VP6

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On2 VP6 True Motion (FourCC: VP60, VP61or VP62) is a proprietary video format for lossy compressed video data and associated video codec. It is an incarnation of TrueMotion , a series of video formats and associated video codec developed by On2 Technologies .

VP6 is released for personal, non-commercial use. libavcodec contains a free decoder for the format.

VP6 is the standard video format of Flash 8 and should be used as the standard video format for China's Enhanced Versatile Disc (EVD).

history

On May 12, 2003, On2 announced the release of VP6. Revised versions 6.1 and 6.2 followed later in the same year. Since October 2003 VP6 can be used free of charge for personal purposes.

In August 2005, Macromedia selected VP6 as the new standard video format for Flash 8 or the Flash Video container format (FLV).

Around the beginning of March 2006, a free decoder for the format appeared on the software development platform SourceForge (libvp62), but was soon removed there at the urging of On2 because of alleged copyright infringement. At first it remained unclear whether the code came about through (legal) reverse engineering or whether it was derived directly from possibly stolen original On2 code. After no official statement was received from On2, one was provoked by republishing the code on rarewares.org. It subsequently became clear that the code probably goes back to the publication of a Java version of the decoder published by On2 for demonstration purposes, which was decompiled, which is relatively easy to do with Java bytecode . This also explains the great similarity (sometimes literal correspondence) to their original code that On2 claims. Given the probable and possible legality and unprovability of On2's claims, the source code was kept available on Rarewares' website despite threats from On2's legal agency. An (incomplete) reference was created on the basis of this source text from the beginning of May 2006. As a result, over the next few months Aurelien Jacobs created an open source decoder for VP6 for the FFmpeg project, which has been part of the libavcodec project since September 2006 . Initially it only supported VP6.2, but towards the end of 2006 it also supported VP6.0 and 6.1. It is included in the stable version 0.5 released in March 2009.

In January 2007 the next successor version VP7 was presented; The current version is the successor named VP8 , published in 2008 , which was released from all patent claims in 2010 and made available in the source code for free use.

See also

Web links

Individual evidence

  1. ↑ Press release ( memento of April 8, 2005 in the Internet Archive ) from On2 on the publication of VP6
  2. ↑ http://wiki.multimedia.cx/?title=On2_VP6
  3. ↑ Discussion and events about the free decoder for reading in the forum thread LGPL VP6 decoder released on doom9.org (English)