Editing DirectShow (section)

==History==
The direct predecessor of DirectShow, [[ActiveMovie]] (codenamed Quartz), was designed to provide [[MPEG-1]] support for Windows. It was also intended as a future replacement for media processing frameworks like [[Video for Windows]] and the [[Media Control Interface]], which had never been fully ported to a 32-bit environment and did not utilize COM.<ref>{{cite web |title=DirectShow: Core Media Technology in Windows XP Empowers You to Create Custom Audio/Video Processing Components |url=https://docs.microsoft.com/en-us/archive/msdn-magazine/2002/july/directshow-core-media-technology-in-windows-xp-empowers-you-to-create-custom-audio-video-processing-components |website=docs.microsoft.com |date=23 October 2019 |access-date=31 March 2021 |language=en-us}}</ref><ref name="QuartzIntro"/>

The development team used a pre-existing modular digital-media-processor project codenamed "Clockwork" as a basis for DirectShow. Clockwork had previously been used in the Microsoft Interactive Television project.<ref>{{cite web|url=http://research.microsoft.com/~mbj/papers/mitv/tr-97-18.html|title=The Microsoft Interactive TV System: An Experience Report|author=B. Jones, Michael|work=Microsoft Research|publisher=Microsoft|date=July 1997|access-date=2007-04-02|archive-url=https://web.archive.org/web/20070516040458/http://research.microsoft.com/~mbj/papers/mitv/tr-97-18.html|archive-date=2007-05-16|url-status=dead}}</ref>

The project was initially named "ActiveMovie", and was released in May 1996, bundled with the beta version of [[Internet Explorer 3]].0.<ref>{{cite press release|url=http://www.microsoft.com/presspass/press/1996/mar96/actmovpr.mspx|title=Microsoft Announces ActiveMovie|publisher=Microsoft|date=1996-03-05|access-date=2006-12-31|url-status=dead|archive-url=https://web.archive.org/web/20110717095400/http://www.microsoft.com/presspass/press/1996/mar96/actmovpr.mspx|archive-date=2011-07-17}}</ref><ref>{{cite press release|url=http://www.microsoft.com/presspass/press/1996/may96/ie3btapr.mspx|title=Microsoft Internet Explorer 3.0 Beta Now Available|publisher=Microsoft|date=1996-05-29|access-date=2006-12-31|url-status=dead|archive-url=https://web.archive.org/web/20070707080854/http://www.microsoft.com/presspass/press/1996/may96/ie3btapr.mspx|archive-date=2007-07-07}}</ref> In March 1997, Microsoft announced that ActiveMovie would become part of the [[DirectX]] 5 suite of technologies, and around July started referring to it as DirectShow, reflecting Microsoft's efforts at the time to consolidate technologies that worked directly with hardware under a common naming scheme.<ref>{{cite press release |url=http://www.microsoft.com/presspass/press/1997/mar97/mmapipr.mspx |title=Microsoft Unveils First Unified Multimedia API Strategy |publisher=Microsoft |date=1997-03-31 |access-date=2006-12-31 |url-status=dead |archive-url=https://web.archive.org/web/20071024022546/http://www.microsoft.com/presspass/press/1997/mar97/mmapipr.mspx |archive-date=2007-10-24 }}</ref><ref>{{cite press release|url=http://www.microsoft.com/presspass/press/1997/Jul97/pronetpr3_95.mspx |title=Microsoft and Progressive Networks Collaborate on Streaming Media |publisher=Microsoft |date=1997-07-21 |access-date=2006-12-31 |url-status=dead |archive-url=https://web.archive.org/web/20061210090534/http://www.microsoft.com/presspass/press/1997/Jul97/pronetpr3_95.mspx |archive-date=2006-12-10 }}</ref><ref>{{cite web|url=http://craig.theeislers.com/2006/02/directx_then_and_now_part_1.php|title=DirectX Then and Now|author=Eisler, Craig|work=Craig's Musings|date=2006-02-20|access-date=2010-08-17|url-status=dead|archive-url=https://archive.today/20120711181236/http://craig.theeislers.com/2006/02/directx_then_and_now_part_1.php|archive-date=2012-07-11}}</ref> DirectShow became a standard component of all Windows operating systems starting with [[Windows 98]];<ref>{{cite press release |url=http://www.microsoft.com/presspass/press/1997/dec97/dshwspr.mspx |title=Microsoft Releases DirectShow SDK - Universal Playback for DVD, Digital Video and Audio, and the Internet |publisher=Microsoft |date=1997-12-10 |access-date=2010-08-17 |url-status=dead |archive-url=https://web.archive.org/web/20100212184601/http://www.microsoft.com/presspass/press/1997/dec97/dshwspr.mspx |archive-date=2010-02-12 }}</ref> however it is available on [[Windows 95]] by installing the latest available DirectX redistributable.<ref name="DShowFAQ">{{cite web|url=https://msdn.microsoft.com/en-us/library/dd375463(VS.85).aspx|title=DirectShow FAQ|work=MSDN Library|publisher=Microsoft|date=2010-07-06|access-date=2010-08-17}}</ref> In DirectX version 8.0, DirectShow became part of the core DirectX SDK along with other DirectX APIs.<ref>{{cite web|url=https://msdn.microsoft.com/en-us/library/ms867154.aspx|title=FAQs about the DirectShow and Windows Media SDKs|work=MSDN Library|publisher=Microsoft|date=December 2001|access-date=2010-08-17}}</ref>

In October 2004, DirectShow was removed from the main DirectX distribution and relocated to the DirectX Extras download.{{Citation needed|date=August 2010}} In April 2005, DirectShow was removed entirely from DirectX and moved to the Windows SDK starting with the Windows Server 2003 SP1 version of the SDK.<ref name="DShowMSDN"/> The DirectX SDK was, however, still required to build some of the DirectShow samples.<ref name="dsmustdx">{{cite web|url=https://msdn.microsoft.com/en-us/library/ms783352(VS.85).aspx|title=DirectX Samples|work=MSDN Library|publisher=Microsoft|date=2005-09-11|access-date=2005-09-11}}</ref>

Since November 2007, DirectShow APIs are part of the [[Windows SDK]]. It includes several new enhancements, codecs and filter updates such as the [[Enhanced Video Renderer]] (EVR) and DXVA 2.0 ([[DirectX Video Acceleration]]).<ref>{{cite web|url=https://msdn.microsoft.com/en-us/library/dd390976(VS.85).aspx|title=What's New in DirectShow Windows Vista|work=MSDN Library|publisher=Microsoft|date=2006-11-08|access-date=2006-11-08}}</ref>