- Helix (project)
:"This article is about the free and open-source software media project. See
helix (disambiguation) for other meanings."Helix is a project to produce software that can play audio and video media in various formats, aid in producing such media, and serve them over a network. It is intended as a largely free and open source digital media framework that runs on numerous
operating system s and processors (including mobile phones) and was started byRealNetworks which has contributed much of the code.Helix DNA Client is the multi-platform multi-format media playback engine. Helix Player is a media player that runs on
Linux , Solaris,Symbian andFreeBSD and is built on top of Helix DNA Client. Helix Producer is an application that can aid in the production of media files, and Helix DNA Server can stream media files over a network.Licenses
The code is released in binary and source code form under various licenses, notably the proprietary
RealNetworks Community Source License and the free and open source softwareRealNetworks Public Source License . Additionally, the Helix DNA Client and the Helix Player are licensed under the popular GNU General Public License (GPL) free and open source license.Use of the RDT, the default proprietary Real data transport, and of the
RealVideo andRealAudio codec s requires binary components distributed under the Helix DNA Technology Binary Research Use License.Helix DNA Client
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website = https://helix-client.helixcommunity.org/Helix DNA Client powers many digital media applications, includingRealPlayer for Windows, Mac OS and Linux (since version 10), RealPlayer Mobile, and Helix Player. It is used onNokia ,Motorola ,Samsung andSony Ericsson mobile phones. According to https://helixcommunity.org, 125 million mobile phones with the Helix client have been shipped since 2006. It is also being used in embedded devices like theInternet Tablet OS fromNokia , which is found on theNokia 770 , N800 and N810 Internet Tablets.Cingular Video is also based on the framework. Other projects that use the Helix framework include RealNetwork's Rhapsody online music service, the Banshee and Amarok music players, and MediaReady 4000.Another project that is taking advantage of the Helix DNA Client is the
One Laptop Per Child project. A group of developers from theOpen Source Lab are currently working on a media player API for the project, and will continue on using other Helix technologies to create applications for content creation and content collaboration.Helix DNA client contains support for the following media formats:
* Audio formats:Vorbis , .au
* Video formats:Theora ,AVI
* Description formats: SMIL, SDP
* Image formats:JPEG , GIF, PNG
* Protocols:RTSP , RTP,HTTP ,Multicast , RDTHelix DNA Server
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website = https://helix-server.helixcommunity.org/The Helix DNA Server, first released on 22 January, 2003, [ [http://www.realnetworks.com/company/press/releases/2003/helixdna.html Press release] ] supports streamingRealVideo ,RealAudio orMP3 to any device or application that supports theHTTP orRTSP streaming protocols. [ [http://helix-server.helixcommunity.org/ The Helix DNA™ Server ] ]See also
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RealNetworks
*RealPlayer
*Comparison of media players References
External links
* [https://helixcommunity.org/ Helix Community]
* [http://service.real.com/help/library/guides/helixuniversalserver/realsrvr.htm Helix Universal Server Administration Guide]
* [https://helixcommunity.org/beula/ Helix DNA Technology Binary Research Use License]
* [http://labs.mudynamics.com/2007/08/24/helix-dna-server-heap-corruption-vulnerability/ Advisory: Mu Dynamics discovers Helix DNA server heap corruption vulnerability
Wikimedia Foundation. 2010.