Editing VP3 (section)

===VP4===
VP4 was announced in January 2001.<ref>On2 (2001-01-09) [http://webarchive.loc.gov/all/20100108155245/http://www.on2.com/index.php?id%3D486%26news_id%3D385 On2 and Equator Enter Into a Formal Licensing Agreement], Retrieved on 2001-01-09</ref> On2 Technologies released the beta version of VP4 on May 21, 2001.<ref name="production" /><ref>On2 (2001-05-18) [http://www.on2.com/index.php?id=486&news_id=376 On2 to Debut VP4 for the Web, Part of New Website Launch] {{Webarchive|url=https://web.archive.org/web/20071203063232/http://www.on2.com/index.php?id=486&news_id=376 |date=2007-12-03 }}, Retrieved on 2009-08-16</ref> In June 2001 On2 Technologies posted the production release of VP4 on its website.<ref name="production" /> VP4 brought an improved encoder for VP3 bitstream format.{{Citation needed|date=May 2010}}
So because of keeping the bitstream format VP4 can't be seen as an individual codec.{{Citation needed|date=May 2010}}

On July 19, 2001 On2 announced an agreement with [[RealNetworks]] to license its VP4 video compression technology, for set-top boxes and other devices. On2 enabled RealPlayer as the exclusive media player for the VP4 codec and the RealSystem iQ architecture became the only streaming media platform capable of delivering the VP4 codec.<ref>On2 (2001-07-19) [http://www.on2.com/index.php?id=486&news_id=366 On2's VP4 Video Compression Technology to Exclusively Support RealNetworks' RealPlayer and RealSystem iQ], Retrieved on 2009-08-16</ref><ref>StreamingMedia.com (2001-07-19) [http://www.streamingmedia.com/article.asp?id=7700 Exclusive Deal for On2 and Real], Retrieved on 2009-08-16</ref> The first beta version of a plug-in for [[RealPlayer]] was announced in January 2002.<ref>On2 (2002-01-22) [http://www.on2.com/index.php?id=486&news_id=342 On2's VP4 for Real Now Available], Retrieved on 2009-08-16</ref>

Lately [[AOL]] licensed VP4 and created the [[Nullsoft Streaming Video]] format.{{Citation needed|reason=August 2009 I am afraid that AOL licensed VP5 and VP6, not VP4.|date=August 2009}} Now the VP4 codec is limited, but still used by AOL.{{Citation needed|reason=August 2009 I am afraid that AOL licensed VP5 and VP6, not VP4.|date=August 2009}}

Later incarnations of this codec are [[VP5]], [[VP6]], [[VP7]], [[VP8]], and [[VP9]].