether the X device driver implements XVideo for any of them, one can use the xvinfo program.

This is an excerpt from the article X video extension from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article X video extension at en.wikipedia.org was accessed 42,629 times in the last 30 days. (as of: 06/08/2013)
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X video extension - Wikipedia, the free encyclopedia
The X video extension, often abbreviated as XVideo or Xv, is a video output mechanism for the X Window System. The protocol was designed by David Carver; ...
en.wikipedia.org/wiki/X_video_extension
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The XFree86 X Video Extension (Xv) Device Dependent Layer
XFree86 offers the X video extension which allows clients to treat video as any another primitive and ``Put'' video into drawables. By default, the extension ...
www.xfree86.org/current/DESIGN16.html
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X Video Extension Protocol Description Version 2 - X.Org
X video extension Protocol Description Version 2 25-JUL-91 David Carver Digital Equipment Corporation Workstation Engineering/Project Athena ...
www.x.org/releases/X11R7.5/doc/videoproto/xv-protocol-v2.txt
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Translation of X video extension in English - Babylon
Translation of X video extension in English. Translate X video extension in English online and download now our free translator to use any time at no charge .
translation.babylon.com/english/X%20video%20extension/
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X video extension | Facebook
X video extension. 162 likes · 1 talking ... Wikipedia. Content from the Wikipedia article X video extension (contributors) licensed under CC-BY-SA. Freebase ...
www.facebook.com/pages/X-video-extension/113398375375802?nr
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xv(3): X Window System video extension - Linux man page
The Xv protocol version 2.2 and later is extended to support client images in alternate colorspaces (XvImages). Xv adaptors which are capable of displaying ...
linux.die.net/man/3/xv
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X-Video Extension: no adaptors present - LinuxQuestions.org
I am trying to get X-Video extensions enabled. Code: #xvinfo X-Video Extension version 2.2 screen #0 no adaptors present Code: # xdpyinfo ...
www.linuxquestions.org/questions/fedora-35/x-video-extension-no-adaptors-present-275550/
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Install X video extension "Xv" | Junjun's Admin Notes
Install X video extension "Xv". Submitted by Junjun Mao on Sat, 01/30/2010 - 08: 59. Xv is a commandline x video program written in 90's. Yes, in 90's, but still I ...
pka.engr.ccny.cuny.edu/~jmao/node/23
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Xf86-video-v4l - LinuxTVWiki
... which is required to activate Xvideo support (as well as other extensions too)... You should be ...
linuxtv.org/wiki/index.php/Xf86-video-v4l
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xvinfo X-Video Extension version 2.2 screen #0 xvinfo help ...
xvinfo X-Video Extension version 2.2 screen #0 xvinfo help Using Fedora.
forums.fedoraforum.org/showthread.php?t=121853
Search results for "X video extension"
Google: approx. 106.000.000
X video extension in science
Extension on Video - Iowa State University
Iowa State University Extension and Outreach at the Iowa State Fair. September 9, 2011 ... Region 13 video - CIRAS has helped Harvest ... August 26, 2011 ...
NationMaster - Encyclopedia: X video extension
The X video extension, often abbreviated as XVideo or Xv, is a video output ... Similarly, the X video extension has the graphics card perform color space ...
Kaltura Video Package for Moodle 2.x – Demo Site
Kaltura Video Package for Moodle 2.x allows Teachers and Admins to: Easily add video content to course pages, wikis, ... Welcome to Imaginary University!
Debian -- Details of package libxvbaw-dev in squeeze-backports
AMD XvBA (X-Video Bitstream Acceleration) development files. ... is an arbitrary extension of the X video extension (Xv) for the X Window System on Linux ... This service is sponsored by University of Helsinki - Department of Computer Science.
Online Learning | Harvard University
Harvard Extension School ... NASA's Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia in July of ... The Harvard Life Sciences Outreach Program features video of numerous public lectures on topics ...
Colorado State University Extension Video Tutorials
Converting Documents to PDF (5:17). Publishing PDFs to the Web (3:49). Creating Bookmarks (4:03). Creating Named Destinations ...
Forestry & Natural Resources : Extension : Clemson University ...
The eight-segment video series developed by the Clemson University Extension Service, walks landowners through how to decide if a conservation easement is ...
PhotoShop for Video Tips and Tricks - Video University
Sep 4, 2011 ... D1 (another video format a.k.a. CCIR-601 or ITU-R 601 ) is a non-square pixel aspect ratio. D1 has a screen resolution of either 720 x 486 ...
CornellCast - Cornell University
CornellCast brings you video and audio recordings of compelling lectures, ... Cornell University Veterinary Specialists honor "Courageous Companions" ...
Books on the term X video extension
Articles on X Window Extensions, Including: Glx, X Video ...
Articles on X Window Extensions, Including: Glx, X Video ...
Hephaestus Books, 2011
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
Xgl: X Window System, OpenGL, Glitz, X Video Extension, AIGLX, ...
Xgl: X Window System, OpenGL, Glitz, X Video Extension, AIGLX, ...
Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken, 2010
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.
AUUGN - Nov 2001
AUUGN - Nov 2001
The XVideo extension is something you might want to try and use and the Xine FAQ tells you how to enable that support on your system, in general, and in particular (for some types of video cards, such as the one that I have, a savage4~ based ...
Linux Multimedia Hacks: Tips & Tools for Taming Images, Audio, and ...
Linux Multimedia Hacks: Tips & Tools for Taming Images, Audio, and ...
Kyle Rankin, 2009
To test whether your card has support, use the xvinfo command. It should create a lot of output if your card is supported: $ xvinfo X-Video Extension version 2.2 screen #0 Adaptor #0: "Intel(R) 830M/845G/852GM/855GM/865G Video Overlay" ...
The Jog of X: An Overview of the X Windows System
The Jog of X: An Overview of the X Windows System
N. Mansfield, 1993
Other common extensions are: Input extension: allows the use of additional input devices beyond the pointer and keyboard devices handled by standard X. Video extension to X (VEX): allows windows containing live video to be used as part of ...
Development of Google searches


Blog posts on the term
X video extension
Weston on Raspberry Pi | Daniel Stone
fooishbar.org/tell-me-about/wayland-on-raspberry-pi/
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Hi I have installed Gnome Desktop in centos 6.But when i m trying to run then i m getting following error Code: startx xauth: creating new authority
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Použitie X video extension pod Qt
www.abclinuxu.cz/blog/mirecove_dristy/2012/12/pouzitie-x-video-extension-pod-qt-2
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pc-mac-compatibility-issues.blogspot.com/2013/05/Transcode-Canon-EOS-550D-T2i-video-to-FCP.html
Brice Goglin's Blog - Debian X.org notes - Radeon Textured Xvideo in experimental, r128 and mach64 split out
bgoglin.livejournal.com/15162.html
[Solved] Xorg crash - The FreeBSD Forums
[Solved] Xorg crash X.Org
forums.freebsd.org/showthread.php?t=40017
Changing The Default Screenshot Format In OS X [Video How-To] | Cult of Mac
Have you ever wanted to change the default screenshot format in Mac OS X? The default PNG files can end up being huge, especially with higher resolutio
www.cultofmac.com/112491/changing-the-default-screenshot-format-in-os-x-video-how-to/
HTC One X video format
www.aovsoft.com/guide/htc-one-x-video-format/
tiplicks!: check x-video extension in XFree86 install - 'nix, shell, perl, php, mysql and mac os x tips and tricks
xvinfo.
www.tiplicks.com/2003/11/check-x-video-extension-in-xfree86.html
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